Author Question: A random sample of 25 observations is selected from a normally distributed population. The sample ... (Read 130 times)

sarasara · **on:** Jun 24, 2018

A random sample of 25 observations is selected from a normally distributed population. The sample variance is 10 . In the 95 confidence interval for the population variance, the upper limit is:
a. 19.353
b. 17.331
c. 17.110
d. 6.097

Question 2

In a Friedman test for comparing four populations, provided that there as eight blocks, the test statistic is calculated as Fr = 10.98 . If the test is conducted at the 5 significance level, the conclusion and p-value will be:
a. reject the null hypothesis, and 0.01 < p-value < 0.025.
b. reject the null hypothesis, and p-value > 0.025.
c. do not reject the null hypothesis, and 0.025 < p-value < 0.05.
d. do not reject the null hypothesis, and p-value > 0.05.