Question

In: Statistics and Probability

Nancy, Inc. has three stores located in three different areas. Random samples of the sales of...

Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below. Please note the sample sizes are not equal.

  1. At a 5% level of significance, test to see if there is a significant difference in the average sales of the three stores.

Store 1

Store 2

Store 3

46

34

33

47

36

31

45

35

35

42

39

45

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

Nancy, Inc. has three stores located in three different areas. Random samples of the sales of...
Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below. Please note the sample sizes are not equal. Store 1 Store 2 Store 3 46 34 33 47 36 31 45 35 35 42 39 45 Compute the overall mean At a 5% level of significance, test to see if there is a significant difference in the average sales of the three stores.
Each of the following three datasets represent IQ Scores for three random samples of different sizes....
Each of the following three datasets represent IQ Scores for three random samples of different sizes. The population mean is 100 population standard deviation is 15. Compute the sample mean, median and standard deviation for each sample size: Sample Size 30 106 92 98 103 100 102 98 124 83 70 108 121 102 87 121 107 97 114 140 93 130 72 81 90 103 97 89 98 88 103
Each of the following three datasets represent IQ Scores for three random samples of different sizes....
Each of the following three datasets represent IQ Scores for three random samples of different sizes. The population mean is 100 population standard deviation is 15. Compute the sample mean, median and standard deviation for each sample size: 10) Using the sample size of 30 above in problem eight, your child was tested and has an IQ Score of 140. Calculate Z-Scores to answer these questions: a. If your child has an IQ Score of 75, what percentage of the...
Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales...
Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales manager plans to air a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday. She plans to get the information for Saturday-Sunday digital camera sales at the various outlets and pair them with the number of times the advertisement was shown on the local TV stations. The purpose is to find whether there...
Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales...
Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales manager plans to air a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday. She plans to get the information for Saturday-Sunday digital camera sales at the various outlets and pair them with the number of times the advertisement was shown on the local TV stations. The purpose is to find whether there...
Of 565 samples of seafood purchased from various kinds of food stores in different regions of...
Of 565 samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared to standard gene fragments that can identify the​ species, 45​% were mislabeled. ​a) Construct a 95​% confidence interval for the proportion of all seafood sold in the country that is mislabeled or misidentified. The 95​% confidence interval is from ​b) What does the confidence interval say about seafood sold in the​ country? A. In 95​% of samples of seafood...
Welcome Inc. is a chain of fast-food restaurants located in major metropolitan areas in the South....
Welcome Inc. is a chain of fast-food restaurants located in major metropolitan areas in the South. Sales have been growing very slowly for the last two years. Management has decided to add some new items to the menu, but first, managers want to know more about their customers and their preferences. What kind of research design/s would you recommend? Why? Also, recommend various data-collection technique/s to be used in the chosen design/s. Provide the rationale. 5. Rohtak Police wants to...
You are the HR director of Brew421, Inc. a gourmet coffee retailer with 30 stores located...
You are the HR director of Brew421, Inc. a gourmet coffee retailer with 30 stores located throughout the Midwest. You oversee 15 stores and more than 200 employees and you've been asked to serve on a corporate task force assigned the responsibility of drafting a social media policy that addresses Brew421’s primary areas of concern. The following concerns were raised at task force meetings: • Customers ‘friending’ and ‘following’ employee’s social media accounts. Brew421 wishes to avoid liability for any...
Two different simple random samples are drawn from two different populations. The first sample consists of...
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people with 9 having a common attribute. The second sample consists of 2000 people with 1440 of them having the same common attribute. Compare the results from a hypothesis test of p 1equalsp 2 ​(with a 0.01 significance​ level) and a 99​% confidence interval estimate of p 1minusp 2. Identify the test statistic. Identify the critical​ value(s).
Two different simple random samples are drawn from two different populations. The first sample consists of...
Two different simple random samples are drawn from two different populations. The first sample consists of 40 people with 19 having a common attribute. The second sample consists of 2200 people with 1555 of them having the same common attribute. Compare the results from a hypothesis test of p 1=p 2 ​(with a 0.01 significance​ level) and a 99​% confidence interval estimate of p 1-p 2. Calculate the test statistic z to two decimal places, the critical values, and find...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT