Random samples of sizes n1  25 and n2  20 were selected from populations A and B, respectively. From the samples, the standard deviations were computed to be s1  5.2 and s2  6.8. a. Do the data provide substantial evidence to indicate the populations have different standard deviations

answer: hey there,

the answer you are looking for is a..

hope this you!

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

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step-by-step explanation: