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Which is the independent and dependent variable out of months and jewelry

 
 

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1.State whether the following statements are true or false, and provide a brief explanation i. For a set of observations x1, x2,...,xn, ...

set of observations x1, x2,...,xn, with mean ¯x, then: Xn i=1 (xi x¯) > 0. ii. For two independent events A and B such that P(A) > 0 and P(B) > 0, then: P(A [ B) < P(A) + P(B). iii. For a random variable X, E(X2) can be less than (E(X))2. iv. Rejecting a true null hypothesis is known as the power of a test. v. A 4-by-2 contingency table which results in a 2 test statistic value of 6.724 is statistically significant at the 5% significance level.
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2.I am trying to interpret logistical regression output in SPSS. The model has excellent discriminatory predictive value and correctly classifies ...

y predictive value and correctly classifies 98% of overall cases. However, when I am looking at the "Variables in the Equation" table to see which variable is significant in predicting the model, it says that none of the variables are signficant, and gives me very strange odd ratios of each independent variable. I need help in understanding this.
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3.Can domestic dogs understand human body cues such as leaning? The experimenter leaned toward one of two objects and recorded ...

two objects and recorded whether or not the dog being tested correctly chose the object indicated. A four-year-old male beagle named Augie participated in this study. He chose the correct object 42 out of 70 times when the experimenter leaned towards the correct object. (a) (2 points) Let the parameter of interest, π, represent the probability that the long-run probability that Augie chooses correctly. Researches are interested to see if Augie understands human body cues (better than gussing). Fill in the blanks for the null and alternative hypotheses. H0 : Ha : (b) (6 points) Based on the above context, conduct a test of significance to determine the p-value to investigate if domestic dogs understand human body cues. What conclusion will you draw with significance level of 10%? (If you use an applet, please specify which applet you use, and the inputs.) (c) (5 points) Based on the above context, conduct a test of significance to determine the p-value to investigate if domestic dogs understand human body cues. What conclusion will you draw with significance level of 5%? (If you use an applet, please specify which applet you use, and the inputs.) (d) (2 points) Are your conclusions from part (b) and (c) the same? If they are different, please provide an explanation. (e) (5 points) Shown below is a dotplot from a simulation of 100 sample proportions under the assump- tion that the long-run probability that Augie chooses correct is 0.50. Based on this dotplot, would a 90% confidence interval for π contain the value 0.5? Explain your answer. (f) (4 points) Compute the standard error of the sample proportion of times that Augie chose the object correctly. 1 (g) (5 points) (h) (3 points) question? (i) (4 points) (j) (4 points) A. B. C. Construct an approximate 95% confidence interval for π using the 2SD method. What is the margin of error of the confidence interval that you found in the previous How would you interpret the confidence interval that you found in part (g)? Which of the following is a correct interpretation of the 95% confidence level? If Augie repeats this process many times, then about 95% of the intervals produced will capture the true proportion of times of choosing the correct objective. About 95% times Augie chooses the correct objective. If Augie repeats this process and constructs 20 intervals from separate independent sam- ples, we can expect about 19 of those intervals to contain the true proportion Augie chooses the correct objective. (k) (4 points) object 21 out of 35 times. Conjecture how, if at all, the center and the width of a 99% confidence interval would change with these data, compared to the original 2SD 95% confidence interval. The center of the confidence interval would . The width of the confidence interval would . (l) (4 points) Suppose that we repeated the same study with Augie, and this time he chose the correct object 17 out of 35 times, and we also change the confidence level from 95% to 99%. Conjecture how, if at all, the center and the width of a 99% confidence interval would change with these data, compared to the original 2SD 95% confidence interval. Suppose that we repeated the same study with Augie, and this time he chose the correct The center of the confidence interval would The width of the confidence interval would . .
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4.Think about it Rewrite each expression as an addition expression. -22 – (-34) ...

