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Three groups of students agree to participate in a study of the effect of music on reading comprehension. The participants in each group take a Nelson-Denny reading skills test under different conditions. One group listens to rock music while taking the test. A second group takes the test while listening to classical music and a third does not listen to any music while taking a test. Their scores are presented below:
Rock
Classical
No music
4
8
6
7
5
3
9
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
Yes/No - Does the rock music mean differ significantly from the mean of the No music.
Yes/No-Does the classical music mean differ significantly from the rock music?
Yes/No-Does the classical music mean differ significantly from the no music mean?
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
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At the .01 significance level, can we conclude that the 30-yeer mortgage rate for small banks is less than 6 percent? Estimate the p -value.
We want to test the hypothesis that the population variances are equal.
They find that these 100 people lost an average of 38 hours with a standard deviation of 9.5 hours. What is the P-value for this significance test?
Can we compute the mean length of stay of workers at the company differs from the mean length of stay at that dangerous industry.
What is the p-value associated with the above sample result?
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.
Determine the mean and standard deviation of this distribution?
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