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At one time, the cholesterol levels for women aged 20 to 34 follow an approximately normal distribution mean 185 milligrams per deciliter (mg/dl) and standard deviation 39 mg/dl. What proportion of women aged 20 to 24 have cholesterol levels above 175.
A. 0.5987
B. 0.6026
C. 0.9013
D. 0.76
Use this information to develop a 95% confidence interval to estimate the production variance for the hourly wages of production workers in U.S. What is the value of upper limit of this confidence interval?
construct a frequency distribution table and describe the shape of the distribution, what score identifies the center for the distribution and are the scores clustered or spread across the scale?
A sample of students attending Southeast Florida University is asked the number of social activities in which they participated last week. The chart below was prepared from the sample data.
With a selling price of 40 dollars each, how many pool cues must be sold to break even? What would the total revenue be at this break even point?
For each of the following, identify the scale of measurement (NOIR) and the best measure of central tendency for the data.
Construct a 95% confidence interval for the true difference in population proportions of high LDL (p1-p2) between female and male populations.
How large could a tumor grow before a researcher might consider it to be an outlier and would want to double check the measurement.
Is the dependent variable discrete or continuous? interval, or ratio) is used to measure the dependent variable?
The normal distribution witha population standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CD's sold by CRA CD's Inc.?
in my office we have 20 men and 35 women. the board of directors is going to appoint four new positions president vice
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
a regression line was calculated as y 42.5 3.1 x. what is the predicted value of y when x 2.5
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