Question

In: Math

The weights for newborn babies is approximately normally distributed with a mean of 5lbs and a...

The weights for newborn babies is approximately normally distributed with a mean of 5lbs and a standard deviation of 1.5lbs. Consider a group of 1,000 newborn babies:

How many would you expect to weigh between 4-7lbs?

How many would you expect to weigh less than 6lbs?

How many would you expect to weigh more than 5lbs?

How many would you expect to weigh between 5-10lbs?

Solutions

Expert Solution

The newborn babies expect to weigh between 4-7lbs is

1000 * 0.6868 = 656.8

Answer: 656.8

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The newborn babies expect to weigh less than 6lbs is

1000 * 0.7486 = 748.6

Answer: 748.6

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The newborn babies expect to weigh more than 5lbs is

1000 * 0.5 = 500

Answer: 500

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The newborn babies expect to weigh between 5-10 lbs is

1000 * 0.4999 = 499.9

Answer: 499.9

milcah answered 7 months ago

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