Ahypothesis will be used to test that a population mean equals 7 against the alternative that the population mean does not equal 7 with unknown variance. what are the critical values for the test statistic t0 for the following significance levels and sample sizes?

(a) ? = 0.01 and n = 20 (b) ? = 0.05 and n = 12 (c) ? = 0.10 and n = 15

View solution attached below.

Hope this helps. Thanks

i will pick c put check it over to be sure

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.