The manager at a grocery store believes that the majority of customers would like to see more self-service checkouts available in order to facilitate faster checkouts when shopping for only a few items. The manager takes a poll of 60 randomly selected customers and asks them "Would you like to see more self-service checkout lanes available at the store?" and records the results below (Note: Y = Yes, N = No): N Y Y Y Y N N N Y Y Y N N N Y Y N Y Y Y Y N N Y Y N Y N Y N Y Y Y Y N Y Y Y N Y Y N Y Y Y N N N Y Y Y Y Y N N Y Y Y Y N Test the manager's claim that the majority of customers are in favour of more self-service checkouts available at a 10% level of significance. a. Calculate the test statistic. z= Round to two decimal places if necessary Enter 0 if normal approximation to the binomial cannot be used b. Determine the critical value(s) for the hypothesis test.= Round to two decimal places if necessary Enter 0 if normal approximation to the binomial cannot be used c. Conclude whether to reject the null hypothesis or not based on the test statistic. Reject Fail to Reject Cannot Use Normal Approximation to Binomial

The manager at a grocery store believes that the majority of customers would like to see more self-service checkouts available in order to facilitate faster checkouts when shopping for only a few items. The manager takes a poll of 60 randomly selected customers and asks them "Would you like to see more self-service checkout lanes available at the store?" and records the results below (Note: Y = Yes, N = No): N Y Y Y Y N N N Y Y Y N N N Y Y N Y Y Y Y N N Y Y N Y N Y N Y Y Y Y N Y Y Y N Y Y N Y Y Y N N N Y Y Y Y Y N N Y Y Y Y N Test the manager's claim that the majority of customers are in favour of more self-service checkouts available at a 10% level of significance. a. Calculate the test statistic. z= Round to two decimal places if necessary Enter 0 if normal approximation to the binomial cannot be used b. Determine the critical value(s) for the hypothesis test.= Round to two decimal places if necessary Enter 0 if normal approximation to the binomial cannot be used c. Conclude whether to reject the null hypothesis or not based on the test statistic. Reject Fail to Reject Cannot Use Normal Approximation to Binomial

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

Mrs. Krabappel writes a multiple-choice test with twenty questions, each of which has five choices (ABCDE). If Jimmy guesses randomly at all twenty questions, how many questions should Jimmy get right?
Suppose Ted is creating a football team in a video game that features many NFL players. He decides to identify players who are outliers in a few statistics he has chosen. Currently, he's looking at wide receivers. The game includes the top 100 receivers in 2012 by number of receptions. Ted, however, is more interested in receiving yards, and the table shows the five-number summary of the available players in the game (in yards): Minimum 1st quartile (Q1) Median 3rd quartile (Q3) Maximum 258.0 549.5 743.0 936.5 1964.0 The mean is 787.6 yds with a standard deviation of 311.3 yds. Ted first calculates the interquartile range (IQR). Next, to determine suspected outliers, he calculates Q1 – 1.5 · IQR and Q3 + 1.5 · IQR. Specify those results to at least one decimal place. Q1 - 1.5 · IQR = Q3 + 1.5 · IQR =
Virginia polled a large sample of individuals to find the percentage of students with known food allergies and the percentage of students without known food allergies. Which of the following could sufficiently display the data if only the two given categories are to be included? Select the correct answer below: bar graph pie chart either a pie chart or a bar graph neither a pie chart nor a bar graph
At Cityville High School, 36% of the students participate in sports, 36% of the students participate in academic clubs, and 13% of the students participate in both sports and academic clubs. Find the proportion of students who participate in either sports or academic clubs.
A movie club surveyed 250 high school students. The students were asked how often they go to the movies and whether they prefer comedies or dramas. Their responses are summarized in the following table. Twice a monthor less Three times a monthor more Comedy 85 35 Drama 100 30 (a) What percentage of the students prefer dramas ? (b) What percentage of the students go to the movies twice a month or less?
Assume that the U.S Open Golf Tournament was played at Congressional Country club, with prizes ranging from $465,000 for first place to $5000. Par for the course is 70. The tournament consists of four rounds played on different days. Suppose the scores for each round of the 32 players who placed in the money (more than $17,000) were given on a web site. The scores for the first round were as follows: 71 66 68 72 74 73 71 71 74 73 73 71 75 71 72 71 78 75 71 71 74 75 66 75 75 76 71 72 72 73 71 67
Isabel has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the 10 Freeway, and the other is to go via 60 Freeway. In order to determine which way she should travel on a daily basis, Isabel has recorded the travel times for samples of eight trips via the 10 Freeway and eight trips via the 60 Freeway. The following table gives the travel timnes (in minutes) for the sixteen trips. Travel times in minutes 10 Freeway 71, 68, 72, 72, 73, 71, 66, 76 60 Freeway 67, 75, 69, 75, 75, 81, 71, 72 Send data to calculator Send data to Excel Assume that the two populations of travel times are normally distributed and that the population variances are equal. Can we conclude, at the 0.01 level of significance, that u,, the mean travel time via the 10 freeway, is different from u,, the mean travel time via the 60 freeway? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your…
fill blanks.
The U.S. Open Golf Tournament was played at Congressional Country Club, Bethesda, Maryland, with prizes ranging from $465,000 for first place to $5000. Par for the course is 70. The tournament consists of four rounds played on different days. The scores for each round of the 32 players who placed in the money (more than $17,000) are given. The scores for the first round were as follows. 71 65 67 73 74 73 70 75 71 72 71 75 75 71 71 72 72 73 71 67 66 75 75 75 71 The scores for the fourth round for these players were as follows. 69 69 73 73 73 74 72 72 70 71 71 72 71 71 71 71 69 70 72 74 72 71 68 69 70 69 71 73 74 1 2 3 4 (a) Make a stem-and-leaf display for the first-round scores. Use two lines per stem. (Enter your answers from smallest to largest separated by spaces. Enter NONE for stems with no leaves.) First-Round Scores X X X X 5 6 7 8 71 71 74 73 71 74 75 NONE NONE NONE NONE 70 NONE 72 73 (b) Make a stem-and-leaf display for the fourth-round scores. Use two lines per stem. (Enter…
A report just came out that stated that 23.8% of all Americans say that vanilla is their favorite ice cream, 20.9% say that chocolate is their favorite, 9.1% favor butter pecan, 8.2% favor strawberry, and the rest have other favorites. An ice cream shop owner thinks that her customers are not like the rest of America. The table below shows the results of $55 of her patrons' ice cream selections. What can be concluded at the a = 0.05 significance level? a. Complete the table by filling in the expected frequencies. Round your answers to the nearest whole number. Frequencies of Favorite Ice Cream Outcome Frequency Expected Frequency vanilla 216 Chocolate 195 Butter Pecan91 Strawberry 92 Other 361 b. What is the correct statistical test to use? Select an answer V c. What are the null and alternative hypotheses? Но: O The distribution of favorite ice cream for customers at her shop is the same as it is for Americans in general. O The distribution of favorite ice cream for customers at her…
A fundraiser is offering a small gift to people making a donation. The donor can choose one of four gifts: a mug, a t-shirt, a plush toy, or a water bottle. The fundraiser would like to know if any of the gifts were more or less popular or were they equal in preference. The data for n= 40 donors are below: