A random sample of 10 sales receipts for internet sales results in a mean sale amount of $66.30 with a standard deviation of $15

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3 years ago

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A random sample of 10 sales receipts for internet sales results in a mean sale amount of $66.30 with a standard deviation of $15

.75. Using this data, find the 98% confidence interval for the true mean difference between the mean amount of mail-order purchases and the mean amount of internet purchases. Assume that the population variances are not equal and that the two populations are normally distributed. Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval.

Mathematics

1 answer:

slavikrds [6] · Answer 1 · 2022-06-25T01:29:24+03:00

slavikrds [6]3 years ago

6 0

Answer:

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Step-by-step explanation:

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