Question

The mean of a normal probability distribution is 360; the standard deviation is 14. |

(a) |
About 68 percent of the observations lie between what two values? |

Value 1 | |

Value 2 | |

(b) |
About 95 percent of the observations lie between what two values? |

Value 1 | |

Value 2 | |

(c) |
Practically all of the observations lie between what two values? |

Value 1 | |

Value 2 | |

Answer #1

(a)

By Empirical Rule:

68% of data will lie in mean Standard deviation

= 360 14 = (346, 374)

So,

Answer is:

Value 1 | 346 |

Value 2 | 374 |

(b)

By Empirical Rule:

95% of data will lie in mean 2 X Standard deviation

= 360 ( 2 X 14) = 360 28 = (332, 388)

So,

Answer is:

Value 1 | 332 |

Value 2 | 388 |

(c)

By Empirical Rule:

Practically all of observations will lie in mean 3 X Standard deviation

= 360 ( 3 X 14) = 360 42 = (318, 402)

So,

Answer is:

Value 1 | 318 |

Value 2 | 402 |

The mean of a normal probability distribution is 380; the
standard deviation is 18. a. About 68% of the observations lie
between what two values? b. About 95% of the observations lie
between what two values? c. Practically all of the observations lie
between what two values?

The mean of a normal probability distribution is 390; the
standard deviation is 14.
a. About 68% of the observations lie between what
two values?
Lower Value
Upper Value
b. About 95% of the observations lie between
what two values?
Lower Value
Upper Value
c. Nearly all of the observations lie between
what two values?
Lower Value
Upper Value

The mean of a normal probability distribution is 380; the
standard deviation is 10.
a. About 68% of the observations lie between what two
values?
About 95% of the observations lie between what two values?
Practically all of the observations lie between what two
values?

The mean of a normal probability distribution is 320; the
standard deviation is 18.
a)About 68% of the observations lie between what two values?
Value #1_____. Value #2______.
b)About 95% of the observations lie between what two values?
Value#1_____. Value#2_____.
c)Practically all of the observations lie between what two
values? Value#1______. Value#2______.

The mean of a normal probability distribution is 340; the
standard deviation is 20.
About 68% of the observations lie between what two values?
About 95% of the observations lie between what two values?
Practically all of the observations lie between what two
values?

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standard deviation is 16. About 68% of the observations lie between
what two values? About 95% of the observations lie between what two
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standard deviation is 15. a. About 68% of the observations lie
between what two values? Lower Value Upper Value b. About 95% of
the observations lie between what two values? Lower Value Upper
Value c. Nearly all of the observations lie between what two
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statisyics

The mean of a normal probability distribution is 360; the
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(Round the final answers to 2 decimal
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a. About what percentage of the observations
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Percentage of
observations %
b. About what percentage of the observations
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Percentage of
observations %
c. About what percentage of the observations
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Percentage of
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standard deviation is 90.
a. μ ± 1σ of the observations lie between what
two values?
Lower Value
Upper Value
b. μ ± 2σ of the observations lie between what
two values?
Lower Value
Upper Value
c. μ ± 3σ of the observations lie between what
two values?
Lower Value
Upper Value

The mean of a normal probability distribution is 380; the
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(Round the final answers to 2 decimal places.)
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Percentage of observations
%
b. About what percentage of the observations
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Percentage of observations
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c. About what percentage of the observations
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