Question

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of *x*
values has an approximately normal distribution.

120 | 110 | 110 | 65 | 105 | 115 | 30 | 23 | 100 | 110 |

105 | 95 | 105 | 60 | 110 | 120 | 95 | 90 | 60 | 70 |

(a) Use a calculator with mean and sample standard deviation
keys to find the sample mean price *x* and sample standard
deviation *s*. (Round your answers to two decimal
places.)

x = |
$ |

s = |
$ |

(b) Using the given data as representative of the population of
prices of all summer sleeping bags, find a 90% confidence interval
for the mean price *μ* of all summer sleeping bags. (Round
your answers to two decimal places.)

lower limit | $ |

upper limit | $ |

Answer #1

https://drive.google.com/open?id=14wbauTEu_Tsn5NIxtKRctTXWg3NmlWAF |

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
105
35
105
75
110
50
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x values has an
approximately normal distribution.
55
105
110
115
100
50
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
110
70
50
55
95
50
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
90
45
85
110
55
35
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x values has an
approximately normal distribution. 45 100 115 55 85 120 30 23 100
110 105 95 105 60 110 120 95 90 60 70 (a) Use a calculator with
mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
75
70
90
45
75
90
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x values has an
approximately normal distribution.
55 100 100 100
105 40 30 23
100 110
105 95 105 60
110 120 95 90
60 70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
40
105
70
70
70
55
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x values has an
approximately normal distribution. 35 110 40 75 80 45 30 23 100 110
105 95 105 60 110 120 95 90 60 70 (a) Use a calculator with mean
and...

How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
70
50
115
110
35
100
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...

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