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A ski company in Vail owns two ski shops, one on the east side and one on the west side. Sales data showed that at the eastern location there were 56 pairs of large gloves sold out of 304 total pairs sold. At the western location there were 145 pairs of large gloves sold out of 562 total pairs sold.
The sample proportion of large gloves for each location is and . (Round your answers to 4 decimal places.)
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
The amount ($1.00, $5.00, $10.00, $25.00, or $50.00) promised to each person was determined by randomization. For each person who was sent one of the surveys, The value of the X2 test statistic for testing the hypothesis
Determine a 95 % confidence interval for the iron concentration.
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
Why might driver be tempted not to use seat belt "just on this trip"?
How likely is it that the store owner will make at least $7,000 if she implements your suggestion?
For the 20 test scores shown, find the percentile rank for a score of 86.
In what height interval must the company expect to determine middle 70% of kindergarteners?
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call?
Is there evidence of difference in median performance between two methods? (Use α = 0.05.)
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