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Class:
There are many different types of variables:
Continuous vs discrete
and
Quantitative vs. Qualitative.
Pick one of the 2 groups and explain the difference between the two types within the group?
a sample of 344 subscribers of time magazine shows the mean time spent using the internet is 14.4 hours per week
Discuss the underlying causes that might explain the trend. (c) Use Excel, MegaStat, or MINITAB to fit three trends (linear, quadratic, and exponential) to the time series.
A new diet program claims that participants will lose more than 15 pounds after completion of the program. The following data represents the before and after weights of nine individuals who completed the program. Test the claim at the α = 0.05 lev..
The distribution of sample means? Compute the z-score for M=89 for a sample of n=25 scores. Is this sample mean in the middle 95% of the distribution?
In fact, you don't get an amount starting with an 8 or 9 until the 40th invoice. Do you suspect that the invoice amounts are not genuine?
Test, at the 10% level of significance, whether the data provide sufficient evidence to conclude that the average starting salaries are different.
an insurance agent says the standard deviation of the total hospital charges for patients involved in a crash which the
a company fills bags with fertilizer for retail sale. the weights of the bags of fertilizer have a normal distribution
suppose that the mean of the annual return for common stocks from 2000 to 2012 was 14.37 and the standard deviation of
Investigate the hypothesis that the breakage rate for the new process is the same as the rate for the old process by carrying out a X2 test of goodness-of-fit.
Recall that a Radon measure on R is a function µ into R, defined on all bounded Borel sets and countably additive on the Borel subsets of any fixed bounded interval.
From this software output, write the regression equation.- As depression at year 1 increases by 1 point, what happens to the predicted anxiety level for year 3? Be specific.
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