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For the leading health maintenance organization (HMO) firms, data file XR15014 lists the number of persons enrolled in the HMO along with the number of plans the firm administers. Given these data, determine the least-squares equation for predicting the total enrollment as a function of the number of plans administered. (SOURCE: The Wall Street Journal Almanac 1999, p. 565.)a. The estimated intercept is 510653b. The estimated slope is 125388.5c. The estimated total enrollment for an HMA firm that administered 20 plans is __________ persons.
nterpret the meaning of the y-intercept, b(0), and the slope, b(1), in this problem. Use the prediction line developed in (a) to predict the GPA for a student a GMAT score of 600
In this group four were African American, 6 were hispanic, and one was Asian. Was this a good sample on which to norm this test? why or why not? What are your suggestions?
Furthermore, it takes about two weeks for an order to arrive from the supplier. What is the average inventory? What is the annual holding cost?
For the events A and B, if (A∩B)' =S (where S, of course, is the sample space), then the events CANNOT be mutually exclusive.??b. In a confidence interval for the difference between n matched pairs of observations, the t-distribution to use is with 2..
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people, with 10 having a common attribute.
Suppose you are waiting for your federal tax refund. On average, how many weeks would you have to wait before receiving your refund?
The accounting association has 15 members, 10 of which are CPAs. The members are to be selected to study ways to increase membership. What is the probability of all three selected are CPAs?
The manager of a paint supply store wants to determine whether the mean amount of paint conatined in 1- gallon cans purchased from a nationally known manufacturer is actually 1 gallon.
Let f:N x N -> N be the function defined recursively as follows: Use induction on the sum i + j to prove that f(i, j) = 2i + j + 6 for all (i, j) in N x N.
By using the results in (a), construct a boxplot. Indicate clearly on the boxplot the five-number summary. Are the data skewed? If so, describe its skewness.
Three unrelated people go for dinner to a Chinese restaurant which uses MSG in its food. Each person has a 10% probability of developing an adverse reaction to the MSG.
At the 0.05 level of significance, do the samples provide sufficient evidence to indicate that on the average, fewer consumers prefer a new product when the spokesperson is male?
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