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1. The director of marketing at Reeves Wholesale Products is studying monthly sales. Three independent variables were selected as estimators of sales: regional population, per capita income, and regional unemployment rate. The regression equation was computed to be (in dollars):
Y= 64,100 + .394X1 + 9.6X2 - 11,600X3
a. What is the full name of the equation?b. Interpret the number 64,100.c. What are the estimated monthly sales for a particular region with a population of 796,000, per capita income of $6,940, and an unemployment rate of 6.0 percent?
If the weight distribution is known to be normally distributed, do the data support the veterinarian's suspicion? Conduct a hypothesis test at the 5% significance level. Define your parameter (μ), state your hypotheses, conduct the test and write ..
It does not matter, when data are skewed mean and median are the same.
Suppose probability that person has desease is 0.06 for all people, independently of each other, and calculate expected number of tests essential for each group.
One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y?
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
What is the probability that of the last 100 new juvenile delinquents put on probation, 30 or more will commit another crime?
What type of shape would you expect the histogram of the sample size to have? What value would you estimate for the mean of the histogram of sample means?
Compute the number of French fries that would have to be sampled and measured to be 98% sure of being within 0.4 cm of the true mean.
State the hypotheses. (c) State the decision rule and sketch it. (d) Find the test statistic. (e) Make a decision. (f) Find the p-value and interpret it.
A gun is fired straight upward. The bullet leaves the gun at 1000 ft. per sec. The equation for the bullet's velocity is v = -32 t + 1000. What is the velocity at 3 sec.?
Linear correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance level alpha. n = 11, Alpha = 0.01
The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three plants.
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