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The General Social Survey collects information on the number of hours worked by a respondent each week. The mean number of hours worked per week is 39.04, with a standard deviation of 11.51. The sample size is 83. Estimate the value of the standard error.
Does the Law of Large Numbers allow us to predict the proportion of heads that will turn up in the long run? After we have observed a large number of tosses, can we tell which coin was chosen? How many tosses suffice to make us 95 percent sure?
Ace used-car sales manager Jack has no idea whether the $100,000 he pays for training for his used car salespeople works. He asks Dave, the leading salesperson
if the test statistic for a difference of means test has a p-value of .03 we could reject the null hypothesis at an
What is the monetary certainty equivalent for the following gamble: gain $130 with probability 0.4, lose $320 with probability 0.6.
A coin is tossed three times. What is the probability of getting a head on all three tosses?
find the following percentiles for the standard normal distribution. interpolate where appropriate. round your answers
Identify and interpret the p-value for the test. Source: Andy Gardiner, "NCAA on Guard for ‘Rolled' Bats," USA Today, June 17, 2009, p. 8C.
a calculate a confidence intervals for p1 at 1 significance level. mu 395625 sd78550. are the confidence intervals
Conduct all 6 steps of the appropriate statistic. Be sure to label all six steps. b. Calculate and interpret the effect size for this test. c. Calculate and interpret any post-hoc test if necessary.
Suppose the following data represent thickness between and within silicon wafers (in microns), with a target value of 14.5 microns.
Develop a forecasting model, justifying its selection over other techniques, and project attendance through 2007.
I need to find the maximum and minimum surface areas for 2 cubes with a total volume of 432 in^3. No other perameters are specified. I've been able to use common sense to find the max is 432 sq/inches
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