Question
In: Statistics and Probability
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
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 75 85 80 65 50 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 $
Solutions
Expert Solution
a) x = 81.65
s=27.14
b) lower limit =71.16
upper limit =92.14
orchestra answered 1 year agoRelated Solutions
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
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 ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
110
35
80
90
65
80
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x values has an
approximately normal distribution. 65 75 35 65 70 60 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...
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 ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
90
65
110
35
95
50
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
90
65
95
70
55
65
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...
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 ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
45
50
115
115
40
100
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x values has an
approximately normal distribution. 105 80 45 35 105 65 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...
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 ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
35
120
70
65
90
40
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
45
65
105
110
120
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...
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 ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
35
110
40
100
65
70
30
23
100
110
105
95
105
60
110
120
95
90
60
70
(a) Use a calculator with mean and...
How much does a sleeping bag cost? Let's say you want a sleeping bag that should...
How much does a sleeping bag cost? Let's say you want a sleeping
bag that should keep you warm in temperatures from 20°F to 45°F. A
random sample of prices ($) for sleeping bags in this temperature
range is given below. Assume that the population of x
values has an approximately normal distribution.
75
95
55
105
110
115
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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