Question 4 your answer is correct identify the most

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quiz13 91

Question 4   Your answer is CORRECT . Identify the most appropriate test to use for the following situation : In a experiment on relaxation techniques , subject 's brain signals were measured before and after the relaxation exercises . We wish to determine if the relaxation exercise slowed the brain waves .
a) Matched pairs
b) One sample t test
c) Two sample t test
d) Two sample p test
Answer:  a)   Matched pairs
Question 5   Your answer is CORRECT . To use the two sample t procedure to perform a significance test on the difference of two means , we assume :
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Question 7   Your answer is CORRECT . It has been observed that some persons who suffer renal failure , again suffer renal failure within one year of the first episode . This is due , in part , to damage from the first episode . The performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode . In order to do this two groups of people suffering a first episode are selected . There are 45 people in the first group and this group will be administered the new drug . There are 75 people in the second group and this group will be administered a placebo . After one year , 12 % of the first group has a second episode and 14 % of the second group has a second episode . Conduct a hypothesis test to determine , at the significance level 0.1 , whether there is reason to believe that the true percentage of those in the first group who suffer a second episode is less than the true percentage of those in the second group who suffer a second episode ? Select the [ Alternative Hypothesis , Value of the Test Statistic ] .
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Question 4 Your answer is CORRECT. Identify the most appropriate test to use for the following situation: In a experiment on relaxation techniques, subject's brain signals were measured before and after the relaxation exercises. We wish to determine if the relaxation exercise slowed the brain waves. a) Matched pairs b) One sample t test c) Two sample t test d) Two sample p test
Question 5 Your answer is CORRECT. To use the two sample t procedure to perform a significance test on the difference of two means, we assume:
Question 6 Your answer is CORRECT.
12/8/13 4:49 PM Print Test Solid fats are more likely to raise blood cholesterol levels than liquid fats. Suppose a nutritionist analyzed the percentage of saturated fat for a sample of 6 brands of stick margarine (solid fat) and for a sample of 6 brands of liquid margarine and obtained the following results: We want to determine if there a significant difference in the average amount of saturated fat in solid and liquid fats. What is the test statistic? (assume the population data is normally distributed)
Page 3 of 6 Question 7 Your answer is CORRECT. It has been observed that some persons who suffer renal failure, again suffer renal failure within one year of the first episode. This is due, in part, to damage from the first episode. The performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode. In order to do this two groups of people suffering a first episode are selected. There are 45 people in the first group and this group will be administered the new drug. There are 75 people in the second group and this group will be administered a placebo. After one year, 12% of the first group has a second episode and 14% of the second group has a second episode. Conduct a hypothesis test to determine, at the significance

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