Question
In: Statistics and Probability
Data obtained from the National Center for Health Statistics show that men between the ages of...
Data obtained from the National Center for Health Statistics show that men between the ages of 20 and 29 have a mean height of 69.3 inches, with a standard deviation of 2.9 inches. A baseball analyst wonders whether the standard deviation of heights of major-league baseball players is less than 2.9 inches. The heights (in inches) of 20 randomly selected players are given below.
| 72 | 74 | 71 | 72 | 76 |
| 70 | 77 | 75 | 72 | 72 |
| 77 | 72 | 75 | 70 | 73 |
| 73 | 75 | 73 | 74 | 74 |
Use Minitab Express to test the analyst's hypothesis at the α = 0.10 level of significance. Report your answers to three decimal places, where applicable.
With a P-value of , we (reject /
fail to reject) the null
hypothesis.
The given data (does / does
not) provide significant evidence that the standard
deviation of heights of baseball players
is (more than / less
than / different from) 2.9 inches.
Solutions
orchestra answered 2 years agoRelated Solutions
Data obtained from the National Center for Health Statisticsshow that men between the ages of...
Data obtained from the National Center for Health Statistics
show that men between the ages of 20 and 29 have a mean height of
69.3 inches, with a standard deviation of 2.9 inches. A baseball
analyst wonders whether the standard deviation of heights of
major-league baseball players is less than 2.9 inches. The heights
(in inches) of 20 randomly selected players are given below.7274717276707775727277727570737375737474Use Minitab Express to perform a Normality Test on this data.
Report your answers rounded to three...
Data from the Office for National Statistics show that the mean age at which men in...
Data from the Office for National Statistics show that the mean
age at which men in Great Britain get married was 32.5. A news
reporter noted that this represents a continuation of the trend of
waiting until a later age to wed. A new sample of 47 recently wed
British men provided their age at the time of marriage. These data
are contained in the Excel Online file below. Construct a
spreadsheet to answer the following questions.
Open spreadsheet
Do...
Data show that men between the ages of 20 and 29 in a general population have...
Data show that men between the ages of 20 and 29 in a general
population have a mean height of 69.3 inches, with a standard
deviation of 2.9 inches. A baseball analyst wonders whether the
standard deviation of heights of major-league baseball players is
less than 2.9 inches. The heights (in inches) of 20 randomly
selected players are shown in the table.
72
74
71
72
76
70
77
76
72
72
77
73
75
70
73
74
75
73...
Data show that men between the ages of 20 and 29 in a general population have...
Data show that men between the ages of 20 and 29 in a general
population have a mean height of 69.3 inches, with a standard
deviation of
3.1 inches. A baseball analyst wonders whether the standard
deviation of heights of major-league baseball players is less
than
3.1 inches. The heights (in inches) of
20 randomly selected players are shown in the table.
Calculate the value of the test statistic.
A) x^2=
B) determine the P-value
72
74
71
72
76...
The National Center for Health Statistics (NCHS) provided data on the distribution of weight (in categories)...
The
National
Center for Health Statistics (NCHS) provided data
on the distribution of weight (in categories) among Americans in
2002. The distribution was based on specific values of body mass
index (BMI) computed as weight in kilograms over height in meters
squared. Underweight was defined as BMI< 18.5, Normal weight as
BMI between 18.5 and 24.9, overweight as BMI between 25 and 29.9
and obese as BMI of 30 or greater. Americans in 2002 were
distributed as follows: 2% Underweight,...
The 2011 National Health Interview Survey by the National Center for Health Statistics (NCHS) provides weight...
The 2011 National Health Interview Survey by the National Center
for Health Statistics (NCHS) provides weight categorization for
adults 1818 years and older based on their body mass index.
The same NCHS report breaks down the sampled individuals by age
group. The percentages of obese individuals in the 2011 survey for
each age group are provided in the table.
Age group
Percent who are obese
1818 to 4444
26.226.2
4545 to 6464
32.232.2
6565 to 7474
31.631.6
7575 and over...
The following is the data obtained from a set of samples on the relation between statistics...
The following is the data obtained from a set of samples on the
relation between statistics
final exam scores
and the students’ confidence rating on mathematical skills.
Student ID
Exam score
Math confidence
Z exam
Z math conf
A
60
1
A
-.77
-1.61
B
80
5
B
.77
1.36
C
70
3
C
0
-0.12
D
50
2
D
-1.55
-0.87
E
90
4
E
1.55
0.62
F
70
4
F
0
0.62
Mean
70
3.17
SD
12.9
1.34...
The following is the data obtained from a set of samples on the relation between statistics...
The following is the data obtained from a set of samples on the
relation between statistics
final exam scores
and the number of missed classes.
Student ID
Exam score
Class missed
Z exam
Z class missed
A
90
0
A
1.46
-1.46
B
80
1
B
0.88
-0.88
C
70
3
C
0.29
0.29
D
60
2
D
-0.29
-0.29
E
50
4
E
-0.87
0.88
F
40
5
F
-1.46
1.46
Mean
65
2.5
SD
17.08
1.71
9.
a....
A National Center for Health Statistics study states that the height of adult women in the...
A National Center for Health Statistics study states that the
height of adult women in the U.S. is approximately normally
distributed with a mean ? = 63. 8 inches, and with a standard
deviation of ? = 2.8 inches. Amy is 70 inches tall. Determine the
probability that a randomly selected woman in the U.S. is taller
than Amy. Would this be unusual?
Illustrate by noting relevant details on the normal curve below
(label the x axis!), and shading the...
a study by the national center of health statistics found that the BMI of american young...
a study by the national center of health statistics
found that the BMI of american young women (ages 20-29) are
normally distributed with a mean of 26.8 and a standard deviation
of 7.4
a) the middle 95% of this population would have a BMI
between______and _____
b) what percent of the population have BMI above 19.4?
c) the national center of health defines a person with BMI
associated with a z-score of -1.12 or less to be underweight.
according to...
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