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A Company Has Recorded Data on the Weekly Sales for Its

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A company has recorded data on the weekly sales for its product (y) and the unit price of the competitor's product (x). The data resulting from a random sample of 7 weeks follows. Use Excel to:
a.compute a 95% confidence interval for expected sales for all weeks when the competitor's price is .30.
b.compute a 95% prediction interval for sales for a week when the competitor's price is 30.
A company has recorded data on the weekly sales for its product (y) and the unit price of the competitor's product (x). The data resulting from a random sample of 7 weeks follows. Use Excel to: a.compute a 95% confidence interval for expected sales for all weeks when the competitor's price is .30. b.compute a 95% prediction interval for sales for a week when the competitor's price is 30.

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