This topic contains a solution. Click here to go to the answer

Author Question: Suppose it is desired to estimate the average time a customer spends in a particular store to within ... (Read 75 times)

krzymel

  • Hero Member
  • *****
  • Posts: 548
Suppose it is desired to estimate the average time a customer spends in a particular store to within 5 minutes (e.g., + 5 minutes) at 99 reliability. It is estimated that the standard deviation of the times is 15 minutes.
 
  How large a sample should be taken to get the desired interval?
  A) n = 35 B) n = 299 C) n = 25 D) n = 60

Question 2

Suppose a company makes 4 different frozen dinners, and tests their ability to attract customers. They test the frozen dinners in 13 different stores in order to account for any extraneous sources of variation.
 
  The company records the number of customers who purchase each product at each store. What assumptions are necessary for the validity of the F statistic for comparing the response means of the 4 frozen dinners?
  A) The means of the observations corresponding to all the block-treatment combinations are equal, and the variances of all the probability distributions are equal.
  B) The probability distributions of observations corresponding to all the block-treatment combinations are normal, and the sampling distributions of the variances of all the block-treatment combinations are normally distributed.
  C) The probability distributions of observations corresponding to all the block-treatment combinations are normal, and the variances of all the probability distributions are equal.
  D) None. The Central Limit Theorem eliminates the need for any assumptions.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meltdown117

  • Sr. Member
  • ****
  • Posts: 326
Answer to Question 1

D

Answer to Question 2

C




krzymel

  • Member
  • Posts: 548
Reply 2 on: Jul 24, 2018
:D TYSM


ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

For a complete list of videos, visit our video library