STATISTICAL TECHNIQUES AND TOOLS
SAMPLING DISTRIBUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A sample of 30 women finds the mean height to be 62.3 in The population standard deviation was found to be 1.5 in. Find the margin of error of women’s heights with a 95% CL.
|
|
1.699
|
|
|
0.65
|
|
|
0.537
|
|
|
19.325
|
Explanation:
Detailed explanation-1: -The 95% confidence interval ˉX±1.96√n for unknown is correct for normal data when the population standard deviation is known. It is approximately correct for moderately large n, when is estimated by the sample standard deviation S.
Detailed explanation-2: -The 95% confidence interval for the population mean , given that the sample size n = 49 and the population standard deviation = 7, is X ± 1.96 .
There is 1 question to complete.