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A weather forecaster predicts that the May rainfall in a local area will be between 1 and 7 inches but has no idea where within the interval the amount will be. Let x be the amount of May rainfall in the local area, and assume that x is uniformly distributed over the interval 1 to 7 inches.
a. Calculate the expected May rainfall
b. What is the probability that the observed May rainfall will fall within two standard deviations of the mean? Within one standard deviation of the mean?
Suppose the Total Sum of Squares for a design with k=6 treatments and n=36 total measurements (six per treatment) is equal to 500. In each of the following cases, conduct an F-test of the null hypothesis that the mean responses for the treatments are..
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study so that the two factors are smoking level and gender.
Each inspector makes his or her inspection at a different time. What is the probability that at least one inspector will find a defective widget?
Over the past few years, banks have strongly promoted online banking and the paying of bills online. In 2003, about 50% of internet users paid bills online.
annual maximum wind speed gusts have been modeled as both a type i gumbel and type ii largest extreme value. if the
These data represent the number of students attending a high school. Draw a line graph for the data.
A market analyst for the Weber Refrigerator Company has visited various appliance stores in a city to get data on the selling price of different brands of refrigerators. Estimate the population regression equation and interpret the result
The data are number of trials to learn to go left at the first turn in a maze for each of their 20 rats. Answer each of the four questions and don't forget to include a verbal statement of your interpretation of the outcomes.
a random sample of 45 door-to-door encyclopedia salespersons were asked how long on average they were able to talk to
where would you see descriptive statistics used in your work place? how would you define dependent and independent
Based on these data, does it seem that strength of relationship between sales and promotions expenditures is enough to permit using linear regression forecasting model? Describe why?
supposed 57 of the registered voters in a country are republican.if a sample of 722 voters is selected what is the
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