Question: A large supermarket chain has a target average waiting time of 90 seconds for customers who queue to use the self-service checkouts. To test that

A large supermarket chain has a target average waiting time of 90 seconds for customers who queue to use the self-service checkouts. To test that a particular store is meeting this target, the waiting time for a random sample of 50 customers in this queue is recorded during a one-day trading period. The average waiting time is found to be 101 seconds with a standard deviation of 26.5 seconds. Using a 0.10 level of significance, is there sufficient evidence to show that the actual waiting time is different from the target of 90 seconds?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Business Statistics Using Excel Questions!

1 Answer saved Marked out of 1.00 Flag question Question text A hypothesis test has a test statistic which follows a tdistribution with 14 degrees of freedom. It is a twotailed test. The value of the...

Q1- When performing a hypothesis test there exists the possibility of making errors in our conclusion. There are 2 types of errors and they referred to as Type I error and Type II error. Which of the...

A large Australia-owned supermarket chain has a target average processing time of 90 seconds for customers who reach a checkout in the "12 items or less" queue. To test that its Hobart city store is...

Use the DoublyLinkedList.hpp and the Queue.hpp (Provided at the Bottom, just use the Functions, you don't need to code anything in the DoublyLinkedList.hpp and/or the Queue.hpp) to created a...

I want to create a simulation like what is described in the picture below in a main.cpp using the DoublyLinkedList.hpp and the Queue.hpp DON'T MODIFY THE DoublyLinkedList.hpp and the Queue.hpp, just...

IN NEED OF HELP is an example of an output of the transformation p recess. A) Information B) Material C) Intangible needs D) Satisfied customers Which of these statements about flows in a supply...

IN NEED OF HELP IN NEED OF HELP Assignments Name ts is best? 1) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Which of these statements A) An...

How are the changes that Taco Bell implemented, such as K-minus, SOS, etc., similar to, or different from, the various concepts/techniques that were presented in weeks 1-8 in this module. Provide a...

Use the following adjusted trial balance of Hanson Trucking Company to prepare a classified balance sheet as of December 31, 2014. Account Title Debit Credit S 13,000 29,600 3,100 170,000 Cash...

Some sequences are defined by a recursion formula that is, a formula that defines each term of the sequence in terms of one or more of the preceding terms. For example, if {an} is defined by a1 = 1...

The primary benefit of having/using credit is: convenience interest point building debt reducing

Find the equivalent capacitance of the capacitance bridge shown in Figure P6-5 6. CEO C C C C