If the null hypothesis H0 140 is rejected at 010 when a me

If the null hypothesis H₀: = 14.0 is rejected at = 0.10 when a mean of 15.0 is obtained from a random sample, one could also say that

A) the 10% confidence interval for the population mean contains the value 15.0.

B) the 90% confidence interval for the population mean contains the value 15.0.

C) the 90% confidence interval for the population mean does not contain the value 14.0.

D) the 10% confidence interval for the population mean does not contain the value 14.0.

Solution

C) the 90% confidence interval for the population mean does not contain the value 14.0.

because CI gives all plausible values of mean, if we reject 14, then 14 should not be in the corresponding CI