2. 24 – 15 – (-31) -22+34 24+15+-31 Partner Practice: Rewrite each expression as an addition expression. Subtraction Expression Addition Expression 23 - 43 23+(-43) 19 - 68 19+(-68) -14 - 43 -14+(-43) -1 - 8 -1+(-8) 45 - (-14) 45+14 -23 - (-65) -23+65 Evaluate Expression: -23 - 15 -23+(-15) -38 12 - 33 12+(-33) -21 14 – 23 + (-9) 14+-23+(-9) -9+(-9) Melanie has $65 in her account. She spends $12 on a book and $40 on a bag. Her sister asks her “are you going to have enough money to contribute $15 towards mom’s birthday gift?” Melanie replies- “no problem!” Understand: Plan: Estimate/Predict: Solve: Answer: Melanie _________________ have enough money to contribute to her mom’s birthday gift. Think About it Evaluate each expression using the addition rules we have developed. 6 + (-10) -4 -11 + 19 8 -6 + (- 7) -13 -26 Independent Practice: Evaluate Expression: -33 – (-44) 11 27 – 48 27+(-48) -16 – 22 -16+(-22) Which equations below are not true statements? Select all that apply. Explain your selection. 71 – (-19) = 90 71 – 19 = 52 -71 – 19 = -52 -71 + 19 = -52 -71 – (-19) = -90 A submarine is at a depth of 12 meters below sea level. The submarine then descends 79 meters. What is the depth of the submarine now? (*descends means moving down) Jennah was evaluating the expression -7 – 83 +14. Here is her work: -7 + 83 + 14 75 + 14 89 Do you agree or disagree with her answer? Explain your answer using complete sentences. The Titans and the Broncos played football last week. The table below shows each team’s first five plays of the game. Play Titans Broncos 1 Loss of 15 yards Gain of 25 yards 2 Gain of 24 yards Gain of 19 yards 3 Loss of 12 yards Loss of 11 yards 4 Gain of 38 yards Loss of 17 yards 5 Loss of 21 yards Loss of 14 yards I) Which team had gained more yards after the fifth play? II) How many more yards did they gain?
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5.Think About it Evaluate each expression using the addition rules we have developed. 6 + (-10) -4 -11 + 19 8 ...

-4 -11 + 19 8 -6 + (- 7) -13 -26 Rewrite each expression as an addition expression. -22 – (-34) 2. 24 – 15 – (-31) -22+34 24+15+-31 Partner Practice: Rewrite each expression as an addition expression. Subtraction Expression Addition Expression 23 - 43 23+(-43) 19 - 68 19+(-68) -14 - 43 -14+(-43) -1 - 8 -1+(-8) 45 - (-14) 45+14 -23 - (-65) -23+65 Evaluate Expression: -23 - 15 -23+(-15) -38 12 - 33 12+(-33) -21 14 – 23 + (-9) 14+-23+(-9) -9+(-9) Melanie has $65 in her account. She spends $12 on a book and $40 on a bag. Her sister asks her “are you going to have enough money to contribute $15 towards mom’s birthday gift?” Melanie replies- “no problem!” Understand: Plan: Estimate/Predict: Solve: Answer: Melanie _________________ have enough money to contribute to her mom’s birthday gift. Independent Practice: Evaluate Expression: -33 – (-44) 11 27 – 48 27+(-48) -16 – 22 -16+(-22) Which equations below are not true statements? Select all that apply. Explain your selection. 71 – (-19) = 90 71 – 19 = 52 -71 – 19 = -52 -71 + 19 = -52 -71 – (-19) = -90 A submarine is at a depth of 12 meters below sea level. The submarine then descends 79 meters. What is the depth of the submarine now? (*descends means moving down) Jennah was evaluating the expression -7 – 83 +14. Here is her work: -7 + 83 + 14 75 + 14 89 Do you agree or disagree with her answer? Explain your answer using complete sentences. The Titans and the Broncos played football last week. The table below shows each team’s first five plays of the game. Play Titans Broncos 1 Loss of 15 yards Gain of 25 yards 2 Gain of 24 yards Gain of 19 yards 3 Loss of 12 yards Loss of 11 yards 4 Gain of 38 yards Loss of 17 yards 5 Loss of 21 yards Loss of 14 yards I) Which team had gained more yards after the fifth play? II) How many more yards did they gain?
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6.Think About it Evaluate each expression using the addition rules we have developed. 6 + (-10) -10-10 -11 + 19 -8 ...

-10-10 -11 + 19 -8 -6 + (- 7) -13 Rewrite each expression as an addition expression. -22 – (-34) 2. 24 – 15 – (-31) -22+34 24+15+-31 Partner Practice: Rewrite each expression as an addition expression. Subtraction Expression Addition Expression 23 - 43 23+(-43) 19 - 68 19+(-68) -14 - 43 -14+(-43) -1 - 8 -1+(-8) 45 - (-14) 45+14 -23 - (-65) -23+65 Evaluate Expression: -23 - 15 -23+(-15) -38 12 - 33 12+(-33) -21 14 – 23 + (-9) 14+-23+(-9) -9+(-9) Melanie has $65 in her account. She spends $12 on a book and $40 on a bag. Her sister asks her “are you going to have enough money to contribute $15 towards mom’s birthday gift?” Melanie replies- “no problem!” Understand: Plan: Estimate/Predict: Solve: Answer: Melanie _________________ have enough money to contribute to her mom’s birthday gift. Independent Practice: Evaluate Expression: -33 – (-44) -33+44 27 – 48 27+(-48) -16 – 22 -16+(-22) Which equations below are not true statements? Select all that apply. Explain your selection. 71 – (-19) = 90 71 – 19 = 52 -71 – 19 = -52 -71 + 19 = -52 -71 – (-19) = -90 A submarine is at a depth of 12 meters below sea level. The submarine then descends 79 meters. What is the depth of the submarine now? (*descends means moving down) Jennah was evaluating the expression -7 – 83 +14. Here is her work: -7 + 83 + 14 75 + 14 89 Do you agree or disagree with her answer? Explain your answer using complete sentences. The Titans and the Broncos played football last week. The table below shows each team’s first five plays of the game. Play Titans Broncos 1 Loss of 15 yards Gain of 25 yards 2 Gain of 24 yards Gain of 19 yards 3 Loss of 12 yards Loss of 11 yards 4 Gain of 38 yards Loss of 17 yards 5 Loss of 21 yards Loss of 14 yards I) Which team had gained more yards after the fifth play? II) How many more yards did they gain?
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7.Evaluate each expression using the addition rules we have developed. 6 + (-10) -10-10 -11 + 19 -8 -6 + (- 7) -13 ...

