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How do I break-down this problem to find the best possible answer? What is the 68-95-99.7 rule?
The systolic blood pressure of a group of 18-year-old women is normally distributed with a mean of 120 mmHg and a standard deviation of 12 mmHg. What percent of 18-year-old women in this group have a systolic blood pressure between 108 mmHg and 132 mmHg?
Average performance evaluation is higher for managers hired from outside firm compared with those promoted from within? What other stories does this graph tell?
A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data: (38.02, 61.98) and (39.95, 60.05). What is the value of the sample mean?
For sample of size 100, what is the mean and standard deviation of the sample mean.
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
Determine the highest number of miles (to nearest whole number) that motorist could drive in month and still qualify for discount?
Standard deviation of 7. At 0.01 significance level, is there more variation in first population?
Find the value for the correlation coefficient r.
A bookcase contains 3 statistics books and 4 biology books. If 2 books are chosen at random, find the chance that both are statistics books.
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
Many people think that job satisfaction in workplace is directly related to annual income. To check the validity of this assumption survey of 430 active working adults in U.S was taken that relates their job satisfaction to their annual income.
Determine the likelihood of accepting a lot which is 1% defective?
Strongly support, support, no opinion, do not support, strongly do not support. The number of people in each category was recorded.
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