Question
In: Statistics and Probability
A sample of 10 employee’s height is taken to design the height of doorway. The measurements...
A sample of 10 employee’s height is taken to design the height of doorway. The measurements (in cm) are in the following table
167.87
153.24
150.39
173.38
177.91
155.88
171.06
155.57
171.43
178.62
What should be the height of the doorway if you want that just a 0.1% of the employees have troubles passing through it?
You think that the initial 10-employee sample is too small and you want to ensure a confidence level of 97% with an error in the observed mean of +/-2 percent. What would be the size of the proposed sample?
What should be the correct distribution you use to calculate the size of the sample? Why?
Solutions
orchestra answered 1 year agoRelated Solutions
The following are baby height measurements (in centimeters) of a sample of young infants participating in...
The following are baby height measurements (in centimeters) of a
sample of young infants participating in a study looking at
gestational age and growth rate. 30 35 25 37 52 61 35 39 29 41
56
What is the sample Median?
What is the variance rounding to 1 decimal point?
What is the 25th percentile rounding to 2 decimal places?
What is the 75th percentile rounding to 2 decimal places?
What is the interquartile range?
True or False: 60 is...
A sample of blood pressure measurements is taken for a group of adults, and those values...
A sample of blood pressure measurements is taken for a group of
adults, and those values (mm Hg) are listed below. The values are
matched so that 10 subjects each have a systolic and diastolic
measurement. Find the coefficient of variation for each of the two
samples; then compare the variation.
Systolic 116 128 156 95 155 124 118 135 124 121
Diastolic 82 76 73 51 91 87 57 62 71 82 1)
The coefficient of variation for the...
A sample of blood pressure measurements is taken for a group of adults, and those values...
A sample of blood pressure measurements is taken for a group of
adults, and those values (mm Hg) are listed below. The values are
matched so that 10 subjects each have a systolic and diastolic
measurement. Find the coefficient of variation for each of the two
samples; then compare the variation.
Systolic
120120
130130
157157
9494
154154
121121
114114
134134
126126
121121
Diastolic
8282
7676
7474
5353
9292
8989
5959
6262
7171
8383
The coefficient of variation for the systolic...
A sample of blood pressure measurements is taken for a group of adults, and those values...
A sample of blood pressure measurements is taken for a group of
adults, and those values (mm Hg) are listed below. The values are
matched so that 10 subjects each have a systolic and diastolic
measurement. Find the coefficient of variation for each of the two
samples; then compare the variation. Systolic 116 127 157 97 158
124 115 138 125 122 Diastolic 81 78 76 50 89 90 59 66 71 81 The
coefficient of variation for the systolic...
A sample of blood pressure measurements is taken for a group of adults, and those values...
A sample of blood pressure measurements is taken for a group of
adults, and those values (mm Hg) are listed below. The values are
matched so that
1010
subjects each have a systolic and diastolic measurement. Find
the coefficient of variation for each of the two samples; then
compare the variation.
Systolic
118118
128128
158158
9494
158158
122122
118118
138138
126126
122122
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Diastolic
8181
7676
7676
5454
8989...
In a calibration test, 50 measurements were taken of a laboratory gas sample that is known...
In a calibration test, 50 measurements were taken of a
laboratory gas sample that is known to have a CO concentration of
70 parts per million (ppm). A measurement is considered to be
satisfactory if it is within 5 ppm of the true concentration. Of
the 50 measurements, 37 were satisfactory. [5 + 10 points]
(a) Suppose it is desirable to estimate the population proportion
of satisfactory measurement within ±0.03, how big a sample of
measurements should be?
(b) Without...
A sample of size 30 is taken from a population and the height of each person...
A sample of size 30 is taken from a population and the height of
each person is recorded.
4.8 4.8 4.0 5.2 5.5 4.7 5.6 5.5 4.9 5.0 5.2 4.6 5.6 4.9 5.1 5.2
5.2 5.5 4.3
5.2 5.2 5.2 4.7 5.3 4.8 4.4 4.4 5.2 4.6 5.1
Construct a frequency distribution table with 6 classes.
Plot a histogram and explain the shape of the distribution
Compute the mean and standard deviation of the data, using the
frequency distribution.
What...
5. A Gulfstream Jet has a doorway height of 67 inches. If men have a mean...
5. A Gulfstream Jet has a doorway height of 67 inches. If men
have a mean height of 70.5 inches with a standard deviation of 2.9
inches and women have a mean height of 66.5 inches with a standard
deviation of 2.6 inches, what percentage of men and women can fit
through the door without bending over?
The ozone dataset gives a sample of ozone measurements (in partial pressures) taken over the South...
The ozone dataset gives a sample of ozone measurements (in
partial pressures) taken over the South Pole on September 18, 1997
at altitudes above 10km.
mPa:
1.828, 2.652, 3.307, 3.855, 4.021, 4.173, 4.316, 4.951, 4.787,
4.554, 4.333, 4.039, 4.48, 4.739, 4.791, 5.213, 5.75, 5.79, 5.656,
5.464, 5.092, 3.135, 2.754, 3.14, 5.213, 5.831, 5.736, 5.333,
4.797, 6.704, 6.493, 5.746, 6.31, 6.53, 6.63, 6.071, 5.706, 4.951,
4.392, 4.619, 5.029, 5.302, 5.151, 3.474, 3.285, 3.232, 3.4, 3.503,
3.649, 3.828, 4.235, 4.781, 5.096, 5.262,...
A sample of blood pressure measurements is taken from a data set and those values (mm...
A sample of blood pressure measurements is taken from a data set
and those values (mm Hg) are listed below. The values are matched
so that subjects each have systolic and diastolic measurements.
Find the mean and median for each of the two samples and then
compare the two sets of results. Are the measures of center the
best statistics to use with these data? What else might be
better?
Systolic Diastolic
154 53
118 51
149 77
120 87...
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