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A large company that produces allergy medications claims that Americans lose an average of 40 hours of work to problems related to seasonal allergies. A consumer advocacy group believes that this claim is actually just "hype" intended to sell more medication. The advocacy group would like to obtain statistical evidence about this issue and takes a random sample of 100 American workers. They find that these 100 people lost an average of 38 hours with a standard deviation of 9.5 hours. What is the P-value for this significance test?
A) 0.98
B) 0.50
C) 0.04
D) 0.02
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
Compare the two forecasts computed in (a) and (b), using MAD. Which one should the dealer use for January of the next year?
What are the possible combinations of coins that Sanjay could have received in change?
Compute fraction of the employees cost between $1,500 and $2,000 per year? Evaluate percent that didn't have any dental expense.
Subjects at both sites were classified as dropouts if they left the study before the conclusion, or completers if they finished the study
Is the hot-air balloon significantly shorter than light rail? How can you tell? What do you tell university officials?
How likely is it that the store owner will make at least $7,000 if she implements your suggestion?
What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?
Below are one hundred pseudorandom numbers from a uniform pdf. Set up and test the appropriate goodness-of-fit hypothesis. Let α = 0.05.
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
Based on these data, explain whether or not course attendance had any effect on determining of a restaurants violation of health code.
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