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A Correlation matrix (correlation, coefficients and probability level under the hypothesis rho= 0) for a company's sales force (age, years of service, and current sales) is given below. Comment.
Age
Years of Service
Current Sales
1
0.68185
0.21652
0
0.0208
0.5225
0.64499
0.0321
Use a 5% significance level to test the claim that there appears to be a difference in the effectiveness of the two diets.
Distinct random variable
Determine the value of correlation coefficient between these 2 variables?
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 5 of µ? Use the value 20 for the population standard deviation of scores on this subsection.
We are asked to test for independence between age (i.e., adult and teen) and drink preferences.
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments.
An SRS of 100 of a certain popular model car in 1993 found that 20 had a certain minor defect in the brakes. An SRS of 400 of this model car in 1994 found that 50 had the minor defect in the brakes. Let p1 and p2 be the proportion of all cars of t..
Find the probability that a randomly selected employee earns less than $5.43.
Construct a 98% prediction interval for the selling price of a 4l- year old house having 4500 square feet, 13 rooms, and an attached garage.
Find the probability that in a given month:
If 25 men aged 18-24 are arbitrarily chosen, determine probability that their mean serum cholesterol level is between 165 and 200.
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