Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The mean shopping time,

image text in transcribed
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The mean shopping time, H, spent by customers at the supermarkets has been reported to be 35 minutes, but executives have good reason to believe that u is different from 35 minutes. The executives hire a statistical consultant and ask her to perform a statistical test. To perform her statistical test, the consultant collects a random sample of shopping times at the supermarkets. She computes the mean of these times to be 31 minutes and the standard deviation of the times to be 15 minutes. Based on this information, complete the parts below. (a) What are the null hypothesis H and the alternative hypothesis ,, that should be used for the test? H : 1 H : I 020 0=0 0#0 (b) Suppose that the consultant decides to reject the null hypothesis. What sort of error might she be making? (Choose one) X 5 ? (c) Suppose the true mean shopping time spent by customers at the supermarkets is 35 minutes. Fill in the blanks to describe a Type I error. A Type I error would be (Choose one) V the hypothesis that u is (Choose one) (Choose one) when, in fact, u is (Choose one)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Several Real Variables

Authors: Shmuel Kantorovitz

1st Edition

3319279564, 9783319279565

More Books

Students also viewed these Mathematics questions