# Nsg math 225n week 6 statistics quiz with all the correct answers

MATH 225N Week 6 Statistics Quiz with all the correct answers 100%2020/2021Question 1A statistics professor recently graded final exams for students in her introductory statistics course. In a reviewof her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10.Construct a confidence interval for the mean score (out of100 points) on the final exam.That is correct!Answer: (67, 87)Question 2A random sample of adults were asked whether they prefer reading an e-book over a printed book. Thesurvey resulted in a sample proportion of p′=0.14, with a sampling standard deviation of σp′=0.02, whopreferred reading an e-book.Use the empirical rule to construct a 95% confidence interval for the true proportion of adults who prefer ebooks.That is correct!Answer: ( 0.10, 0.18)Question 3The pages per book in a library are normally distributed with an unknown population mean. A random sampleof books is taken and results in a 95% confidence interval of (237,293) pages.What is the correct interpretation of the95% confidence interval?That is correct!We estimate with 95% confidence that the sample mean is between 237 and 293 pages.We estimate that 95% of the time a book is selected, there will be between 237 and 293 pages.We estimate with 95% confidence that the true population mean is between 237 and 293 pages.Question 4The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If … Purchase document to see full attachment

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