The past records of a supermarket show that its customers spend an average of $110 per visit at this store. Recently the management of the store initiated a promotional campaign according to which each customer receives points based on the total money spent at the store, and these points can be used to buy products at the store. The management expects that as a result of campaign, the customers should be encouraged to spend more money at the store. To check whether this is true, the manager of store took a sample of 14 customers who visited the store. The following data give the money (in dollars) spent by these custome at this supermarket during their visits. 106.13 107.43 124.68 124.88 101.17 72.75 85.45 86.05 100.4 98.84 101.63 95.56 89.40 119.52 Assume that the money spent by all customers at this supermarket has a normal distribution. Using a 2.5% significance level, can conclude that the mean amount of money spent by all customers at this supermarket after the campaign was started is more tha $110? (Hint: First calculate the sample mean and the sample standard deviation for these data. Then make the test of hypothesis about u.) Round the sample standard deviation and sample mean to three decimal places.

The past records of a supermarket show that its customers spend an average of $110 per visit at this store. Recently the management of the store initiated a promotional campaign according to which each customer receives points based on the total money spent at the store, and these points can be used to buy products at the store. The management expects that as a result of campaign, the customers should be encouraged to spend more money at the store. To check whether this is true, the manager of store took a sample of 14 customers who visited the store. The following data give the money (in dollars) spent by these custome at this supermarket during their visits. 106.13 107.43 124.68 124.88 101.17 72.75 85.45 86.05 100.4 98.84 101.63 95.56 89.40 119.52 Assume that the money spent by all customers at this supermarket has a normal distribution. Using a 2.5% significance level, can conclude that the mean amount of money spent by all customers at this supermarket after the campaign was started is more tha $110? (Hint: First calculate the sample mean and the sample standard deviation for these data. Then make the test of hypothesis about u.) Round the sample standard deviation and sample mean to three decimal places.

Name: The past records of a supermarket show that its customers spend an av
Uploaded: 2024-03-20T07:06:27.000Z
Channel: Bartleby
Description: The past records of a supermarket show that its customers spend an average of $110 per visit at this store. Recently themanagement of the store initiated a promotional campaign according to which each customer receives points based on the totalmoney

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

If rinas cell phone bills for the past 5 months have been $55,$60,$54,$66 and $70 what was her average call phone bill for the past 5 months
To get the best deal on an iPhone, Tom searched several websites and found the prices on a specific model as below: $324, $267, $186, $326, $273, $446, $393, $409, compute the standard
Last years freshman class at Big State University totaled 5,336 students. Of those 1,260 received a merit scholarship to help offset tuition costs their freshman year (although the amount varies per student). The amount a student received was N($3,459,$466). If the cost of full tuition was $4,200 last year, what percentage of students who received a merit scholarship did not receive enough to cover full tuition? (Round your answer to the nearest whole percent)
An epidemiologists is studying two populations that have recently had an outbreak of a disease with similar symptoms. In one population of 600 people, 450 of them became infected and 3 of them died. In the other population of 200 people, 20 were infected and 10 died. Did the two towns have an outbreak of the same disease? Defend your answer. Use prevalence and mortality rates to help you.
According to a certain central bank from 2000 to 2016 the average price of a new home in a certain region increased by 53% to $402,000. What was the average price of a new home in 2000?
In 14 weeks, the value of Bob Treatman's day trading account decreased by $588. What was the average weekly change in the value of the account? .... A. $40 per week O B. - $44 per week O C. - $42 per week O D. - $48 per week
If the U.S. Economy grew by 4% for three consecutive years, the economy would have grown by 12% over the time period. Use numbers to argue for or against this statement. If it is not true by what percentage would the economy have grown
If I got 8 out of 12 answers the same as a classmate, is it possible for me to get no answers correct and him to get 75% correct?
Greg works as a carpenter. There is a 3 percent chance he loses a finger which they value at $200000. His job makes him $250000. What would the fair premium per $ for Greg to insure against losing his fingers be if his is risk adverse?
According to the results of a survey, 38% of 271 people indicated that American football is their favorite sport. Assuming that the percentage remains the same, how many more people should be surveyed to have a margin of error of 4%? Round up to the nearest whole number, if necessary. In order to have a margin of error of 4%, you need to survey more people.
Suppose that the results of a survey show that 53% of people consider summer as their favorite season. How many people should be surveyed in order to have a margin of error of 6%? Round up to the nearest whole number, if necessary. In order to have a margin of error of 6%, people should be surveyed.
In some 4.0 grading systems, a student's grade point aversge (GPA) is calculated by assigning letter grades the following numerical values. (See attachment) Use this grading system to find this student's GPA. Round to the nearest hundredth. Tessa's cumulative GPA for 3 semesters was 3.18 for 46 course units. Her fourth semester GPA was 3.72 for 12 course units. What is Tessa's cumulative GPA for all 4 semesters?