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The probability that a person owns a car P(Car) = 0.80, that a person owns a boat P(Boat) = 0.30, and that a person owns both a car and a boat P(Car and Boat) = 0.12. Find the probability that a person owns either a boat or a car P(Car or Boat).
the 92 million americans of age 50 and over control 50 percent of all discretionary income aarp bulletin march 2008.
Find the critical value for different types of sample size and level of significance:
The mean numbers of trials to learn maze for the group with the colrful wallpaper is 11. What is the standard deviation of the distribution of means?
The main purpose of this exercise is to check your understanding of significance level, p-values and power .
A government worker claims that the standard deviation of the mean weight of all US Postal Service shipments is 0.40 pounds. If a hypothesis test is performed, how should you interpret a decision
Are X and Y independent?
For any hypothesis test, if the value of a parameter being tested falls outside the confidence interval for the same level of a, the correct decision is to reject the null hypothesis. Is this True or False?
Calculate the standard deviation of BMI. Calculate the median BMI. The following are body mass index (BMI) scores measured in 12 patients who are free of diabetes.
Should H0 be rejected? What should the researcher conclude and determine the 95% confidence interval for the population mean, based on the sample mean.
Any state auto insurance company took a random sample of 370 insurance claims paid out during a 1-year period. the average claim was $750 with a standard deviation of $150. find .99 confidence interval for the mean claim payment.
Utilizing the chart parameters developed above to define the control charts for future candy bar production, Compute the appropriate plotting points from the data.
A sample of 144 cans of coffee showed an average weight of 16 ounces. The standard deviation of the population is known to be 1.4 ounces.
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