A group of students estimated the length of one minute without reference to a watch or clock, and the times (seconds) are listed below. Use a 0.01 significance level to test the daimgood at estimating one minute?76 90 48 73 5336 71 75 76 54 75 76 101 99 72Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses?OA. H₂ H 60 secondsOB H₂H, u 60 seconds60 seconds#60 secondsH,OC. Ho p#60 secondsH, p=60 secondsOD H₂=60 secondsH, 60 secondsDetermine the test statistic.(Round to two decimal places as needed.)Determine the P-value.(Round to three decimal places as needed.)State the final conclusion that addresses the original claim.that, as a grouH₂ There isevidence to conclude that the mean of the population of estimates is 60 secondscorrect. It

Given76,90,48,73,53,36,71,75,76,54,75,76,101,99,72sample size(n)=15α=0.01

Answered: A group of students estimated the…

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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The mean height of a certain kind of plant is 199 centimeters. Suppose we want to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 199. State the null hypothesis Ho and the alternative hypothesis H, that we would use for this test. H: 0 合 O0 Ix
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 33 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.05, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 310 29 36 34 24 39 23 30 28 37 26 30 26 30 30 37 25 35
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You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.10, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 34 26 27 35 33 37 28 23 270 25 31 34 30 32 27 30 28 28 (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H,? O A. Ho: H= 31 O B. Ho: H= 31 OC. Ho: H>31 Ha:H 31 (b) Use technology to find the P-value, P = (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Which of the following is correct? O A. Reject Ho because the P-value is greater than the significance level. O B. Fail to reject Ho because the P-value i less than the…
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. H0: μ = 5.2 Ha: μ ≠ 5.2 Question content area bottom Part 1 What type of test is being conducted in this problem? A. Right-tailed test B. Two-tailed test C. Left-tailed test
Read this sentence from the results section of a recent publication regarding the perception of emotions in crowds:"Supporting the crowd-emotion-amplification hypothesis, results showed that the estimated mean crowd emotion was 2.87 points higher (scale from 1 to 50) than the actual mean crowd emotion... t(14533) = 16.8, p < .001...".Assume the authors conducted a one-sample t-test. How many people were in their study analysis?
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 32 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a= 0.10, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 32 31 26 31 34 41 25 24 290 27 30 33 30 29 28 30 25 23 OD. Ho p 32 Ha p2 32 Ha p< 32 Ha us 32 (b) Use technology to find the P-value. P = (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer.
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.10, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. 34 27 26 35 29 39 25 26 290 28 28 34 30 32 28 29 26 24 (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H3? O A. Ho: H= 31 B. Ho, μs 31 O c. Ho : μ= 3 Ha: H#31 Ha: u> 31 Ha: H31 OF. Ho: H231 Ha: u231 Ha: us 31 Ha: µ<31 (b) Use technology to find the P-value. P = (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Which of the following is correct? O A. Reject Ho because the P-value is less than the significance level. O B. Fail…
Next question A golf association requires that golf balls have a diameter that is 1.68 inches. To deter hform to the standard, a random sample of golf balls was selected. Their diameters are shown in the accompanying data table. Do the golf balls conform to the standards? Use the x = 0.01 level of significance. Click the icon to view the data table. First determine the appropriate hypotheses. Ho: H₁: (Type integers or decimals. Do not round.) Find the test statistic. (Round to two decimal places as needed.) Find the P-value. (Round to three decimal places as needed.) What can be concluded from the hypothesis test? O A. Reject Ho. There is sufficient evidence to conclude that the golf balls do not conform to the association's standards at the α = 0.01 level of significance. B. Do not reject Ho. There is not sufficient evidence to conclude that the golf balls do not conform to the association's standards at the x = 0.01 level of significance. C. Do not reject Ho. There is sufficient…
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18 classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At a = 0.05, can you support the university's claim? Complete parts (a) through (d) below. Assume the population is normally distributed Ha μ#31 33 26 (b) Use technology to find the P-value. 25 30 28 38 33 36 H₂ μ31 EN 25 28 310 24
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.4 versus H₁: p > 0.4 n = 125; x = 55; x = 0.05 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, Zo. = Zo 0.91 (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.)
Automobile accident and asked what they saw. One group of students was asked how fast were they going when they smashed into the car? Other group verb was changed to hit. Smashed into reported higher rates of speed than hit. Suppose a researcher repeats this study with current college students and obtains the following results. Smashed into Hit n=15 n=15 M=40.8 M=34.0 SS=510 SS=414 1. State the hypothesis 2. Do the results indicate a significantly higher estimated speed for the smashed into group? Use a two-tailed test with a=.05. Compute estimated Cohen's D to measure size of the effect. State numerical value and meaning.

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