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A certain brand of automobile tire has a mean span of 3500 miles and a standard deviation of 2000 miles. (assume the life spans of the tires have a bell-shaped distribution)
The life span of a randomly selected tire is 33160 miles.What is the x-z-score that corresponds to this life spans?
The life span of the randomly selected tie is 3300 miles, Using the Empirical Rule, find the precentile that corresponds to the life span.
Also include information about the number of participants you would assess and how you would go about estimating effect size and statistical power (when relevant).
In determining automobile mileage ratings, it was found that the mpg in the city (x) for a certain model is normally distributed, with a mean of 24 mpg and a standard deviation of 1.0 mpg. Find the following:
The faculty members at Boise State University were surveyed on the question "How satisfied were you with the Summer 2002 Schedule?" Their responses were to be categorized as "very satisfied," "somewhat satisfied," "neither satisfied nor dissatisfi..
Find a 90% confidence interval for the mean decibel level µ for this type of transit vehicle.
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
What is the best prediction for the number of products sold based on advertising costs of $7000?
We are certain the the average difference in reaction times between the two light types for all golfers is between 0.27 and 7.13.
Create a 95% confidence interval for mean cost of repairs. Interpret this interval.
What is the purpose of a post-hoc test with analysis of variance? What is probabilistic equivalence? Why is it important?
You want to know whether the population means are different in the two populations. Conduct an hypothesis test using an alpha of .05 and the critical value method.
Wildlife Hummingbirds Selasphorus sasin is the scientific name for what is commonly called "Allen Hummingbird" This beautiful hummingbird lives on the west coast of the United States and is named C.A. Allen
A local bank wants to install motion detector burglar alarms. Each has a 70% chance of detecting a burglar. If the bank wants to be 99% certain of detecting a burglar how many need to be installed?
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