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Find the whether the given correlation is significant at given level of significance.
(A) Is sample correlation coefficient r= 0.820 significant at =0.01level based on a sample size of n = 7data pairs? What about n =9 data pairs?
(B) Is a sample size correlation coefficient r =0.40 significant at = 0.05 level Based on sample size of n=20 data pairs? What about n=27 data pairs?
(C) Is it true that in order to be significant, an r-value must be larger than 0.90? Larger than 0.70? Larger than 0.50? What does sample size have to do with the significance of r? Explain.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
We want to test the hypothesis that the population variances are equal.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
Multiple comparison procedures are going to be done using the Bonferroni method with α = 0.10. The value of t** is 2.2426. The smallest minimum significant difference (MSD) for finding a difference between groups is computed as 17.68. The correct ..
Survey on What do you think is the biggest problem facing education today. One problem with exit polls may be that the wrong "key precincts" were chosen.
If a single test is run and indicates that oil is present, what is the revised probability that oil is actually present?
Find out the value of test statistic utilizing one sample proportion testing. Use the subsequent information for the below questions.
Find the area under the normal distribution curve to the right of z = -1.03.
A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
What is your conclusion? Are the two variables independent?
Calculate (rounded to the nearest tenth) The correlation between IQ and Anxiety r =??
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