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A random sample of 100 adults was selected. 80 adults in the sample said they were non-smokers
1. What conditions must be satisfied in order to construct a confidence interval on binomial parameter p?
2. Construct a 95 percent confidence interval for the population proportion, p, of non-smokers.
3. Interpret your answer to question 2, i.e., what is your conclusion?
4. Is 0.75 a plausible value for the population proportion, p, of nonsmokers? Explain.
5. Suppose we want a 99% confidence interval on the population proportion, p, of non-smokers. Will the 99% C.I be wider or narrower than the 95% C.I.? Explain.
Month is uniformly distributed between 2 and 12. Find the probability density function and the cumulative distribution function of x.
Each patient also submits the blood sample and their glucose tolerance status is determined. Determine the sensitivity of screening test?
He estimates that he/she has a 45% chance of success with each customer. What is the probability that he/she will earn his/her bonus today?
Which statement about re-expressing data is not true? I. Unimodal distributions that are skewed to the right will be made more symmetric by taking the square root of the variable.
Standard deviation of the population is 9 hours. Give the null and alternative hypotheses. Compute the test and p-value. Use a=0.01 to make your conclusion based on the p-value.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
In total, of 1000 applications they got from men, they hired 625, or 62.5%. Based on numbers presented, what do you believe of the discrimination claim?
Assume duration of human pregnancies follow mound-shaped distribution with mean of 266 days and the standard deviation of 16 days.
a multiple-choice test has 30 questions and each one has five possible answers of which one is correct. if all answers
Kurt's Adventures, Inc. stock is quite cyclical. In a boom economy, the stock is expected to return 30% in comparison to 12% in a normal economy and a negative 20% in a recessionary period.
four different kinds of radar systems designed to detect or monitor the airspace around a major airport for high flying
Compute a 90% confidence interval of the mean for a Weschler intellegence test with mean of 100.00 and standard deviation of 15.00 for a sample of 100 people. Use two decimal places.
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