-8 -6 + (- 7) -13 Make tweaks, leave comments, and share with others to edit at the same time. NO THANKSUSE THE APP Austin Cassista - Reteach Lesson 7 & 8 Think About it Evaluate each expression using the addition rules we have developed. 6 + (-10) -10-10 -11 + 19 -8 -6 + (- 7) -13 Rewrite each expression as an addition expression. -22 – (-34) 2. 24 – 15 – (-31) -22+34 24+15+-31 Partner Practice: Rewrite each expression as an addition expression. Subtraction Expression Addition Expression 23 - 43 23+(-43) 19 - 68 19+(-68) -14 - 43 -14+(-43) -1 - 8 -1+(-8) 45 - (-14) 45+14 -23 - (-65) -23+65 Evaluate Expression: -23 - 15 -23+(-15) -38 12 - 33 12+(-33) -21 14 – 23 + (-9) 14+-23+(-9) -9+(-9) Melanie has $65 in her account. She spends $12 on a book and $40 on a bag. Her sister asks her “are you going to have enough money to contribute $15 towards mom’s birthday gift?” Melanie replies- “no problem!” Understand: Plan: Answer: Melanie _________________ have enough money to contribute to her mom’s birthday gift. Independent Practice: Evaluate Expression: -33 – (-44) -33+44 27 – 48 27+(-48) -16 – 22 -16+(-22) Which equations below are not true statements? Select all that apply. Explain your selection. 71 – (-19) = 90 71 – 19 = 52 -71 – 19 = -52 -71 + 19 = -52 -71 – (-19) = -90 A submarine is at a depth of 12 meters below sea level. The submarine then descends 79 meters. What is the depth of the submarine now? (*descends means moving down) Jennah was evaluating the expression -7 – 83 +14. Here is her work: -7 + 83 + 14 75 + 14 89 Do you agree or disagree with her answer? Explain your answer using complete sentences. The Titans and the Broncos played football last week. The table below shows each team’s first five plays of the game. Play Titans Broncos 1 Loss of 15 yards Gain of 25 yards 2 Gain of 24 yards Gain of 19 yards 3 Loss of 12 yards Loss of 11 yards 4 Gain of 38 yards Loss of 17 yards 5 Loss of 21 yards Loss of 14 yards I) Which team had gained more yards after the fifth play? How many more yards did they gain?
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8.Problem 4 (20 points). Consider the Newmarket 5K dataset. A dataset with certain rows deleted (where there was no Age ...

there was no Age and/or Sex entered) has been created. It is called Newmarket_Cleaned.csv. Data file: Newmarket_Cleaned.csv (Links to an external site.) . Direct HTTP link: https://unh.box.com/shared/static/p8x4xlbean3rlslmfskfu74fe89yjui8.csv Please use it for this problem. Consider the “Model 4” developed in class, which contained Age, Age^2, and Sex as independent variables. First re-create this model with the cleaned dataset (you will need to create the Age^2 column; you can verify your model summary against the one from class), and then proceed with this problem. Make the necessary changes to the model to incorporate Year as a categorical explanatory variable (you may need to change how R interprets the variable, before running this model). Does the year of the race seem to be related to mean finishing time, after taking into account the other variables in Model 4? Use the 0.05 significance level. Explain your work/logic, and key output to support your answer. Using the updated model, after accounting for age and sex, what is the expected difference in finishing times for runners from 2008 versus runners from 2004? Using the updated model, after accounting for age and sex, what is the expected difference in finishing times for runners from 2014 versus 2011? In the above, the directions are to treat Year as a categorical variable. Explain how the regression model would be different if it instead were treated as a numeric variable. What are the assumptions being made about the effect of Year in the two different approaches?
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics