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1. Write a short report dicussing the claim that average diastolic blood pressure in 1958 (variable dbp58) is the same for men who were alive in 1968 and for men who were not (variable vital10).
2. There is one man with a diastolic blood pressure of 160 mm HG. How does your conclusion change? What can you conclude about the effect of outliers on the results of a t test?
3. Test the null hypothesis that average diastolic blood pressure is the same for men who smoke and for men who don't smoke. Write a paragraph summarizing your conclusions. Be sure to consider the effect of the outlier on the results.
For a disease such as pancreatic cancer, which is highly fatal and of short duration:
Explain the logic of the ordinary least Square (OLS) method? How are the least squares formulas for the slope and intercept derived?
Construct a 95% confidence interval estimate for the population proportion of adults who report that e-mails are easy to misinterpret.
A confidence interval increases in width as:
A company's headquarters is located in downtown Chicago. The company is interested to know the mean driving time of its employees if they require their employees to start working at 6:00 am. Fifty employees are randomly sampled over four weeks and..
The dean of the Western College of Business must plan the school's course offerings for the fall semester. Students demands make it necessary to offer at least 30 undergraduate and 20 graduate courses in the term. Faculty contract also dictate tha..
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
Credit card companies use a scoring model to determine the credit worthiness of a prospective card holder. Factors such as income, employment, home ownership, and credit history determine one's score.
Of the adults in Jefferson County, 10% have had CPR training
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
John, a medical practitioner at a private medical facility, is discussing the problem that one of his patients, Tom, says he has been having with the medication that the doctor has prescribed.
A study is conducted to determine if the traffic light patterns at a busy intersection need to be adjusted to help the flow of traffic. Data on the volume of traffic and the traffic patterns during different times of day are recorded.
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