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Question: There are three cards in a box. Both sides of one card are black, both sides of one card are red, and the third card has one black side and one red side. We pick a card at random and observe only one side.
a) If the side is black, what is the probability that the other side is also black?
b) What is the probability that the opposite side is the same color as the one we observed?
The data show that 48 of the doctors picked Brand X. If these data are evaluated using a chi-square test for goodness of fit, what is the expected frequency for Brand X?
Compare value of test statistics F obtained in part(2) with value of t 2 , square of test statistic for testing H 0 : β 1 =0 that was needed in test null hypothesis that true slope is 0. Interpret the results of this test.
Population standard deviation of 150. If you take a random sample of n = 8 students, what is the probability that the sample mean will be more than 760?
companies that do business over the internet can often obtain probability information about web site visitors from
1. each supplier is rated on a 10-point scale 10 highestfor four different criteria price quality delivery and
the fracture strength of tempered glass averages 14 measured in thousands of pounds per square inch and has standard
Thirty-five fourth-grade students were asked the traditional question "what do you want to be when you grow up? The responses are summarized in the following table:
A random sample of 17 wolf litters in Ontario, Canada gave an average of x1= 4.9 wolf pups per litter, with estimated sample standard deviation s1 - 1.0.
A researcher determines that 42.7% of all downtown office buildings have ventilation problems. Is this a statistic or a parameter; explain your answer.
What is the z-value that was used in the computation. Round your z-value to 2 decimal places and difference in the mean carbohydrate content between the Corn Chip and Potato Chip groups.
If a worker is chosen at random, what is the probability that he or she.Is very improbable to switch jobs. Is somewhat likely or very likely to switch jobs.
Florida State University administers a test of mathematics placement to students when they first enter the university.
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