Quizzol

QUESTION:

If the null hypothesis is correct, how many phones (out of 284 phones that were sold) would you expect to be sold from the 32GB, 64GB, 128GB, 256GB models, respectively? In other words, what are the expected frequencies in this case?

32, 64, 128, 256

71, 71, 71, 71

284, 284, 284, 284

63, 73, 77, 71

25, 25, 25, 25

ANSWER:

71, 71, 71, 71

This is correct. Indeed, if the null hypothesis is true (equal demand to all four models) then we would expect the 284 sold phones to be equally divided among the four models. In other words, we would expect that the total sales of each model will be 284/4=71.

Posted by Cleveland on September 23, 2024