SOLUTION: Assume that a 90% confidence interval for the mean is 18.5 < u < 21.5. The null hypothesis is ho u =17 at a = .10 would a. be rejected because 17.0 is less than 18.5. b. no

Question 1086946: Assume that a 90% confidence interval for the mean is 18.5 < u < 21.5. The null hypothesis is ho u =17 at a = .10 would
a. be rejected because 17.0 is less than 18.5.

b. not be rejected because 17.0 is less than 21.5.

c. not be rejected because 21.5 is more than 18.5.

d. be rejected because 17.0 is not equal to 20.0.

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The parameter is NOT in the confidence interval . Because it's outside the confidence interval, we reject the null hypothesis (H0).

Answer: a. be rejected because 17.0 is less than 18.5.
which essentially is another way of saying "the parameter is outside the confidence interval"
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