In a hypothesis test with hypotheses and , a random sample of 40 elements selected from the population produced a mean of 23.5. assume that 4.9, and that the test is to be made at the 10% significance level. what are the critical values of z?

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step-by-step explanation:

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see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph