Short Answer
Coach Z, the mid-distance running coach for the Olympic team of an eastern European country, claims that his six-month training program significantly reduces the average time to complete a 1500-meter run. Five mid-distance runners were randomly selected. Their times (in minutes) for the 1500-meter run were recorded before and after six months of training under Coach Z. The results are given below.
Construct the appropriate 95 percent confidence interval when we want to test whether there is a difference (sd = .228).
Correct Answer:

Verified
[−.003, .563]
t4,.025 = 2....View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
t4,.025 = 2....
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q38: When comparing two independent population variances, the
Q39: In testing the difference between the means
Q40: A test of mathematical ability is given
Q41: A new company is in the process
Q42: In testing the difference between the means
Q44: If we are testing the difference between
Q45: In an experiment involving matched pairs, a
Q46: Testing H<sub>0</sub>: σ<sub>1</sub><sup>2</sup> = σ<sub>1</sub><sup>2</sup>, H<sub>A</sub>: σ<sub>1</sub><sup>2</sup>
Q47: Construct a 95 percent confidence interval for
Q48: Given the following information about a hypothesis