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# on average a person visiting magic kingdom experiences attractions during a one day visit an engineering summer intern suggests that

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first 2 weeks. 50 people who joined the programme are sampled, their weight loss is 9 pounds with a standard deviation of 2.8 pounds. Can we conclude at the .05 level that a person joining the programme will lose less than 10 pounds? (2) The following is a random sample of 90-day futures prices in dollars for 1 troy oz. of silver from The Wall Street Journal issues in May and June of 1997: 4.74, 4.77, 4.87, 4.91, 4.83, 4.72, 4.92, 4.86, 4.97, 4.71, 4.90, 4.93, 4.75, 4.88, 4.79, 4.83, 4.89. Required: a. Calculate the mean b. Median c. Standard deviation of the 90-day future price of silver data (3) A mining company needs to estimate the average amount of copper ore per ton mined. A random sample of 50 tons gives a sample mean of 146,75 pounds. The population standard deviation is assumed to be 35.2 pounds. Required: a. Give a 95% confidence interval for the average amount of copper in the population of tons mined. b. Give a 90% confidence interval for the average amount of coper per ton c. Give a 99% confidence interval for the average amount of coper per ton (4) An e-commerce Website gets 2,385 visitors on a particular day. Among these, 1790 visitors explore the products by looking at more pages at the site. Among these 1790 visitors who explore the products, 387 make a purchase. Required: a. If a visitor chosen at random from all those who visited the site, what is the probability that the visitor explored the products b. If a visitor is chosen at random from all those who visited the site, what is the probability that the visitor made a purchase. c. If a visitor is chosen at random from all those who explored the products, what is the probability that the visitor made a purchase. d. Which of the preceding three probabilities is relevant to the design of the home page that leads to product page.
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ly buy stock in companies that are ranked in the 80thpercentile or above in terms of dividends paid in the previous year. You are looking at a company that ranked 5 of 70 companies that paid dividends in 2019. a. Will this company qualify for your portfolio? b. If you had the data on the total dividends paid by each of the 70 companies, which measure of average would be the most meaningful –mean, median, midrange, or mode? Explain
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eight should be based on the count of sales for the previous period, the actual period and the next period. In the excel you can see the housing data: period(month) sum of prices(K) sum of the asses value(T) K/T value (sum of prices/sum of the asses value) The answer i'm looking for is that for May 2021 the price development in percentage should be 9.5% compared to three month back. To calculate the price development you just divide the K/T value, for example: period 1 K/T value = 1.4 period 4 K/T value = 1.9 Price development = (1.9/1.4)-1 = 35.7% increase. So i want to see 9.5% increase on May 2021 compared to 3 months earlier.
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lives. Suppose you are in class of 52 students. A) what is the probability that over 13 students experience stress B) if 23 students in the class said they felt stress in their daily lives would you be surprised Suppose the average ACT score for students taking the test in Illinois is in 2003 was 21.8 with a standard deviation of 3.85. What is the probability that 32 randomly selected students from that state average under 23 on the ACT that year?
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average rate of 1.1% since then, how many years later would the population arrive at 102.000 people? Give your answer as a number only, to the nearest tenths Question 3 In a bag containing 5 red, 2 blue, 8 clear, and 1 purple marble, what is the probability of picking a blue marble, then without replacement, choosing a red marble on the second pick? (Leave in simplified fraction form.] Question 11 Poaching is causing a population of elephants to decline by 6% per year. Determine how many elephants remain in 76 years if there are 13,365 elephants today. Round to the nearest whole number.
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perfectly elastic collision with a block of mass M at rest. After the collision, the 9.00 kg block recoils with a speed of 0.400 m/s. In the diagram below, the blocks remain in contact for 0.18 seconds. Find the magnitude of the average force ( in Newtons) exerted on the 9.00 -kg block, while the two blocks are in contact.
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ower and accelerates toward the ground. The gravitational field strength on the planet housing Dump Tower is 7.46 N/kg. You will start tracking the object when it has fallen 13 stories and you will stop tracking it when it has fallen 60 stories. Each story of this tower is 3.21 meters tall. How many milliseconds will you be tracking your object and what will be its average speed during the time you were tracking it?
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics