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1. One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic. A partial ANOVA table is
The F statistic for the ANOVA is F = 51.86. The P-value for the test isA. p > 0.01.B. 0.001 < p < 0.01.C. p < 0.001.
2. One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
Minitab computes pairwise confidence intervals for the difference in the means as
Tukey's pairwise comparisons
What conclusion do we make about the three group means?A. All the means are the same.B. All the means are different.C. Groups 0 and 2 are similar; Group 1 is different.
Assume that a random variable, x, is distributed according to a normal distribution with mean 46 and standard deviation 12. (a) What is the standard error of the estimate, x-bar, if a sample of size 25 is taken?
Test the hypothesis that the true Pearson correlation (p) is significantly different from zero. Provide a (p) value (two-tail) n=12. Correlation intake is .448 for the two recording methods.
Consider a finite size population for N in which you want to study a variable y that takes a very small value for the first element of the sampling frame
Two fair six-sided dice are tossed independently. Let X be value of first die, and Y value of second. Find out the expectations of following random variables.
What is an estimate of the proportion defective for the piston manufacturing process when it is control? Construct a p chart for the manufacturing process, assuming each sample has 200 pistons.
Give a 99% confidence interval for the proportion of all U.S. adults who attended church or synagogue during the week preceding the poll.
Critique the HR manager's planned approach and give him advice on how to proceed. You can assume that a reasonable estimate for the proportion of new hires that are happy with the company is .8.
Ace Jack had no idea whether the $100,000 he pays for training for his used car salespeople works.
the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test.
Assume the standard deviation is $160 and that the amount spent is normally distributed. What is the probability that the amount spent on a randomly selected child is more than $700?
The other measurement is below 10, i.e. where high measurements tend to cancel low measurements. Use these possibilities to compute the distribution of when n = 2(i.e., find , , etc.).
Instructions: Perform the 5-step hypothesis testing procedure, HERE ARE THE STEPS THAT NEED TO BE FOLLOWED & THE RAW DATA IS BELOW. Hypothesis Testing Steps given
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