e difference between reported height and actual height was calculated.
You're testing the claim that the mean difference is greater than 0.6.
From the sample, the mean difference was 0.7, with a standard deviation of 0.74.
Calculate the test statistic, rounded to two decimal places
formation: x commuters rode neither trains nor buses, y rode trains, and z rode only trains. How many people rode the following?
(a) trains and buses
(b) only buses
(d) trains or buses
I answered a easily but can't figure out b-d
f a particular brand of jelly available, 84 preferred strawberry, 37 preferred grape, and 100 people would buy one or the other or both. Fill in the remainder of the two-way frequency table.
Strawberry Not Strawberry TOTAL
Not Grape 50
TOTAL 84 150
What is the probability (rounded to the nearest whole percent) that a randomly selected shopper would buy both grape jelly and strawberry jelly?