4. A
statistician for the Acme Corporation carries out a test of significance in
order to

determine whether a new advertising campaign has increased mean daily
sales. Which of the following
conclusions is NOT consistent with the other three?

a) We conclude that the advertising campaign was ineffective.

b) We find strong
evidence against the null hypothesis.

A statistical hypothesis is a scientific hypothesis that is testable on the basis of observing a process that is modeled via a set of random variable

p_value. This is the probability, under the null hypothesis, of sampling a test A test result is called statistically significant if it has been predicted as unlikely to have occurred and also we reject the null hypothesis