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Construct a 90% confidence interval for the mean length of all adult harbor seals if a...

Construct a 90% confidence interval for the mean length of all adult harbor seals if a random sample of 12 of these seals had mean length of 32 inches with standard deviation of 3 inches. Assume that the length of the seals is normally distributed.

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We have to construct a 90% confidence interval for the mean length of all adult harbor seals. A random sample of 12 of these seals had mean length of 32 inches with standard deviation of 3 inches. Also, the length of the seals is normally distributed.

So, = 32, = 3, n = 12

Confidence interval for population mean is given as -

90% confidence interval for the mean length of all adult harbor seals is (30.5754, 33.4246).

orchestra answered 1 year ago
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