question archive Consider two populations for which μ1 = 39, σ1 = 3, μ2 = 26, and σ2 = 2
Consider two populations for which μ1 = 39, σ1 = 3, μ2 = 26, and σ2 = 2
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Consider two populations for which μ1 = 39, σ1 = 3, μ2 = 26, and σ2 = 2. Suppose that two independent random samples of sizes n1 = 41 and n2 = 54 are selected. Describe the approximate sampling distribution of x1 − x2 (center, spread, and shape).
a. What is the shape of the distribution?
The distribution would be non-normal.
The distribution is approximately normal.
The shape cannot be determined.
b. What is the mean of the distribution?
c. What is the standard deviation of the distribution?
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