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Use the following frequency distribution to determine the midpoint of the second class.
Class/ Frequency
4-12/ 6
13-17 /10
22-26/ 7
31-35/ 4
40-44 /8
49-53/ 5
If x is a binomial random variable where n = 100 and p = .1, find the possibility that x is less than or equal to 10 using the normal approximation to the binomial.
Her results (in hours until turning a particular shade of brown) are in the table below. At ∞= .01, did she see a difference between the two treatments?
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
What is the margin of error for a 95% confidence interval for the difference of the two means (low capacity - high capacity)? (Answer to the nearest hundredth.)
Describe the meaning of alternatives, criteria and states of nature. How are they utilized in decision analysis?
In which category is ANOVA properly classified?
Run a regression of Y on X in Excel and turn in the output with a note explaining what the coefficients {correlation coefficient (multiple R), standard error, t-statistic and F-statistic} mean.
At 95% confidence using the critical value approach, test to see if the percentage of defective systems produced by x-Game has exceeded the industry standard.
Set-up/solve the problem graphically. (How many ceiling fans and how many floor fans should be made?)
Does the overall data support the mayor's claim?
The largest value in a set of data is 160, and the smallest value is 70. If the resulting frequency distribution is to have six classes of equal width, what will be the class interval?
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