Question
In: Statistics and Probability
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age
(Newsweek, January 19, 2004). The following show the hours
of sleep on weeknights for a sample of individuals age 49 and
younger and for a sample of individuals age 50 and older.
| Hours of Sleep | |||||||
| Age | Fewer than 6 | 6 to 6.9 | 7 to 7.9 | 8 or more | Total | ||
| 49 or younger | 34 | 58 | 80 | 68 | 240 | ||
| 50 or older | 35 | 64 | 70 | 91 | 260 | ||
- Conduct a test of independence
to determine whether the hours of sleep on weeknights are
independent of age. Use = .05. Use Table 12.4.
Compute the value of the 2 test statistic (to 2 decimals).
- Using the total sample of 500, estimate the percentage of
people who sleep less than 6, 6 to 6.9, 7 to 7.9, and 8 or more
hours on weeknights (to 1 decimal).
Less than 6 hours % 6 to 6.9 hours % 7 to 7.9 hours % 8 or more hours %
Solutions
orchestra answered 2 years agoRelated Solutions
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age
(Newsweek, January 19, 2004). The following show the hours
of sleep on weeknights for a sample of individuals age 49 and
younger and for a sample of individuals age 50 and older.
Hours of
Sleep
Age
Fewer than 6
6
to 6.9
7
to 7.9
8
or more
Total
49
or younger
35
65
71
69
240
50
or older
37...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age (Newsweek,
January 19, 2004). The following show the hours of sleep on
weeknights for a sample of individuals age 49 and younger and for a
sample of individuals age 50 and older. Hours of Sleep Age Fewer
than 6 6 to 6.9 7 to 7.9 8 or more Total 49 or younger 30 63 78 69
240 50 or older 40...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age
(Newsweek, January 19, 2004). The following show the hours
of sleep on weeknights for a sample of individuals age 49 and
younger and for a sample of individuals age 50 and older.
Hours of
Sleep
Age
Fewer than 6
6 to 6.9
7 to 7.9
8 or more
Total
49 or younger
38
56
70
76
240
50 or older
30...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age
(Newsweek, January 19, 2004). The following show the hours
of sleep on weeknights for a sample of individuals age 49 and
younger and for a sample of individuals age 50 and older.
Hours of
Sleep
Age
Fewer than 6
6 to 6.9
7 to 7.9
8 or more
Total
49 or younger
39
58
71
72
240
50 or older
32...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep
Foundation used a survey to determine whether hours of sleeping per
night are independent of age (Newsweek, January 19, 2004).
The following show the hours of sleep on weeknights for a sample of
individuals age 49 and younger and for a sample of individuals age
50 and older.
Hours of
Sleep
Age
Fewer than 6
6 to 6.9
7 to 7.9
8 or more
Total
49 or younger
38
65
70
67
240
50 or older
34...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age
(Newsweek, January 19, 2004). The following show the hours
of sleep on weeknights for a sample of individuals age 49 and
younger and for a sample of individuals age 50 and older.
Hours of
Sleep
Age
Fewer than 6
6 to 6.9
7 to 7.9
8 or more
Total
49 or younger
30
64
76
70
240
50 or older
30...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleeping per night are independent of age (Newsweek,
January 19, 2004). The following show the hours of sleep on
weeknights for a sample of individuals age 49 and younger and for a
sample of individuals age 50 and older. Hours of Sleep Age Fewer
than 6 6 to 6.9 7 to 7.9 8 or more Total 49 or younger 37 58 71 74
240 50 or older 34...
The National Sleep Foundation used a survey to determine whether hours of sleep per night are...
The National Sleep Foundation used a survey to determine whether
hours of sleep per night are independent of age (Newsweek, January
19, 2004). A sample of individuals was asked to indicate the number
of hours of sleep per night with categorical options: fewer than 6
hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later
in the survey, the individuals were asked to indicate their age
with categorical options: age 39 or younger and age...
A survey was conducted to determine whether hours of sleep per night are independent of age....
A survey was conducted to determine whether hours of sleep per
night are independent of age. A sample of individuals was asked to
indicate the number of hours of sleep per night with categorical
options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8
hours or more. Later in the survey, the individuals were asked to
indicate their age with categorical options: age 39 or younger and
age 40 or older. Sample data follow.
Hours...
A survey was conducted to determine whether hours of sleep per night are independent of age....
A survey was conducted to determine whether hours of sleep per
night are independent of age. A sample of individuals was asked to
indicate the number of hours of sleep per night with categorical
options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8
hours or more. Later in the survey, the individuals were asked to
indicate their age with categorical options: age 39 or younger and
age 40 or older. Sample data follow.
Hours...
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