Bayus (1991) studied the mean numbers of auto dealers visited by early and late replacement buyers. Lettingbe the mean number of dealers visited by all late replacement buyers, set up the null and alternative hypotheses needed if we wish to attempt to provide evidence thatdiffers from 4 dealers. A random sample of 100 late replacement buyers yields a mean and a standard deviation of the number of dealers visited of mean (x-bar) = 4.32 ands= 0.67. Using a critical value and assuming approximate normality to test the hypotheses you set up by setting equal to .10, .05, .01, and .001. Do we estimate thatis less than 4 or greater than 4?(Round your answers to 3 decimal places.) What is the null and alternative hypothesis?