The average cost of tuition and room and board at a small private liberal arts college is reported to be $8,500 per term, but a financial administrator believes that the average cost is higher. A study conducted using 350 small liberal arts colleges showed that the average cost per term is $8,745. The population standard deviation is $1,200. Let ? = 0.05. What is the test statistic for this test?A. ±3.82B. +0.204C. -3.82D. +3.82

D. +3.82

Step-by-step explanation:

The null hypothesis is:

The alternate hypotesis is:

Our test statistic is:

In which X is the sample mean, is the expected mean(null hypothesis), is the standard deviation of the population and n is the size of the sample.

In this problem:

So

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )