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The lengths of pregnancies in a small rural village are normally distributed with a mean of...

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Basic Math

The lengths of pregnancies in a small rural village are normallydistributed with a mean of 270 days and a standard deviation of 15days.

In what range would you expect to find the middle 98% of mostpregnancies?
Between _____and ____.

If you were to draw samples of size 36 from this population, inwhat range would you expect to find the middle 98% of most averagesfor the lengths of pregnancies in the sample?
Between ____and _____ .

Enter your answers as numbers. Your answers should beaccurate to 1 decimal places.

Please only respond to this question if you can do soaccurately and entirely.

Answer & Explanation Solved by verified expert
3.9 Ratings (524 Votes)
Solution mean 270standard deviation 15Using standard normal table1PZ z    See Answer
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