A machine produces metal pieces that are cylindrical in shape. A sample of pieces is taken, and the diameters are found to be 0.95, 0.96, 0.97, 1.04, 0.98, 0.96, 0.99,0.95, and 0.97 g centimeters. Find a 95% confidence interval for the mean diameter of pieces from this machine, assuming an approximately normal distribution.Click here to view page 1 of the standard normal distribution table.Click here to view page 2 of the standard normal distribution table.Click here to view page 1 of the table of critical values of the t-distribution.Click here to view page 2 of the table of critical values of the t-distribution......|<µ<.(Round to three decimal places as needed.)The confidence interval is

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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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(Use standard normal distribution tables)
Please answer the question in the photo. TY!
The test statistic of z = - 2.67 is obtained when testing the claim that p <0.33. a. Using a significance level of a = 0.01, find the critical value(s). b. Should we reject Ho or should we fail to reject Ho? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. juest a. The critical value(s) is/are z = (Round to two decimal places as needed. Use a comma to separate answers as needed.) b. Choose the correct conclusion below. O A. Fail to reject Ho. There is not sufficient evidence to support the claim that p<0.33. O B. Reject Ho. There is not sufficient evidence to support the claim that p< 0.33. O C. Reject Ho. There is sufficient evidence to support the claim that p< 0.33. O D. Fail to reject Ho. There is sufficient evidence to support the claim that p< 0.33.
In estimation, data from the population is used to estimate the population parameters the mean of the population equals to the mean of the sample data form the sample is used to estimate the sample statistics O data from the sample is used to estimate the population parameters
If, in a sample of n=16 selected from a normal population, X=60 and S=12, what are the critical values of t if the level of significance, α, is 0.01, the null hypothesis, H0, is μ=50, and the alternative hypothesis, H1, is μ≠50? Click here to view page 1 of the critical values for the t Distribution. LOADING... Click here to view page 2 of the critical values for the t Distribution. LOADING... Question content area bottom Part 1 The critical values of t are enter your response here.
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Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 46 people, the mean body mass index (BMI) was 27.8 and the standard deviation was 6.09. Which distribution should be used to construct the confidence interval? Choose the correct answer below. ○ A. Use a t-distribution because the sample is random, the population is normal, and σ is unknown. ○ B. Use a normal distribution because the sample is random, the population is normal, and σ is known. ○ C. Use a t-distribution because the sample is random, n ≥30, and σ is unknown. ○ D. Use a normal distribution because the sample is random, n ≥30, and σ is known. ○ E. Neither a normal distribution nor a t-distribution can be used because either the sample is not random, or n <30, and the population is not known to be normal.
Length of pregnancy in weeks follows a normal distribution. Use the random sample data below to construct the "margin of error" for a confidence interval with a 90% level of confidence for the length of pregnancy in weeks. x = 281 days s = 15 days n=52 None of these 3.6 days 3.1 days 2.7 days 3.5 days Next 3.1459 APR
The test statistic of z= 1.36 is obtained when testing the claim that p> 0.9 a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed b. Find the P-value. c. Using a significance level of a=0.01, should we reject H, or should we fail to reject H,? Click here to view page 1 of the standard nomal distribution table Click here to view page 2 of the standard normal distribution table a. This is a right-tailed test. b. P-value =D (Round to three decimal places as needed.)
A service data on the body mass index of 654 young women the mean body mass index in the sample was X bar equals 26.8 service data on the body mass index of 654 young women the mean body mass index. We treated these data as an SRS from a normal distribution population with a standard deviation of 7.5 A. given 3 confidence intervals for the mean BMI in the population using 90 95 and 99% confidence. B. What are the margins of air for 90, 95 and 99% confidence? how does increasing the confidence level change the margin of error of a confidence interval when the sample size and population standard deviation remain the same
F Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value Za/2, or (c) state that neither the normal distribution nor the t distribution applies. The confidence level is 90%, o is not known, and the histogram of 65 player salaries (in thousands of dollars) of football players on a team is as shown. UA. ta/2 O B. (Round to two decimal places as needed.) Za/2= (Round to two decimal places as needed.) OC. Neither the normal distribution nor the t distribution applies. 40- 30- 20- 0- 0 4000 8000 12000 16000 20000 Salary (thousands of dollars) Q Q 4

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