Using Correct Distribution. In Exercises 5–8, assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) Find the critical value tα/2, (b) find the critical value zα/2 or (c) state that neither the
5. Miami Heat Salaries Confidence level is 95%, σ is not known, and the normal quantile plot of the 17 salaries (thousands of dollars) of Miami Heat basketball players is as shown.
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- Part 1: 1-1. X1, X2, ... is a random sample of N (H, a?), find the distribution of Y = (n-1)s²arrow_forwardUsing Correct Distribution. In Exercises 5–8, assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) Find the critical value tα/2 , (b) find the critical value zα/2 , or (c) state that neither the normal distribution nor the t distribution applies. Miami Heat Salaries Confidence level is 95%, σ is not known, and the normal quantile plot of the 17 salaries (thousands of dollars) of Miami Heat basketball players is as shown.arrow_forward(c) Calcculate d and sd (d) Find the standardized test statistic t.arrow_forward
- Finding a Prediction Interval. In Exercises 13–16, use the paired data consisting of registered Florida boats (tens of thousands) and manatee fatalities from boat encounters listed in Data Set 10 “Manatee Deaths” in Appendix B. Let x represent number of registered boats and let y represent the corresponding number of manatee deaths. Use the given number of registered boats and the given confidence level to construct a prediction interval estimate of manatee deaths. Boats Use x = 98 (for 980,000 registered boats) with a 95% confidence level.arrow_forwardData for question on screenshot. For each of the surveys, include the Summary Statistics and your Confidence Level/Alpha. At least 90% Confidence is recommended for all 3. Television Survey: In a recent survey, it was stated that Americans watch television on average four hours per day. Assume that σ = 2. Using your class (or any 20 – 30 people) as the sample, conduct a hypothesis test to determine if the average for students at your school is lower. Do not make up your data. Write your answers in the tables below. Sample Mean Sample Standard Deviation Confidence Level What is your null hypothesis? What is your alternative hypothesis, ? In words, define the random variable. Hint: ___ = ____ The distribution to use for the test is… Determine the test statistic using your data.arrow_forwardanswerarrow_forward
- Using Correct Distribution. In Exercises 5–8, assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) Find the critical value tα/2 , (b) find the critical value zα/2 , or (c) state that neither the normal distribution nor the t distribution applies. Denver Bronco Salaries Confidence level is 99%, σ = 3342 thousand dollars, and the histogram of 61 player salaries (thousands of dollars) is shown in Exercise 6.arrow_forwardSample Size Find the Sample size necessary to estimate the mean arrival delay time for all American Airline flights from JFK to LAX. Assume 0131 we want 95% confidence that the sample mean is in error by no more than 5 min. Based on a larger sample than the one given for Exercises 1–4, assume that all arrival delay times have a standard deviation of 30.4 min.arrow_forward1 Please answer all questionsarrow_forward
- Part Darrow_forwardA random variable X has only two values a and b with P(X = a) = p , P(X = b) = q (p + q = 1).Find its mean value and variation.arrow_forwardThe year is 208o. The market portfolio has an expected return of 12%, and a standard deviation of returns of 20%. Bitcoin, with return řBTC, is now 70% of the market by market capitalization. That is, in the market portfolio, wBtC = constitute 30% of the market, by market capitalization. 0.7. Let's call the other components of the market collectively fother: They Write an expression for the covariance of fBTC with the market, in terms of the variance a) of řBTC, the variance of řother, and the covariance of řBTC with rother· b) ĪBTC, the variance of fother, and the covariance of fBTC Wwith fother. Write an expression for the variance of the market portfolio, in terms of the variance of c) CAPM holds, what is the expected return on bitcoin, E [ĩBTCl? Assume that the risk-free rate is 3%. The standard deviation of řBTC is 25% and the standard deviation of ĩother is 12%. If thearrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill