hi can you help me answer a, b and c? Directions: On a clean sheet of paper, find the critical value of the following.ta and n = 17 for the 90% confidence interval for the mean.а.b.tg and n = 20 for the 98% confidence interval for the mean.tg and n = 22 for the 99% confidence interval for the mean.C.d.ta and n = 8 for the 95% confidence interval for the mean.е.ta and n= 21 for the 85% confidence interval for the mean.

We have given that, (a) n = 17 for the 90% confidence interval for mean. (b) n = 20 for the 98%…

Answered: Directions: On a clean sheet of paper,…

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 parts a and b, use the t tables, software, or a calculator to estimate. For parts c and d, use software or a calculator to estimate. a) the critical value of t for a 90% confidence interval with df=25. b) the critical value of t for a 99% confidence interval with df=89. c) the P-value for t≥1.38 with 4 degrees of freedom. d) the P-value for t>1.41 with 25 degrees of freedom. LOADING... Click the icon to view the t table. a) What is the critical value of t for a 90% confidence interval with df=25? nothing (Round to two decimal places as needed.) b) What is the critical value of t for a 99% confidence interval with df=89? nothing (Round to two decimal places as needed.) c) What is the P-value for t≥1.38 with 4 degrees of freedom? nothing (Round to three decimal places as needed.) d) What is the P-value for t>1.41 with 25 degrees of freedom? nothing (Round to three decimal places as needed.)
A statistician wanted to construct a 95% confidence interval for the population slope between height (in inches) and weight (in pounds) of his co-workers. He made height the explanatory (independent) variable and weight the response (dependent) variable. He selected a random sample of 30 people from work and asked them to list their height and weight. After seeing his conditions were satisfied, he constructed the interval. Which of the following would he use for the critical value? A) 1.960 B) 2.037 C) 2.042 D) 2.045 E) 2.048
Match each Test Situation with the correct Critical Value. For a two-sided test, find only the positive value. Test Situation One sample, n = 35, Ha:p≠p0 , and α= 0.001______ One sample, n = 45, Ha:p<p0, and α= 0.01_______ One sample, n = 61, Ha:p>p0, and α= 0.05_____ One sample, σσ is unknown, n = 57, Ha:μ<μ0, and α= 0.05_____ One sample, σ is unknown, n = 47, Ha:μ≠μ0, and α = 0.05___ One sample, σ is known, n = 175, Ha:μ≠μ0, and α= 0.05___ One sample, σ is unknown, n = 37, Ha:μ>μ0 and α = 0.01____ Critical Value 3.291 2.434 -1.673 1.645 2.013 -2.326 1.960
If the value of Cronbach’s alpha is 0.07, it means ___________; a. Research instrument is not reliable b. Research instrument is internally consistent c. Data is reliable d. Data is internally consistent
find the value: t a2and n = 15 for the 98% confidence interval for the mean. t a2and n= 20 for the 95% confidence interval for the mean.
Find the confidence level related to the critical value zα/2=2.16
24 b. Find the critical value t a/2 corresponding to a 95% confidence interval
Which of the following is the best description of a multiple-baseline design? a. A study that takes several measures on nonequivalent groups before and after treatment. b. A study that takes baseline measures, then introducing the independent variable, and then retaking the baseline measures. c. A study that assesses the effects of introducing the treatment at different times over multiple subjects, behaviors, or situations. d. A study that reintroduces the independent variable after the second baseline measure.
What type of statistical test are you conducting if h1 states that the parameter is greater than the value claimed in h0? a) left-tailed b) right-tailed c) two-tailed d) dove-tailed
As a bonus assignment a former student checked if your professor gave a statisticallysignificant difference in grades between his male and female students. She based herstudy based on grades assigned in intermediate Econ courses (Econ 303, 305 and 317)and her sample included nm = 485 male students and nf = 264 female students. Theaverage grades received were xm = 84.6 and xf = 85.8 The population standad deviation were σ m = 12.0 and σ f = 11.4 8. From the same extra-credit study as in question 7 see above, this former student found that the proportion of female students in principle courses (Econ 203, 205) was ?̅? = 0.380, while the proportion of female students in intermediate courses (Econ 303, 305, 317) was ?̅? = 0.352. The principle courses sample size was np = 782, while the intermediate courses sample size was ni = 749. Test the hypothesis that female students are less in intermediate courses using a 90% confidence level and the p-value approach.
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Arsenic-based additives in chicken feed have been banned by the European Union. Ifa restaurant chain finds significant evidence that the mean arsenic level of theirchickens is above 80 ppb (parts per billion), the chain will stop using that supplier ofchicken meat. The hypotheses are: H 0 : µ = 80H 1 : µ > 80 where µ represents the mean arsenic level in all chicken meat from that supplier.Samples from two different suppliers are analyzed, and the resulting p-values aregiven: Sample from Supplier A: p-value is 0.0003Sample from Supplier B: p-value is 0.3500 a) Interpret each p-value in terms of the probability of the results happening byrandom chance. b) Which p-value shows stronger evidence for the alternative hypothesis? c) Which supplier, A or B, should the chain get chickens from in order to avoid toohigh a level of arsenic?

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Directions: On a clean sheet of paper, find the critical value of the followi ta and n 17 for the 90% confidence interval for the mean. a. b. ta and n = 20 for the 98% confidence interval for the mean. ta and n = 22 for the 99% confidence interval for the mean. C.