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The manufacturer of a nationally known "lite beer" claims that the approval rating for it's product is at least 85%. A local soft drink manufacturer has retained a marketing agency to test the "lite beer". A sample of 500 individuals participated in the test nationally. Out of the sample of 500, 100 indictated that they did not like the taste. Test the hypothesis the approval rating is at least 85% at the 0.10 level of significance.
What is the probability of finding 1 or more children with chronic bronchitis in a population where the incidence rate of chronic bronchitis is 10% (like the one above?)
A student with a 3.5 to 4 grade point average who took standardized test is randomly selected. Determine the probability that students test score is less than 36.
Delta Airlines quotes a flight time of 2 hrs, 5 minutes for its flights from Cincinnati to Tampa. We belive that actual flight times are uniformly distriubted between 2 hours and 2 hours 20 minutes.
The starting salaries of individuals with an MBA degree are normally distributed with mean of $40,000 and standard deviation of $5,000. What percentage of MBA's will have starting salaries of $34,000 to $46,000?
A certain medication is known to increase the pulse rate of its users. The standard deviation of the pulse rate is know to be 4 beats per minute. A sample of 40 users had an average pulse rate of 98 beats per minute. Find the 95% confidence interv..
Create raw score predictions on criterion variable for persons with Z scores on predictor value of -2,-1,0,+1,+2.
Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
Explain the purpose of the chi-square test for independence. Provide some practical examples where this test might be used in business.
In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made 153,348 runs and had 20 accidents
Mention your decision regarding the null hypothesis. If H 0 rejected can we conclude that treatment 2 and treatment 3 differ? Use 95 percent level of confidence.
The mean of a sample is 22.5. The mean of 1000 bootstrapped samples is 22.491. The bias of the bootstrap mean is
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