6.46 Cable TV subscriptions vs. streaming services. Referto the 2018 CNBC All American Survey discussed inExercise 2.4 (p.48). Recall that a poll was conductedon a representative sample of 800 adults living in theUnited States in order to investigate the decline incable and satellite TV subscriptions. For this sample, 160adults revealed that they are "cord cutters," (i.e., theycanceled their cable/satellite TV service and now onlyuse a video streaming service like Netflix or Hulu). Youwant to estimate p, the true proportion of all US adultswho are "cord cutters."a. Find p, the point estimate of p.b. Describe the sampling distribution of p.c. Find a 95% confidence interval for p.d. Give a practical interpretation of the confidence inter-val, part c.e. Suppose a cable TV executive claims that p = .10. Isthe claim believable? Explain.

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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I need help with number 8, 4, and 5. Thank you so much :)
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Ten countries were randomly selected from the list of 129 countries in theCountry. The countries are compared with respect to their gross nationalproduct per capita, an indicator of the average income level of each country.Researchers have found that people in countries with higher income levelstend to live longer than do people in countries with lower income levels.In addition, birth rates tend to be higher in countries with lower incomes,with birth rates declining as countries become better off economically. a. Use this data to determine the Spearman rank correlation of GNP with(i) life expectation, and (ii) the birth rate. b. Test to determine whether the correlation of ranks is statisticallysignificant at the 0.05 level of significance.
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None
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