Mathematics, 06.05.2020 08:30 lovenahofer
Hannah wanted to investigate whether there was a difference in the time spent in the checkout line between two grocery stores in a large city. She went to Grocery Store J on a Monday morning and recorded the time, in minutes, it took 30 customers to go through a checkout line. Then she went to Grocery Store K on Monday afternoon and recorded the time it took 30 customers to go through a checkout line. Hannah calculated the mean number of minutes for the customers in each line. She intends to conduct a two-sample tt-test for a difference in means between the two stores.
Have all conditions for inference been met?
A. Yes, all conditions have been met.
B. No, the data were not collected using a random method.
C. No, the sample sizes are greater than 10 percent of the population.
D. NO, the sample sizes are not large enough to assume normality of the sampling distribution.
E. No, the distributions of the sample data are not approximately normal.
Answers: 3
Mathematics, 21.06.2019 14:30
Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4
Answers: 2
Mathematics, 21.06.2019 19:30
Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?
Answers: 1
Hannah wanted to investigate whether there was a difference in the time spent in the checkout line b...
Mathematics, 16.07.2019 12:30
History, 16.07.2019 12:30
History, 16.07.2019 12:30
Mathematics, 16.07.2019 12:30
History, 16.07.2019 12:30
Mathematics, 16.07.2019 12:30
Health, 16.07.2019 12:30