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18. Say that you were asked to analyze each of the cases described below. (No need to solve the problems.) For each case given in column one, in column two indicate the box which procedure you would use (pick/select the appropriate number from the list below the box as the type of test), in column three the test statistic (z or t, or n/a if neither), and, in column four if the test statistic is t test statistic, the number of degrees of freedom, otherwise n/a. A procedure may be used more than once or not at all. Type of Test (write the number from the list below) Test statistic, z or t? If t, then df? Case a) Case b) Proportion – 1 sample Mean – 1 sample Difference of means – independent samples test Mean of differences – matched pairs (paired data) 1. 2. 3. 4. Case a: A supermarket chain wants to know which of two merchandise display methods is more effective. They randomly assign 15 stores to use display type A and 15 others to use display type B, then collect data about the number of items sold at each store and note that the standard deviations of the sales of stores in the sample groups using display A and B are 3 and 5 respectively. Case b: Tags placed on garbage cans allow the disposal of up to 30 pounds of garbage. A random sample of 22 cans averaged 33.2 pounds with a standard deviation of 3.2 pounds. You want to know whether the residents overload their garbage cans or not.

18. Say that you were asked to analyze each of the cases described below. (No need to solve the problems.) For each case given in column one, in column two indicate the box which procedure you would use (pick/select the appropriate number from the list below the box as the type of test), in column three the test statistic (z or t, or n/a if neither), and, in column four if the test statistic is t test statistic, the number of degrees of freedom, otherwise n/a. A procedure may be used more than once or not at all. Type of Test (write the number from the list below) Test statistic, z or t? If t, then df? Case a) Case b) Proportion – 1 sample Mean – 1 sample Difference of means – independent samples test Mean of differences – matched pairs (paired data) 1. 2. 3. 4. Case a: A supermarket chain wants to know which of two merchandise display methods is more effective. They randomly assign 15 stores to use display type A and 15 others to use display type B, then collect data about the number of items sold at each store and note that the standard deviations of the sales of stores in the sample groups using display A and B are 3 and 5 respectively. Case b: Tags placed on garbage cans allow the disposal of up to 30 pounds of garbage. A random sample of 22 cans averaged 33.2 pounds with a standard deviation of 3.2 pounds. You want to know whether the residents overload their garbage cans or not.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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18. Say that you were asked to analyze each of the cases described below. (No need to solve the problems.) For each case given in column one, in column two indicate the box which procedure you would use (pick/select the appropriate number from the list below the box as the type of test), in column three the test statistic (z or t, or n/a if neither), and, in column four if the test statistic is t test statistic, the number of degrees of freedom, otherwise n/a. A procedure may be used more than once or not at all. Туре of Test (write the number from the list below) Test statistic, z or t? If t, then df? Case a) Case b) 1 sample 1 sample Difference of means 1. Proportion 2. Mean – 3. -independent samples test matched pairs (paired data) 4. Mean of differences – Case a: A supermarket chain wants to know which of two merchandise display methods is more effective. They randomly assign 15 stores to use display type A and 15 others to use display type B, then collect data about the number of items sold at each store and note that the standard deviations of the sales of stores in the sample groups using display A and B are 3 and 5 respectively. Case b: Tags placed on garbage cans allow the disposal of up to 30 pounds of garbage. A random sample of 22 cans averaged 33.2 pounds with a standard deviation of 3.2 pounds. You want to know whether the residents overload their garbage cans or not.
Transcribed Image Text:18. Say that you were asked to analyze each of the cases described below. (No need to solve the problems.) For each case given in column one, in column two indicate the box which procedure you would use (pick/select the appropriate number from the list below the box as the type of test), in column three the test statistic (z or t, or n/a if neither), and, in column four if the test statistic is t test statistic, the number of degrees of freedom, otherwise n/a. A procedure may be used more than once or not at all. Туре of Test (write the number from the list below) Test statistic, z or t? If t, then df? Case a) Case b) 1 sample 1 sample Difference of means 1. Proportion 2. Mean – 3. -independent samples test matched pairs (paired data) 4. Mean of differences – Case a: A supermarket chain wants to know which of two merchandise display methods is more effective. They randomly assign 15 stores to use display type A and 15 others to use display type B, then collect data about the number of items sold at each store and note that the standard deviations of the sales of stores in the sample groups using display A and B are 3 and 5 respectively. Case b: Tags placed on garbage cans allow the disposal of up to 30 pounds of garbage. A random sample of 22 cans averaged 33.2 pounds with a standard deviation of 3.2 pounds. You want to know whether the residents overload their garbage cans or not.
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