In each of the following situations, state which of the following items in the STAT-TESTS menu...

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Statistics

In each of the following situations, state which of thefollowing items in the STAT-TESTS menu would be the mostappropriate.
With a sample proportion of 54% and a sample size of 350, testthe claim that a majority of students favor a trimester system.
Answer1Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
Test the claim that the mean waiting time for the elevators onthe Dubois Library is 2.7 minutes using data collected from 150patrons, assuming that the true population standard deviation is0.8 minutes.
Answer2Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
Given two data sets of size n= 13 and n=10, consisting ofmeasurements of heights from two separate populations, find theinterval estimate of the difference between the mean heights forthe populations.
Answer3Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
The incidence of stroke for 400 smokers taking a new form of adrug was 2.5% (10 out of the 400) and the incidence of stroke for600 non-smokers was 1.5% (9 out of the 600). Test to see whetherthe difference in risks is significant.
Answer4Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
Find an interval estimate of the true proportion of M&Msthat are blue using a sample of size n=400 in which 38 M&Ms areblue.
Answer5Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval

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Solution With a sample proportion of 54 and a sample size of 350 test the claim that a majority of students favor a trimester system Answer 1PropZTest Explanation We have to compare the sample proportion with the hypothetical population proportion therefore the appropriate function is 1PropZTest Test See Answer

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With a sample proportion of 54% and a sample size of 350, testthe claim that a majority of students favor a trimester system.	Answer1Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
Test the claim that the mean waiting time for the elevators onthe Dubois Library is 2.7 minutes using data collected from 150patrons, assuming that the true population standard deviation is0.8 minutes.	Answer2Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
Given two data sets of size n= 13 and n=10, consisting ofmeasurements of heights from two separate populations, find theinterval estimate of the difference between the mean heights forthe populations.	Answer3Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
The incidence of stroke for 400 smokers taking a new form of adrug was 2.5% (10 out of the 400) and the incidence of stroke for600 non-smokers was 1.5% (9 out of the 600). Test to see whetherthe difference in risks is significant.	Answer4Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval
Find an interval estimate of the true proportion of M&Msthat are blue using a sample of size n=400 in which 38 M&Ms areblue.	Answer5Choose...Ï‡2-Test1-PropZTest2-SampTInterval2-SampZTest1-PropZIntervalZ-TestZInterval2-SampTTestTInterval