Onsider two populations for which μ1 = 38, σ1 = 2, μ2 = 23, and σ2 = 4. Suppose that two independent random samples of sizes n1 = 45 and n2 = 59 are selected. Describe the approximate sampling distribution of x1 − x2 (center, spread, and shape).

Center = 15

Spread = 0.599

Shape = Normal

Step-by-step explanation:

The provided information is:

Thus the center(mean) of the distribution is:

The spread (standard deviation) of the distribution is:

The shape of the distribution is also normally distributed.

i think the answer is b.

step-by-step explanation:

not 100% sure though.

step-by-step :