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Late payment of medical claims can add to the cost of health care. An article reported that for one insurance company,85.1% of the claims were paid in full when first submitted. Suppose that the insurance company developed a new payment system in an effort to increase this percentage. A sample of 200 claims processed under this system revealed that 180 of the claims were paid in full when first submitted.
(a) At the 0.05 level of significance, is there evidence that the population proportion of claims processed under this new system is higher than the article reported for the previous system?
(b) Compute the P-value and interpret its meaning.
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
i have 100 units of a product in stock. the demand d for the item is a continuous random variable with the following
a researcher obtains an f-ratio with df 2 36 from an independent-measures research study. what is the total number of
What is the probability that the wait for the second student will be 15 minutes or less (to 4 decimals)? What is the probability that the wait for the second student will be between 15 and 45 minutes (to 4 decimals)?
Find the probability that the time taken for a randomly chosen customer to be dealt with by a cashier is more than 180s.
an urn contains one black and n-1 white balls. calls are drawn at random until the black ball is selected. find the
Construct a frequency distribution of the sample mean, and plot a histogram of this distribution. Use the central limit theorem to calculate and identify the sampling distribution of the sample mean.
question in a classic prisoners dilemma game with money for prizes players who cooperate with each other both earn
Use x for the number of bats and y for the number of balls made per week. The number of work-hours avaiable for construction and finishing is fixed.
Independently of the others. If the jury reaches a decision by majority rule, what is the probability that it will reach a wrong decision?
An official of the Iowa department of Highways wants to compare the useful life, in months, of two brands of paint used for striping roads. The mean number of months Cooper Paint lasted was 36.2
In a one factor ANOVA, there are 3 independent samples, with n1 = 10, n2 = 12 and n3 = 9. The calculated F-statistic is F = 3.31. At the 0.025 level of significance:Use the tables in the text to determine the critical value of the test.
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