Launchpad For Moore's Statistics: Concepts And Controversies (twelve Month Access)
9th Edition
ISBN: 9781464192982
Author: Moore, David S., Notz, William I.
Publisher: W. H. Freeman
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Chapter 6, Problem 1CS
To determine
To explain: The phrase “statistically significant.”
Expert Solution & Answer
Answer to Problem 1CS
Solution: The “statistically significant” can be interpreted as there is strong indication that the withdrawal symptoms can occur too frequently just by chance when the subjects get the capsules that do not contain caffeine.
Explanation of Solution
The statistically significant result indicates that there is a strong signal that the results can occur too frequently just by chance.
In the provided study, a number of subjects displayed withdrawal symptoms when they got the capsules that did not contain caffeine. The amount of the symptoms was measured as statistically significant. Here, “statistically significant” can be explained as there is a strong evidence that the withdrawal symptoms can occur too frequently just by chance when the subjects get the capsules that do not contain caffeine.
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Students have asked these similar questions
32. Consider a normally distributed population with mean μ = 80
and standard deviation σ = 14.
a.
Construct the centerline and the upper and lower control
limits for the chart if samples of size 5 are used.
b. Repeat the analysis with samples of size 10.
2080 101
c. Discuss the effect of the sample size on the control limits.
Consider the following hypothesis test.
The following results are for two independent samples taken from the two populations.
Sample 1
Sample 2
n 1 = 80
n 2 = 70
x 1 = 104
x 2 = 106
σ 1 = 8.4
σ 2 = 7.6
What is the value of the test statistic? If required enter negative values as negative numbers (to 2 decimals).
What is the p-value (to 4 decimals)? Use z-table.
With = .05, what is your hypothesis testing conclusion?
Periodically, Merrill Lynch customers are asked to evaluate Merrill Lynch financial consultants and services (2000 Merrill Lynch Client Satisfaction Survey). Higher ratings on the client satisfaction survey indicate better service with 7 the maximum service rating. Independent samples of service ratings for two financial consultants are summarized here. Consultant A has 10 years of experience, whereas consultant B has 1 year of experience. Use = .05 and test to see whether the consultant with more experience has the higher population mean service rating.
Consultant A
Consultant B
= 16
= 10
= 6.82
= 6.25
= .64
= .75
State the null and alternative hypotheses.H0: 1 - 2 Ha: 1 - 2
Compute the value of the test statistic (to 2 decimals).
What is the p-value?The p-value is
What is your conclusion?
Chapter 6 Solutions
Launchpad For Moore's Statistics: Concepts And Controversies (twelve Month Access)
Ch. 6 - Prob. 1CSCh. 6 - Prob. 2CSCh. 6 - Prob. 3CSCh. 6 - Prob. 1CTBCh. 6 - Prob. 2CTBCh. 6 - Prob. 3CTBCh. 6 - Prob. 4CTBCh. 6 - Prob. 5CTBCh. 6 - Prob. 6CTBCh. 6 - Prob. 7CTB
Ch. 6 - Prob. 8ECh. 6 - Prob. 9ECh. 6 - Prob. 10ECh. 6 - Prob. 11ECh. 6 - Prob. 12ECh. 6 - Prob. 13ECh. 6 - Prob. 14ECh. 6 - Prob. 15ECh. 6 - Prob. 16ECh. 6 - Prob. 17ECh. 6 - Prob. 18ECh. 6 - Prob. 19ECh. 6 - Prob. 20ECh. 6 - Prob. 21ECh. 6 - Prob. 22ECh. 6 - Prob. 23ECh. 6 - Prob. 24ECh. 6 - Prob. 25ECh. 6 - Prob. 26ECh. 6 - Prob. 27ECh. 6 - Prob. 28ECh. 6 - Prob. 29ECh. 6 - Prob. 30E
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