Chapter 7: Q.26 (page 429)
True or False: only the sums of normal distributions are also normal distributions.
Short Answer
The given statement is false.
Chapter 7: Q.26 (page 429)
True or False: only the sums of normal distributions are also normal distributions.
The given statement is false.
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Get started for freeA manufacturer produces -pound lifting weights. The lowest actual weight is pounds, and the highest is pounds. Each weight is equally likely so the distribution of weights is uniform. A sample of weights is taken.
Find the percentile for the mean weight for the weights.
Based on data from the National Health Survey, women between the ages of and have an average systolic blood pressures (in mm Hg) of with a standard deviation of Systolic blood pressure for women between the ages of to follow a normal distribution.
a. If one woman from this population is randomly selected, find the probability that her systolic blood pressure is greater than .
b. If women from this population are randomly selected, find the probability that their mean systolic blood pressure is greater than .
c. If the sample were four women between the ages of to and we did not know the original distribution, could the central limit theorem be used?
A uniform distribution has a minimum of six and a maximum of ten. A sample of is taken.
Find the first quartile for the sums.
Find the percentage of sums betweenstandard deviations below the mean of the sums and one standard deviation above the mean of the sums.
What is the mean, standard deviation, and sample size?
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