Answered: If X = 114, α= 20, and n = 33,…

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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For each example, choose the confidence interval that has a larger margin of error. 1) OA 90% confidence interval for a mean contructed from a sample of 55 OA 90% confidence interval for a mean contructed from a sample of 45 2) OA 90% confidence interval for a mean constructed from a sample of 45 OA 92% confidence interval for a mean constructed from a sample of 45 3) OA 90% confidence interval for a mean constructed from a sample of 45, using s OA 90% confidence interval for a mean constructed from a sample of 45, using o
The 85.7% confidence interval estimate for p was (0.14, 0.16). Find ?′ and ME.
If n=30, (x-bar)=45, and s=13, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. < u <
use a cutoff value of 5%.
If n=14, (x-bar)=43, and s=16, construct a confidence interval at a 98% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. <μ<
Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 50 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that ? = 7.20 ml/kg for the distribution of blood plasma.
A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 54 men and 70 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women N Mean StDev SE Mean Men Women 98% CI for mu Men - mu Women (- 12.20, - 1.00) T-Test mu Men = mu Women (vs H2 O C. Ho: H1 = H2; Ha: H1 #H2 (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value =
Exercise 3.2 85 of an independent random sample of 180 large retailers and 45 of an independent random sample of 175 small retailers used the regression analysis method as the estimation method. Obtain the 95% confidence interval for the difference between the two population ratios. Thank you so much.
A sample of size n = 36 is drawn from a population whose standard deviation is σ = 15.6. The sample mean is x = 94.5. Construct a 95% confidence interval.
The regression equation attached has been fitted to 20 data points. The means of x1 and x2 are equal to 25 and 40 respectively. The sum of squared differences between observed and predicted values of y have been calculated to be SSE = 133.5, and the sum of squared differences between y and the mean of y is SST = 490.8. Determine the following: a. The multiple standard error of estimate. b. The approximate 95 percent confidence interval for the mean of y whenever x1 = 22 and x2 = 29. c. The approximate 95 percent prediction interval for an individual y value whenever x1 = 22 and x2 = 29. d. Calculate and interpret the coefficient of determination for this regression
The parameters of my population distribution are: µ = 20 and σ = 5. The parameters of my sample are: Mean = 24 and n = 25. Calculate my sample's Z score on the comparison distribution.
Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples.Independent samples from two different populations yield the following data. x̅1 = 393, x̅2 = 703, s1 = 85, s2 = 98. The sample size is 348 for both samples. Find the 90% confidence interval for μ1 - μ2.

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If X = 114, α= 20, and n = 33, construct a 99% confidence interval estimate for the population mean, µ.