Suppose that you give the SAT to a random sample of 1000 people from a large...
Suppose that you give the SAT to a random sample of 1000 people from a large population in which the scores have mean 1400 and it is known that the population standard deviation is 200. It is known that the distribution is approximately normal.
(a) Construct a 95% confidence interval for the unknown mean of the SAT test.
(b) Construct a 90% confidence interval for the unknown mean of the SAT test.
(c) Construct a 92% confidence interval for the unknown mean of the SAT test.
(d) Construct a 96% confidence interval for the unknown mean of the SAT test.
(e) Construct a 99% confidence interval for the unknown mean of the SAT test.
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Suppose that you give the SAT to a random sample of 1000 people
from a large...
hi there, having trouble with stats homework In a random sample of 22 people, the mean...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
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Use the standard nomal distribution or the distribution to construct a 95% confidence interval for the...
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what is the margin of error and the confidence interval? Question Help In a random sample...
what is the margin of error and the confidence interval?
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hi there, having trouble with stats homework
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