Determine the critical values for these tests of a population standard deviation. (a) a right-tailed test with 18 degrees of freedom at the alphaequals0.1 level of significance (b) a left-tailed test for a sample of size nequals22 at the alphaequals0.01 level of significance (c) a two-tailed test for a sample of size nequals30 at the alphaequals0.1 level of significance

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

The surface area of the triangular prism is .

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?