The table below shows the predicted testing outcome for a disease that affects 2% of a population, and has 90% accuracy rate.   Positive Test Negative Test Total Has Disease 18 2 20 Does Not Have Disease 98 882 980 Total 116 884 1000   Given you received a negative test, what is the probability that you have the disease?  Write you answer as a percentage, rounded to the nearest tenth of a percent.

A quick quiz consists of a true/false question followed by a multiple-choice question with 5 possible answers. If both questions are answered with random guesses, find the probability that both responses are correct. Report the answer as a percent rounded to two decimal place accuracy. You need not enter the "%" symbol. Probability %

The table summarizes results from 975 pedestrian deaths that were caused by automobile accidents. DriverIntoxicated? Pedestrian Intoxicated? Yes No Yes 52 72 No 242 609 If one of the pedestrian deaths is randomly selected, find the probability that the driver was not intoxicated.Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.prob = %

The test for a certain disease is 86% accurate.  A hospital tests a sample of 5000 patients for this disease and the incidence rate of the disease is 12%. Fill in the following table showing the results of this disease testing.   Disease No Disease Total Test Positive       Test Negative       Total       A. What percent of these patients tests positive? Round to the nearest 0.1%.   C. If a patient tests negative, what is the percent chance they have the disease? Round to the nearest 0.1%   D.Suppose you select a patient at random from this sample, what is the probability the patient has the disease or tests positive? Use three significant digits.

A poll showed that 49.4% of Americans say they believe that statistics teachers know the true meaning of life. What is the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.

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The highest score in a distribution is 74 and the lowest score is 51. What is the range?

According to a 2009 Reader's Digest article, people throw away about 10% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 93 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.19? Answer = (Enter your answer as a number accurate to 4 decimal places.) Check Answer

The table summarizes results from 982 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? Yes No Yes 55 85 No 267 575 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was intoxicated or the driver was not intoxicated. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob

As part of a statistics project, Jonah surveyed some classmates to find out if they are left- handed or right-handed. This table summarizes his findings. Complete the table by filling in the totals. Boys Girls Total % Right-handed 38 43 What is the probability that a randomly selected student is a left-handed boy? Round your answer to the nearest tenth of a percent. Submit Left-handed 5 4 Total