Question

PLEASE HELP, I'M HELPLESS, MEDALS INVOLVED!!

A textbook company states that the average time a student needs to take a quiz from its book is 30 minutes with a standard deviation of 3 minutes. A teacher using the book is not sure that this is correct for her classes and wants to check. She collects data on 10 random students and finds that the average time to take the quiz was only 25 minutes. As a result, the teacher performs a two-tailed hypothesis test with a significance level of 5%. Which conclusion is valid based on the results of the test?

Answer 1

A. Her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company stated.

B. The teacher should pick up all unfinished quizzes at 25 minutes because her students are so much faster than average.

C. The teacher does not have enough information to make a conclusion about the average time on the test.

D. Her students, on average, do take the 30 minutes as the textbook company stated.

Answer 2

what do you think it would be and why?

Answer 3

@teddyshakur

Answer 4

I honestly do not know, I know that it has something to do with Z formation but I've never even heard of that. /:

Answer 5

Ok the information states that it takes 10 random students do take he test and it takes them 15 minutes but the company says it takes 30

Answer 6

so from just that statement you can tell the company was incorrect

Answer 7

so from that which answers do you think it could be @teddyshakur

Answer 8

OHHHH wow, I think it's A?

Answer 9

correct because it has enough info for it to tell us that it is 25 minutes to take the test which she did do the over with 10 people so thats why i believe it is A

Answer 10

I hope this helped :)

Answer 11

Omg! Thank you sooo much!! I have one more question I'll tag you in it.

Answer 12

Ok