A film distribution manager calculates that 9% of the films released are flops. If the manager is right, what is the probability that the proportion of flops in a sample of 506 released films would differ from the population proportion by greater than 3%? Round your answer to four decimal places.
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A film distribution manager calculates that 9% of the films released are flops.
If the manager is right, what is the probability that the proportion of flops in a sample of 506 released films would differ from the population proportion by greater than 3%? Round your answer to four decimal places.
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- A researcher believes that 8% of pet dogs in Europe are Labradors. If the researcher is right, what is the probability that the proportion of Labradors in a sample of 630 pet dogs would be greater than 7%? Round your answer to four decimal places.Suppose 57% of the population has a retirement account. If a random sample of size 421 is selected, what is the probability that the proportion of persons with a retirement account will differ from the population proportion by greater than 4% ? Round your answer to four decimal places.2. A city had an unemployment rate of 7%. The mayor pledged to lower this figure and supported programs to decrease unemployment. A group of citizens wanted to test with 0.032 label of significance if the unemployment rate had actually decreased, so they obtained a random sample of 500 citizens to see what proportion of the sample was unemployed. Only 32 citizens in the above sample is still unemployed. What is the probability of Type II error if the actual unemployment rate is 6.5% please don't use software everything needs to be done by hand. Explain because I don't understand my professor. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
- why is 1 the numerator over x + 2000 when you set it as uIs the answer b?The results of a national survey showed that on average, adults sleep 6.9 hours per night. Suppose that the standard deviation is 1.2 hours. Round your answers to the nearest whole number. Use Chebyshev's theorem to calculate the percentage of individuals who sleep between 4.5 and 9.3 hours. At least Use Chebyshev's theorem to calculate the percentage of individuals who sleep between 3.9 and 9.9 hours. At least Assume that the number of hours of sleep follows a bell-shaped distribution. Use the empirical rule to calculate the percentage of individuals who sleep between 4.5 and 9.3 hours per day. At least How does this result compare to the value that you obtained using Chebyshev's theorem in part (a)?
- Suppose a steroid test is 81% sensitive and 85% specific. That is, the test will produce 81% true positive results for steroid users and 85% true negative results for non-steroid users. Suppose that 2.8% of people are steroid users. If a randomly selected individual tests negative, what is the probability he or she is a steroid user? YOUR ANSWER SHOULD BE BETWEEN O AND 100 AND ROUNDED TO 4 DECIMAL PLACES. (e.g. 59.5321 would be 59.5321%)How would the answer change if w = 5. (see image attached)In the July 29, 2001, issue of The Journal News (Hamilton, Ohio), Lynn Elber of the Associated Press reported that “while 40 percent of American families own a television set with a V-chip installed to block designated programs with sex and violence, only 17 percent of those parents use the device.”(a)Use the report’s results to find an estimate of the probability that a randomly selected American family has used a V-chip to block programs containing sex and violence.find P(V and U)According to the report, more than 50 percent of parents have used the TV rating system (TV-14, etc.) to control their children’s TV viewing. How does this compare to the percentage using the V-chip?