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With a 98% level of confidence a company producing street signs wants to make sure the length of their product is meeting quality standards.
Error of 1cm and the production manager knows that the Standard Deviation 6cm. How many signs does he need to sample?
Muscular dystrophy is an incurable muscle-wasting disease. The most common and serious type, called DMD, is caused by a sex-linked recessive mutation. Specifically; women can be carriers but do not get the disease; a son of a carrier has probabili..
Below are scores for 10 randomly selected students on each exam. 95% confidence interval for the mean scores on?
Fit a least squares trend line to the merger data. What type of trend (linear or curved) might best fit to this time series? Compute the forecast for year 20 based on the trend (linear or curved) that best fits the data?
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
In a binomial distribution n = 8 and π = 0.2. Determine the probabilities of the following events.
The travel time for a college student traveling between her home and her college is uniformly distributed between 40 and 90 minutes.
He would like to determine whether there are more units produced on the afternoon shift than on the day shift.
A population consists of 15 items, 10 of which are acceptable. In a sample of 4 items, what is the probability that exactly 3 are acceptable? Assume the samples are drawn without replacement.
A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion.
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
Describe a scenario related to the final project in which you would use repeated-measures ANOVA. Describe a scenario related to the final project in which you would use MANOVA.
Determine her weighted mean grade? What letter grade did she earn? (A, B, C, D or F).
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