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A copy machine repair company claims that its average repair cost is less than $100. To check this claim, a simple random sample of 30 repairs made by this company is taken. The sample average is $97, and the SD is $17. Assume that the repair cost has a normal curve.What is the null hypothesis?
Will the margin of error for estimating the population proportion change from state to state if an SRS of 4000 tax returns is selected in each state?
Probability using Pareto chart - Evaluate the probability of randomly selecting an adult from the sample who doesn't always eat healthy foods because he or she has no time to cook or is confused about nutrition.
A certain researcher thinks that the proportion of women who say that female bosses are harshly critical is greater than the proportion of men.
The average hourly wage last year for members of the hospital clerical staff in a large city was $6.32. The standard deviation of the population was $.54. This year a sample of 50 workers had an average hourly wage of $6.51. Test the claim at alph..
Bbut only 1 percent of those closed will have something stolen. If a garage is robbed, what is the probability the doors were left open?
Address additional types of quantitative research recommendation to enhance the validity and reliability of the research findings.
Find an integer k that the probability is at least .99 that you will find k invoices that overcharge the customer. Use trial and error with the BInomdist function to find k.
Would the resulting sets of data represent dependent or independent samples? Why? What could the students change in the project to have it represent the other?
How many different combinations of the clients could be considered for inclusion into his limited schedule for that day?
A new process for producing synthetic diamonds can be operated at a profitable level only if the average weight of the diamonds produced by the process is greater than 0.5 karat.
How many individuals will it need to sample to achieve this level of accuracy and confidence?
The wheat harvesting season is short. Farmers deliver their truck loads of wheat to a giant central storage bin within a two-week span. Because of this, wheat-filled trucks waiting to unload and return to the fields have been known to back up for ..
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