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

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

How do you solve a question like this?