Question

Find the standard deviation of this probability distribution. Give
your answer to at least 2 decimal place

x | P(x) |

0 | 0.3 |

1 | 0.05 |

2 | 0.3 |

3 | 0.35 |

2.) A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 10.2 years, and standard
deviation of 2.5 years.

If you randomly purchase one item, what is the probability it will
last longer than 9 years?

Round answer to three decimal places

Answer #2

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answered by: anonymous

A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 2 years, and standard
deviation of 0.5 years. If you randomly purchase one item, what is
the probability it will last longer than 2 years? Answer = (Round
to four decimal places.)

A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 8.4 years, and standard
deviation of 2.5 years. If you randomly purchase one item, what is
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A. A manufacturer knows that their items have a normally
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deviation of 1.4 inches. If one item is chosen at random, what is
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B. A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 8.6 years, and standard
deviation of 2.6 years. If you randomly purchase one item, what is
the probability it will last...

A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 10.7 years, and standard
deviation of 2.9 years.
If you randomly purchase one item, what is the probability it will
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A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 3.6 years,
and standard deviation of 0.7 years. If you randomly purchase one
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A manufacturer knows that their items have a normally
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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 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
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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...

1. A manufacturer knows that their items have a normally
distributed length, with a mean of 17.5 inches, and standard
deviation of 5.1 inches.
If one item is chosen at random, what is the probability that it is
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2. A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 6 years, and standard
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If you randomly purchase one item, what is the probability it will
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distributed lifespan, with a mean of 3.8 years, and standard
deviation of 1.1 years. If you randomly purchase 21 items, what is
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(Give answer to 4 decimal places.)

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