. A random sample of size 10 has been drawn from a normal population N (4, 0) andthe observations are found to be 60, 62, 63, 64, 65, 67, 68, 69, 70 and 72. Obtain an unbiased estimate ofo and a 95% confidence interval of u. Given that upper 2:5% point of t distribution with 9 degrees offreedom is 2-26.

Sample size n=108 degree of freedom = df = n - 1 = 9 tc= 2.26

Answered: . A random sample of size 10 has been…

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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43. Independent random samples are selected from two populations. Below are selected summary statistics. Рop. Mean 73.00 Stand. Dev. Sample size 1 10.00 14 2 62.50 6.00 8 (a) Construct the 95% confidence interval for их — рү. (b) Obtain the P-value for the alternative
We have a dataset with n = 10 pairs of observations (x;, Yi), and 683, у — 813, ? = 47, 405, Tak = 56, 089, v : 66, 731. i=1 What is an approximate 99% confidence interval for the intercept of the line of best fit?
5. An electrical firm manufactures flashlight that have length of life that is normally distributed, with a standard deviation of 35 hours. If a random sample of 150 flashlights has a mean life of 480 hours, construct a 99% confidence interval for the mean of the flashlights produced by the firm.
Age x and resting heart rate y were sampled for 25 randomly selected children from age 2 to 9. Summary information is: n = 25, Σx = 140.5, Σx2 = 903.75, Σy = 2567, Σy2 = 264, 457, Σxy = 14, 171.5 (a) Compute a 95% confidence interval for the average resting heart rate of 3 six year old children.
#13. A random sample of 20 health maintenance organization was selected. For each health maintenance organization, the co-pay (in dollars) for doctors office visit was recorded. The results are as follows. 33, 41, 39, 27, 47, 60, 58, 31, 47, 25, 41, 42, 50, 47, 32, 35, 50, 55, 46, 37 Under the assumption that co-pay amounts are normally distributed find a 90% confidence interval for the mean co-pay amount in dollars. Give the lower and upper limit of a 90% confidence interval. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places in round your answer to one decimal place. Lower limit: Upper limit:
8. Let x be a random variable that represents the hemoglobin count (HC) in human blood (measured in grams per milliliter). In healthy adult females, x has an approximately normal distribution with a population mean of µ =14.2, and population standard deviation of o = 2.5. Suppose a female patient had 10 blood tests over the past year, and the sample mean HC was determined to be x= 15.1. With a level of significance a = .05 determine whether he patient's HC is higher than the population average. 16 étv F3 DIL F4 F6 7 8 R
品2 learn.zybooks.com DZL 4-3 Project One Submission -.. DZL 6-2 Participation Activities: Con... Z 5.2 - MAT 240: Applied Statistics DZL Module Five MAT 240: Applied Statistics home > 6.1: Confidence intervals E zyBooks CHALLENGE 6.1.1: Confidence intervals for population mean. ACTIVITY 389226.2543846.qx3zqy7 Jump to level 1 A clothing retailer is interested in the average waist size of men. A sample is taken with the results given below. Column1 Mean 41.32 Standard Error What is the sample statistic? = 41.32 C 1.447 Median 40 What is the point estimate for the average waist size? 41.32 Mode Standard Deviation 6.307 Sample Variance 39.78 What is the level of confidence as a decimal? Ex0.55 Kurtosis -0.79 Skewness 0.571 What is the margin of error? 2.509 Range Minimum 32 What is the confidence interval? [ Maximum 52 Sum 785 Count Confidence Level(90.0%) 60 LEGO Check Next References (*1) The Media Insight Project. "How Millennials Get News: Inside the Habits of America's First Digital…
Given are five observations for two variables, x and y.

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