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a) Given a random variable x with mean 10 and variance 9, find the expected value and variance of the random variable y where y = 12 + 2x.
b) A random variable x has E[x]=5 and Var(x)=9. A random variable y, independent of x, has E[y]=10 and Var(y)=25.
A researcher working with socioeconomic data showed a significant positive correlation between the number of local hospitals and the life expectancy.
Find the mean, median, and mode of the processing times. Interpret the differences between them.- Compute the range, variance, and standard deviation of the processing times and interpret them.
Critically discuss the difference among strategic, long-term, and short-term objectives? What is the relationship between objectives and goals? What are examples of this relationship?
Which option produces the smallest risk of a Type I error?
Weight of the .5 cubic yard bag of landscape much is normally distributed with mean of 40 pounds and standard deviation of 1. Determine the probability that the bag will weigh more than 40 pounds?
Servings of water is approximately normally distributed with a standard deviation of 1.4 serving, what proportion of americans drink a. more than the recommended 8 servings.
a metropolitan school system consists of three school districts-norths south central. the north district contains 25 of
A word document containing answers to the questions below only including appropriately labeled and formatted supporting tables and graphs ~ 120 points
why is the coefficient of correlation an important tool for statisticians? provide some specific examples from real
Find the mean, variance, and standard deviation of the number of patients assigned to each nurse.- Find the probability that the number of assigned patients is greater than one standard deviation to the right of the mean.
Assume that the significance level is a= 0.1. Use the given information to find the p-value and the critical value (s). With H1: p = with line through it 1/2 the test statistic is z= - 1.35
Conduct a hypothesis test to determine if the proportion of traffic accidents is the same for each day of the week. What is the p-value? Using a .05 level of significance, what is your conclusion?
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