State the critical values (hint: findthe critical T from the t-table) fora onet - test sample t test giventhe following conditions: a) One-tailed test, \alpha = .05, n12 b) One-tailed test, upper-tail critical, \alpha = .01, df= 10 c) Two-tailed test, \alpha= .05, df = 26 d) One-tailedtest, lower-tail critical, \alpha= .05, n = 30one-

The critical value is compared with the test statistic to get to the desired conclusion

Answered: State the critical values (hint: find…

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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Steel rods manufactured in a plant must be a minimum of 2 metres in length in order to pass through an inspection procedure. Steel rods with lengths that are normally distributed, with a mean of 2.1 metres and a standard deviation of 0.1 metres, are produced during the manufacturing process. A random sample of 25 steel rods is chosen, and their lengths are measured using a tape measure. i. Decide on the appropriate distribution of the sample mean of the 25 steel rods in the sample using the appropriate distribution formula. ii. Calculate the probability that the sample mean of steel rods that meet the minimum length requirement is the same as the mean of the entire sample. iii. For example, if the observed sample mean length of steel rods is 2.15, calculate the 98% two-sided confidence interval for the true mean length of the manufacturing process, assuming that it is not known.
6) Describe the difference between a two-sample (independent) t-test and an ANOVA (in terms of what they compare) 3) [t (47) = -8.21, p = .003] Based on the parenthetical statement given above, what is the sample size for this study?
Conduct a related-sample t-test using data set below. Each row represents a pair of scores.2) Determine the critical values ( = .05, two-tailed) you should use to evaluate this t-test.3) Compute r^2 for this t-test. A B18 435 4031 1430 1840 3025 2711 1730 1828 1220 20
A clinical researcher performs a clinical trial on 12 patients to determine whether a drug treatment has an effect on serum glucose. The sample mean glucose of the patients before and after the treatment are summarized in the following table. The sample standard deviation of the differences was 6. Sample mean glucose (mg/dL) Before treatment 114 After treatment 108 What type of hypothesis test should be performed?Select: Left-tailed z-test Unpaired t-test Two-tailed z-test Paired t-test What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist to support the claim that the drug treatment has an effect on serum glucose at the α=0.05 significance level? Select: _____Yes OR _____No
Find the missing values ‘*’, ‘**’, ‘***’, Showing necessary working
"STA3000Y - Advanced Theory of Statistics" is a graduate course taught at UTSG, which can only be taken by PhD students in the Department of Statistical Sciences. Assume the class consists of N = 8 students. The final marks in the course are: 95, 66, 71, 93, 75, 88, 68, 100 Find o?, the population variance. Show all the steps. Do not use any statistical package/excel here. For example, do not copy the final answer from R or from excel. Circle the final answer. Based on a simple random sample (without replacement) of size 4 selected from this class, find the exact variance of the sample total. Show all the steps. Circle the final answer. Based on a simple random sample (with replacement) of size 4 selected from this class, find the exact variance of the sample total. Show all the steps. Circle the final answer. According to the graduate school, a student fails a course if a student scores less than 72. Based on a simple random sample (without replacement) of size 4 selected from this…
The results of the latest writing of the LSAT (Law School Aptitude Test) showed results that were normally distributed with a mean score of 881 and a standard deviation of 50 (c) The Osgoode Hall Law School wants candidates for admission to be in the top 2% of LSAT test scores. What is the minimum test score a candidate needs to achieve to be considered for admission to this school? Our teacher is having us learn using the TI-84. I used invNorm (.02, 881, 50, RIGHT) which gave the answer 983.6874455 (round to 2 decimals so 983.69) and was incorrect. I've tried solving this question before and the answer is always close. What am I doing wrong? Thank you for your help!
find the p-value for two tailed z test if test statitic is 2.5
The mean age when smokers first start is 13 years old with a population standard deviation of 1.8 years. A researcher thinks that smoking age has significantly changed since the invention of ENDS-electronic nicotine delivery systems. A survey of smokers of this generation was done to see if the mean age has changed. The sample of 33 smokers found that their mean starting age was 12 years old. What type of test should you use? A) z-test for population mean B) t-test for population mean C) z-test for population proportion
What is the critical value? What is the p value?

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