Essay
A random sample of 53 observations was taken. The average in the sample was 90 with a variance of 400.
a.Construct a 98% confidence interval for .
b.Construct a 99% confidence interval for .
c.Discuss why the 98% and 99% confidence intervals are different.
d.What would you expect to happen to the confidence interval in Part a if the sample size was increased? Be sure to explain your answer.
Correct Answer:
Verified
a.83.41 to 96.59
b.82.65 to 97...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
b.82.65 to 97...
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q116: A sample of 60 students from a
Q117: From a population that is not
Q118: If we want to provide a 95%
Q119: If the standard deviation of the lifetime
Q120: Exhibit 8-6<br>A sample of 75 information system
Q122: The absolute value of the difference between
Q123: In a sample of 400 voters, 360
Q124: The monthly starting salaries of students who
Q125: If we change a 95% confidence interval
Q126: A simple random sample of 36 items