Suppose a normally distributed numerical variable X has MU = 15 and Sigma = 6. Answer...
Suppose a normally distributed numerical variable X has MU = 15 and Sigma = 6. Answer the following questions about the sampling distribution of the mean if the sample size is 100.
1. The sampling distribution of X bar is (blank) distributed with mu X bar = (blank) and sigma X bar = (blank). (fill in the blanks)
2. Suppose a random sample is chosen. what is the probability that this selected sample mean is less than 14.2?
3. What is the probability that the selected sample mean is between 15 and 16?
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Suppose a normally distributed numerical variable X has MU = 15
and Sigma = 6. Answer...
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 142 daysμ=142 days and standard deviation sigma equals 9 daysσ=9 days. Complete pa...
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 142 daysμ=142 days and standard deviation sigma equals 9 daysσ=9 days. Complete parts (a) through (f) below. (a) What is the probability that a randomly selected pregnancy lasts less than 139139 days?The probability that a randomly selected pregnancy lasts less than 139139 days is approximately 0.36940.3694. (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and...
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