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Concepts and applications
Using the 68-95-99-.7 rule. Assume the resting pulse rates for a sample of individuals are normally distributed with a mean of 70 and a standard deviation of 15. Use the 68-95-99.7 rule to find the following quantities.
a. percentage of pulse rates less than 70
b. Percentage of pulse rates greater than 55
c. Percentage of pulse rates between 55 and 70
d. Percentage of pulse rates between 55 and 100
e. Percentage pulse of rates between 70 and 100.
comparing variationcalculating percentiles a data set consists of the 85 ages of women at the time that they won an
the sample mean and sample variance of five data values are respectively macrx 104 and s2 4. if three of the data
One suggested environmental determinant of pediatric lung function is the level of cigarette smoking in the home. A researcher wants to do a pilot study with two groups:
a school has three tenth grade classes. all three classes took the same physics test. the mean score for the three
3 cards are randomly selected without replacement from an ordinary deck of 52 playing cards. Compute the conditional probability that the first card selected is a spade, given that the second and third cards are spades.
Your financial advisor sees this and tells you there is a 100% chance XYZ stock will gain over the 2-month period. Would you continue to use this financial advisor? Explain.
Analyze the DT to determine the optimal strategy for the company. What is the expected value of the optimal strategy and what must be the selling price for the company to consider selling the rights to the product?
Run a Monte Carlo simulation 1000 trials for the following distribution. Determine the mean and standard deviation of the simulated distribution.
Determine the 90% confidence interval for average days worked by employees in all payroll departments?
The general social survey is an annual survey given to about 1,500 U.S. adults selected at random. Each year, the survey contains several questions meant to probe the respondents' views of employment.
an experiment was conducted to compare the weights of the combs of roosters fed two different vitamin-supplemented
The following table gives the number of U.S. families, in thousands, with pet dogs, pet cats, and pet birds, by size of family.
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