SAT coaching: A sample of 10 students took a class designed to improve theirSAT math scores. Following are their scores before and after the class. Can youconclude that the mean increase in scores is greater than 1s points? Let ,represent the mean score after the class and ,=4,-4. Use the a=0.10 level andthe p-value method with the TI-84 Plus calculator.deScoreBefore 447440439 435 451 453 491526 473 440After48247945143145446311529493466Send data to ExcelPart: 0 /4Part 1 of 4(a) State the appropriate null and alternate hypotheses.HoHThis is a (Choose one)test. Part 2 of 4(b) Compute the p-value. Round the answer to at least four decimal places.P-valueCorrect Answer:P-value = 0.9767Part 3 of 4Determine whether to reject HDo not reject the null hypothesis.Part 4 of 4(c) State a conclusion.There is notv enough evidence to conclude that the mean emissions arelower at 40 F.

There is always some contention about the value of a parameter or the relationship between…

Answered: (b) Compute the p-value. Round 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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From the given information in each case below, use technology to find the P-value for a chi-square test and give the conclusion for a significance level of a = 0.01. (Use technology to calculate the P-value. Round your answers to four decimal places.) USE SALT (a) x² = 7.40, df = 2 P-value = State the conclusion. Reject Ho Fail to reject Ho (b) x² = 12.90, df = 6 P-value= State the conclusion. O Reject Ho. Fail to reject Ho- (c) x² = 17.70, df = 9 P-value = State the conclusion. O Reject Ho- Fail to reject Ho. (d) x² = 21.40, df = 4 P-value = State the conclusion. O Reject Ho Fail to reject Ho (e) x² = 5.10, df = 3 P-value = State the conclusion. Reject Ho. O Fail to reject Ho.
I need detailed explanation to solve this exercise from Adjustment Theory. I have no clue how to solve it.
Answers: 1. Fobt = 7.54, reject H0;, do Wilcoxon; Tobt = 90.5, reject H0 2. Fobt = 10.08, reject H0, do Wilcoxon; Zobt = 1.197, do not reject H0 3. t = .163, Do not reject H0; no evidence that the device increases cars' mpg
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A nutritionist claims that the mean tuna consumption by a person is 3.4 pounds per year. A sample of 90 people shows that the mean tuna consumption by a person is 3.3 pounds per year. Assume the population standard deviation is 1.02 pounds. At α=0.03, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis. A. H0: μ=3.4 Ha: μ≠3.4 Your answer is correct. B. H0: μ>3.4 Ha: μ≤3.4 C. H0: μ≤3.3 Ha: μ>3.3 D. H0: μ≤3.4 Ha: μ>3.4 E. H0: μ>3.3 Ha: μ≤3.3 F. H0: μ≠3.3 Ha: μ=3.3 (b) Identify the standardized test statistic. z=negative 1.34−1.34 (Round to two decimal places as needed.)
nutritionist claims that the mean tuna consumption by a person is 3.4 pounds per year. A sample of 90 people shows that the mean tuna consumption by a person is 3.3 pounds per year. Assume the population standard deviation is 1.02 pounds. At α=0.03, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis. A. H0: μ=3.4 Ha: μ≠3.4 Your answer is correct. B. H0: μ>3.4 Ha: μ≤3.4 C. H0: μ≤3.3 Ha: μ>3.3 D. H0: μ≤3.4 Ha: μ>3.4 E. H0: μ>3.3 Ha: μ≤3.3 F. H0: μ≠3.3 Ha: μ=3.3 (b) Identify the standardized test statistic. z=negative 0.93−0.93 (Round to two decimal places as needed.) (c) Find the P-value. 0.3520.352 (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis.
The calibration of a scale is to be checked by weighing a 11 kg test specimen 25 times. Suppose that the results of different weighings are independent of one another and that the weight on each trial is normally distributed with o = 0.200 kg. Let u denote the true average weight reading on the scale. (a) What hypotheses should be tested? Ho: H = 11 Ha: u + 11 Ho: H + 11 H3i H 11 a (b) With the sample mean itself as the test statistic, what is the P-value when x = 10.83? (Round your answer to four decimal places.) What would you conclude at significance level 0.01? Conclude that the true mean measured weight differs from 11 kg. Conclude that the true mean measured weight is the same as 11 kg. (c) For a test with a = 0.01, what is the probability that recalibration is judged unnecessary when in fact u = 11.2? (Round your answer to four decimal places.) For a test with a = 0.01, what is the probability that recalibration is judged unnecessary when in fact u = 10.9? (Round your answer to…
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.
need question 20, use top paragrapgh to help answer
in Practice 9.1 (page 4 of 7) in Course: INNOVATE English in INNOVATE Physical Educati x VituaIsC Moodle an Practice 8.2 (page 4 of 6) Ask a Question | bartleby + A scde-genius.mrooms.net/mod/quiz/attempt.php?attempt=7539876&cmid=945424&page=3 G in cc in 6.12 Unit 6 Benchm. O New Tab VSC Akira Frazier Home / My courses / İNNOVATE Geometry CP 2020-21 (Khaleelah Stroman) / Unit 8: Right Triangles and Trigonometry / Practice 8.2 Quiz navigation Question 7 Tries remaining: Find the Missing Side Lengths Vocabulary 3 Points out of 1.00 Instructions: Find the missing side lengths. Leave your answers as radicals in simplest form. P Flag Find the Missing Sides question 3 4 | 5 || 6 9 10 11 12 60° 30 Finish attempt ... m = n = Check VI 1:37
ndependent random samples are selected from two populations and are used to test the hypothesis Hn: (H, - H2) = 0 against the alternative H,: (4, - H2) #0. An analysis of 232 observations from population 1 and 311 from population 2 yielded p-value of 0.113. Complete parts a and b below. a. Interpret the results of the computer analysis. Use as0.10. A. Since this p-value exceeds the given value of a, there is insufficient evidence to indicate that the population means are different. O B. Since the given a value exceeds this p-value, there is insufficient evidence to indicate that the population means are different. OC. Since the given a value exceeds this p-value, there sufficient evidence to indicate that the population means are different. O D. Since this p-value exceeds the given value of , there is sufficient evidence to indicate that the population means are different. b. If the alternative hypothesis had been Ha: (H1 - H2) <0, how would the p-value change? Interpret the p-value…
31 it has been found that average dishwasher lasts a handful of year before needing repaired. O'Brien Dishwashers want to test a minimum sample of its dishwashers at alpha = 0.05. using a stdev = 318, find the minimum number of dishwashers needed to do this. They would like the error to be within 159. State your answer in the appropriate format. %3D

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