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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.
Determine the probability of having more than 3 defects in a roll?
Population of consumers where 30% of them favored a new product and 70% of them disliked it. If 20 persons are sampled, what are the probabilities of finding: Binomial
Compute the 95% confidence interval for the population proportion of registered voters who favor the slow growth initiative.
Night games and 90 percent of their day games. According to today's newspaper, they won yesterday. What is the probability the game was played at night?
Determine point estimate of population mean? By using 90% confidence, determine the margin of error?
The average monthly electric bill of a random sample of 256 residents of a city is $90 with a standard deviation of $24.
For the population with standard deviation of σ =10 a score of x=44 corresponds to z= -0.50. Determine the population mean?
A prison official wants to estimate the proportion of cases of recidivism. In examining 250 convicts there are 65 cases. with 99% confidence interval what is the range? How do you figure this type of problem?
Let X be the number of tumors in a fish living in a river. Suppose that it has the following probability mass function f(0) = 0.9 f(1) = 0.7 f(2) = 0.02 f(3) = 0.01 A random sample of size n = 30 is selected from this population. Approximate the p..
I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
A consumer electronics firm has developed a new type of remote control button that is designed to operate before becoming intermittent.
Possible test scores could range from 0 to 500. Assume that the scores are normally distributed. Find the probability that a student had a score higher than 320.
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