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1. Suppose there are 1885 players in Major League Baseball and 55% of these players have college degrees. If you select a simple random sample of 90 players, what is the probability that between 45% and 70% of the sample players will have a college degree?.
2. An Internet retailer wants to sample its customer base to determine the percentage who are married with children. How many customers should they survey if they want to have 98% confidence and be within 3% of the true population proportion?
3. The average weight of football players on a team has been computed to be 235.5 pounds with a standard deviation of 30.5 pounds. What is the probability that a random sample of 100 players will weigh more than 24,000 pounds?
Explain how you would use these 100 volunteers in a designed experiment to test the vaccine. Include all important details of designing the experiment.
Put this in the context of a hypothesis test. What are the null and alternative hypotheses?- What would a Type I error mean?
cynthia has ordered 3 identical computers for the office. the probability this make and model of computer crashes
A random sample of the price of gasoline from 20gas stations in a region gives the statistics below. Complete parts a) and b) ybar = $3.59, s = $0.24 a) Find a 95% confidence interval for the mean price of regular gasoline in that region. __, __ (R..
Calculate the measures of central tendency, dispersion, and skew for your data. Display your descriptive statistical data using graphic and tabular techniques.
What is the probability that the total phosphorus is less than 13 mg/liter?- What is the probability that the total phosphorus differs from the mean by more than 5 mg/liter?
researchers studied the effects of adding an exercise program to dieting in the achievement of weight loss. a sample of
Ninety-eight heterosexual couples, at least one of whom was HIV- infected, were enrolled in an HIV transmission study and interviewed about sexual behavior.A summary of condom use reported by heterosexual partners. How strongly do the couples agre..
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
Write out the statistical model for this analysis, making sure to specify all assumptions.- Run the multiple regression model and specify the fitted regression equation.
there is a 0.0724 probbability that a best-of-seven contest will last four games a 0.2115 probability that it will last
Criticize the following definitions in light of the eight rules for lexical definitions:- Tobacco is a plant grown in the southeastern United States that, when enjoyed in the form of cigars and cigarettes, produces a most delightful and satisfying ..
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