Question

1.)A manufacturer knows that their items have a normally
distributed length, with a mean of 12.9 inches, and standard
deviation of 1.1 inches.

If one item is chosen at random, what is the probability that it is
less than 14.9 inches long?

2.)A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 5 years, and standard
deviation of 1.1 years.

If you randomly purchase one item, what is the probability it will
last longer than 8 years?

3.)

A manufacturer knows that their items have a normally
distributed length, with a mean of 12.9 inches, and standard
deviation of 1.1 inches.

If one item is chosen at random, what is the probability that it is
less than 14.9 inches long?

Answer #1

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Part 1
A manufacturer knows that their items have a normally
distributed length, with a mean of 17.3 inches, and standard
deviation of 4.3 inches.
If one item is chosen at random, what is the probability that it is
less than 26.5 inches long?
Part 2
A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 13.2 years, and standard
deviation of 0.9 years.
If you randomly purchase one item, what is the probability it...

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distributed lifespan, with a mean of 8.6 years, and standard
deviation of 2.6 years. If you randomly purchase one item, what is
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round to 4 decimal places. & A manufacturer knows that their
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QUESTION B: A manufacturer knows that their items have a
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If you randomly purchase 19 items, what is the...

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