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1. Compute Pearson's r between the life satisfaction variable and the family income variable in Table 1. Test the r for statistical significance, and draw conclusions about the meaning of the test.
2. Compute a Pearson correlation coefficient between the age and the family income variable using the data in Table 1. Then compute the correlation again, deleting the individual with the very extreme income of $2,800,000. Notice how the presence of outliers can influence the correlation coefficient.
3. Compute the correlation between age and family income again using only the individuals in Table 1 who have an income less than $30,000. Again, notice how the correlation coefficient changes.
suppose bar-x is 67 ho mean 50 and ha meangt50. the p-value from the one-sample z-test is 0.03. the p-value meansa.
question we are comparing two software packages one existing and one new software. ten sets of computations are run by
the amount of cola in a 12-ounce can is uniformly distributed between 11.96 ounces and 12.05 ounces.a. what is the mean
give and describe an example of an ordinal measurement
Wentworth Medical Center text
Find the probability that the first ace is drawn on the 5th selection. - Find the probability that at least 5 cards are drawn before the first ace appears.
consider the sampling designs provided below. for each sampling design indicate whether or not the sampling is flawed.
Define a proper fraction, improper fraction, and a mixed number. Why may we want to express a number as a mixed number rather than as an improper fraction?
Media Disk, Inc. duplicates over a million 3.5" floppy disks each year by copying masters to stacks of blank disks. The company buys its blank stock from two different suppliers, A and B.
Obtain a graphical representation of the relationship and give a brief description of the relationship and estimate the simple regression line and interpret the estimated relationship.
the probability that a small business will go bankrupt in its first year is 0.21. For 50 such small business, find the following probabilities by using either the binomial probability formula or by using the normal approximation.
the us department of education reports that 46 of full-time college students are employed while attending college. a
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