Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she truly has the flu (and not just a nasty cold) is only about 4%. Of the next 25 patients calling in claiming to have the flu, we are interested in how many actually have the flu. State the distribution of X. (Enter exact numbers as integers, fractions, or decimals.)

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In a statistics activity, students are asked to spin a penny and a dime and determine the proportion of times that each lands with tails up. The students believe that since a dime is lighter, it will have a lower proportion of times landing tails up compared to the penny. The students are instructed to spin the penny and the dime 30 times and record the number of times each lands tails up. For one student, the penny lands tails side up 18 times, and the dime lands tails side up 20 times. Let PD = the true proportion of times a dime will land tails up and pp = the true proportion of times a penny will land tails up. Which of the following is the correct standardized test statistic and P-value for the hypotheses, Ho: Po-Pp= 0 and H₂: Po-Pp<0?

. In an original group, the probability of choosing a girl from that group was 1/3 When 1more girl joins the group, the probability of choosing a girl out of the group changes from 1/3 to 3/7 How many boys were there in the group originally?

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A survey was administered to 1000 Broward college students. 30% of the respondents indicated that they prefer online classes over face to face classes. How many respondents stated they prefer online classes over face to face classes?

A pie chart reflects student performance... 16% As, 24% Bs, 32% Cs, 16% Ds, 12% Fs A. There were 317 students in total. How many students received As? B. If a student is selected at random what's the percentage it be a C student?

In a statistics activity, students are asked to spin a penny and a dime and determine the proportion of times that each lands with tails up. The students believe that since a dime is lighter, it will have a lower proportion of times landing tails up compared with the penny. The students are instructed to spin the penny and the dime 30 times and record the number of times each lands tails up. For one student, the penny lands tails side up 18 times, and the dime lands tails side up 20 times. Let pp = the true proportion of times a dime will land tails up and pp = the true proportion of times a penny will land tails up. The P-value for this significance test is 0.296. Which of the following is the correct conclusion for this test of the hypotheses H Pp-Pp=0 and H, Po-Pp 0.05. There is sufficient evidence that the true proportion of times a dime will land tails up is significantly less than the penny. O The student should reject the null hypothesis since 0.296 > 0.05. There is insufficient…

Suppose that 9% of all athletes in a sport use a banned drug. A test is available that detects 94% of athletes who use the drug. But the test also gives a positive result for 8% of those who do not use the drug. What percent of athletes who test positive for the drug are actually using the drug? Answer: 77.28 %

A large group of people get together. Each one rolls a die 120 times, and counts the number of aces (with a single dot). About what percentage of these people should get counts in the range 10 to 30? Choose the closest answer.