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A Study was conducted with α = 0.01 to determine if there is significant linear correlation between the number of credits hours earned at the same time of taking Statistic 101 and the grade in the course. Ten pairs of data were collected. The linear correction coefficient is r = 0.884
Choose the correct conclusion.
a) There is significant linear correlation
b) There is not a significant linear correlation
Determine the proportion of variation in grade that can be explained by the linear correlation between the grade and the number of credit hours earned at the same time of taking the course. _______________ (nearest hundredth).
Summarize the relationship between sample size and confidence level.
This table gives three measurements of 10 samples made in a production run. Use statistical process control method to solve problem.
At the .05 significance level, is the number of units produced on the afternoon shift larger?
Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that:
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
Evaluate z statistic for the Wilcoxon rank sum test, standard deviation for the Wilcoxon rank sum test and P-value for the Wilcoxon rank sum test
What is the probability that none can transact business in a foreign language?
Robinson & Associates performs employment screening for large companies in southern California. It usually follows two-step process. First potential applicants are given a test that covers basic knowledge and intelligence. If applicants score b..
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Based on the equation of the least-squares line, we use software to predict the average number of home runs hit per game per team for the year 2001. We obtain the following.
I have fit a line to data representing cholesterol readings for 28 individuals starting a cholesterol reducing drug. The computer provides the following output, The degrees of freedom for the t test for the slope are
Suppose that you select a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
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