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(a) Consider the data for Problem 6 about the relationship between smoking and lung cancer. Translate these scores to ranks and compute rS,the Spearman coefficient.
(b) Pearson's r for these data is .74. Does this agree with the rS you calculated? Explain.
Marentette and El-Masri (2011) used logistic regression to identify predictors of obtaining seasonal influenza vaccination among hospital-based nurses in Canada. Their results are shown in table 1:
The data for each of the following variables includes one or more outliers. In each case, identify the outlier(s).
Explain why the distribution of ideal weights is likely to be bimodal if men and women are both included in the sample.
Determine how large a random sample one must take of a random variable uniformly distributed on the interval 0 to I in order
What is the average number of callers waiting to place an order? (c) Ashleys is considering adding a second clerk to take calls. The store would pay that person the same $ 10 per hour. Should it hire another clerk?
Suppose that a group of 48 students who took the SAT was chosen. If you wanted to calculate a probability for the average SAT score for these 48 students, what is the standard error.
What are the singleton subsets of X and Y? are the empty set and the sample space the singleton subsets?
Develop a scatter diagram with price as the independent variable and what does the scatter diagram developed in part (a) indicate about the relationship between the two variables?
The Aloha Banking Co. is studying ATM use in suburban Honolulu. A sample of 30 ATM's showed they were used the following number of times yesterday.
The average height of young adult males has a normal distribution with standard deviation of 2.5 inches. You want to estimate the mean height of students.
Assume the variable is normally distributed. If an individual is selected, find the probability that the individual's pressure will be between 120 and 121.8 mmHg.
A person born in 1964 is equally likely to live for any (not necessarily integer) number of years between 1 and 100. find the conditional probability P(T >80|T>50)
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