A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20, = 30, and s = 10. Based on this information, and using a 95% confidence level, which of the following is a valid calculation from the sample statistics?
A) The critical value is 1.7921.
B) The critical value is 1.96.
C) The standard deviation of the sampling distribution ofis 0.50.
D) The margin of error is approximately4.68.

Question

A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20,  = 30, and s = 10. Based on this information, and using a 95% confidence level, which of the following is a valid calculation from the sample statistics?
A) The critical value is 1.7921. 
B) The critical value is 1.96. 
C) The standard deviation of the sampling distribution ofis 0.50. 
D) The margin of error is approximately4.68.

Quizplus · Accepted Answer

The Answer of A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20,  = 30, and s = 10. Based on this information, and using a 95% confidence level, which of the following is a valid calculation from the sample statistics?
A) The critical value is 1.7921. 
B) The critical value is 1.96. 
C) The standard deviation of the sampling distribution ofis 0.50. 
D) The margin of error is approximately4.68.

A Random Sample Is Selected from a Normally Distributed Population