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One objective of this course is learning how to correctly interpret statistical measures. This includes learning how to identify intentionally misleading statistics. For this week's activity create your own example of a misleading statistic. Explain the context of the data, the source of the data, the sampling method that you used (or would use) to collect the data, and the (misleading) conclusions that would be drawn from your example. Be specific in explaining how the statistic is misleading.
What are the null and alternate hypotheses? How many treatments are there? What is the critical value of F at the 5% level of significance? Indicate in words when you would reject the null hypothesis.
The delivery times and the number of cases delivered were recorded in the delivery file: Develop a regression model to predict delivery time, based on the number of cases delivered.
A general contractor is considering purchasing lumber from one of two different suppliers. A random sample of 12 "2x4's" of a certain length of each board is measured.
Normally distributed with a mean of $ 1750 and a standard deviation of 300. What's the probability that a randomly selected state has a per capita GNP at or below $950?
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49. Change the number from 49 to 16 and recalculate the confidence interval. Using results, explain the effect of an outlier or extreme ..
Probability of survival of eggs to breeding adults at the next time step is 0.4. Probability of survival of adults to the next time step is 0.7. What is average R?
There are 4 samples of 40 individuals each interviewed to find out how often they visit a fast food restaurant in the week.
Probability of selecting a graduating college who had given blood that percent of the time. What is the mean number of times a person gave blood based on this poll?
A trucking firm suspects that the mean lifetime of a certain tire it uses is less than 35000 miles. To check the claim the firm randomly selects and test 54 of these tires and gets a mean lifetime of 34,570
A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Holiday Inn.
Flight for which a maximum number is 78, what is the probability that the number of people who show up will exceed the capacity of the plane.
Determine the probability that 5 or less questionnaires will be returned? Compute also probability that 7 or more questionnaires will be returned.
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