If [1740, 1850 is a confidence interval for a population mean. Find the margin of error.Select one:a. 60O b. 80C.55O d. 40

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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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Save Submit Assignment for Grading Exercise 10.02 Algo (Inferences About the Difference Between Two Population Means: Sigmas Known) Question 2 of 13 » Consider the following hypothesis test. Ho: µ1 – H2 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 = 40 n2 = 55 E1 = 24.5 E2 = 22.4 01 = 4.8 02 = 6.0 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)? Use z-value rounded to 2 decimal places. c. With a = 0.05, what is your hypothesis testing conclusion? p-value is Select your answer Ho O- Icon Key Exercise 10.02 Algo (Inferences About the Difference Between Two Population Means: Sigmas Known) « Question 2 of 13
People were polled on how many books they read the previous year. Initial survey results indicate that s= 18.3 books. Complete parts (a) through (d) below. (d) How many subjects are needed to estimate the mean number of books read the previous year within six books with 99% confidence? This 99% confidence level requires subjects.
A survey was taken of the heights, in inches, of 20- to 29-year-old males.A simple random sample of n=15 males 20 to 29 years old results in the data in the table. Construct a 95% t-interval about the population mean. Decide if a 95% t-interval can be constructed about the population mean. If not, state the reason why 65.9 65.4 72.2 73.5 68.1 O A. At-interval can not be constructed because there is an outlier. 73.3 69.5 68.5 71.3 70.2 72.3 66.4 67.9 70.1 O B. At-interval can not be constructed because the data is not normal. 67.7 O C. At-interval can be constructed. For convenience, a normal probability plot and boxplot are given. Percent 75- 50- 25- 0- 60 70 80 65 Height Height
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q12- A point estimate is defined as: Select one: a. the average of the sample values. b. the average of the population values. c. a single value of an estimator. d. an interval within which the population parameter is believed to lie .
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If [1740, 1850] is a confidence interval for a population mean. Find the margin of error. Select one: O a. 60 O b. 80 O c. 55 O d. 40