It is known that the average tuition per semester at colleges in Virginia is $3712. Suppose we take a sample of 15 colleges and find that the average tuition per semester is $4512 with a sample standard deviation of $595. We are interested in testing if the average amount of tuition is increasing.
Using the sample of 15 people, what would the 95% confidence interval be for the population mean?
What are the null and alternative hypotheses?
What is the critical value at 95% confidence?
Calculate the test statistic.
Find the p-value
What conclusion would be made here at the 95% confidence level?
Would my conclusion change if I changed alpha to .01?

dhhghghghhrhbb it 5

d

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

konichiwa~! my name is zalgo and i am here to answer your anime-related question today. more than likely, kirishima would kill izuku, marry mino and kiss momo. all of this would be my opinion by the way. (and i am also a weeb lol)

i hope this you! : d

stay and stay proud! " - zalgo

(and do you think you can mark me as brainliest? i'd greatly appreciate it! arigato~! )

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3