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The average weight of an airline passenger's suitcase is 45 pounds. The standard deviaiton is 2 pounds. If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
Assume adults have IQ scores that are normally distributed with a mean of 105 and a standard dviation 20. Find the probability that a rondomly selected adult has an IQ betwwen 93 and 117.
The following table is based on information taken from the Medical Practice Characteristics section of the Statistical Abstract of the United States
Make a histogram showing the probabilties of r = 0, 1, 2, 3, 4, 5, 6, 7 or 8 defective syringes in a random sample of 8 syringes.
What is the 99% confidence interval for the true proportion of all e-mail subscribers that opened the e-mail within 24 hours of receiving it?
Two balanced dice are rolled and the number of dots facing up is added. Find the probability that the sum is 10 or 12.
Consumer Reports magazine tested paints. The table below shows the overall quality score and cost in dolllars per gallon. Test for a correlation. Based on these results, do you get better quality paint by paying more?
To be 99% sure that we will not be late in completing the project, what is the requested completion time in work-days?
Does this data provide evidence at the .05 significance level that there is a difference in the proportion of humorous ads in British versus American trade magazines? Please show work.
Carry out an ANOVA and describe in detail in a BPS-formatted Results section:
Team Marketing Report, a sports-business newsletter, estimates that the average total cost for a family of four to attend a major league baseball game is $132.
Calculate the MEAN and STANDARD DEVIATION for the distribution below:
Critically illustrate out the limitations of seasonal forecasting? Provide examples.
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