Test the claim that the proportion of men who own cats is significantly different than the proportionof women who own cats at the 0.02 significance level.The null and alternative hypothesis would be:Но:HF Ho: UM = µF Ho:PM— pF Ho:рмPF Ho: им —MF Ho:;PFНi: рм > иF Hi: рм # pF Hi:рм < рF Hi:рм > рF Hi: рм < pF Hi:рм # pғThe test is:right-tailed two-tailed left-tailedBased on a sample of 80 men, 25% owned catsBased on a sample of 40 women, 50% owned catsThe test statistic is:(to 2 decimals)The p-value is:(to 2 decimals)Based on this we:O Reject the null hypothesisO Fail to reject the null hypothesis

Given : n1= 80 n2= 40 significance level, 0.02 sample proportion p̂1 =…

Answered: The null and alternative hypothesis…

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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Is there a significant difference on the ratings of the respondents on X11 when grouped according to X2? Statement of the Problem: Is there a significant difference on Productline – X11 when grouped according to Industry Type – X2? Null Hypothesis: There is no significant difference on Productline – X11 when grouped according to Industry Type – X2. Note: The coding for Industry Type is 0 for Magazine Industry and 1 for Newsprint Industry. interpret the T-Test results
You may need to use the appropriate technology to answer this question. The following table contains observed frequencies for a sample of 200. RowVariable Column Variable A B C P 22 46 52 Q 28 24 28 Test for independence of the row and column variables using ? = 0.05. State the null and alternative hypotheses. H0: Variable P is not independent of variable Q.Ha: Variable P is independent of variable Q.H0: The column variable is independent of the row variable.Ha: The column variable is not independent of the row variable. H0: The column variable is not independent of the row variable.Ha: The column variable is independent of the row variable.H0: Variable P is independent of variable Q.Ha: Variable P is not independent of variable Q. Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Reject H0. We conclude that there is an association…
ll T-Mobile LTE 7:51 PM 84% Done 9 of 12 MI+I EU FEL I| e 6 a FJ O O: + i stucient desmos.com/sctivitybuilderatiudent/80074F7UOH264d0cbd95700tscreenid-lalac431-C101-4449 b2at-a500107cotca Update Appe 6 CnCoura Con Ciara Destiny sho. 9 Empleyment Center 4 Locin l Sereion Excirntip. b Salrg Assoclate.. siar n P View utrs Pro. O Nursieg: Tradtion... = Unit 4, Lesson 13: Experimenting Dsetiny Olaagbu 3 of 13 Nuxte> Randomizing Satisfaction The table represents the data collected from from the previous activity. Complete the final column. Trial (Group 1's moan) minus (Group 2's mean) Group 1's mean Group 2's mean Actual 1.1 3.6 1 4 2 3.6 4.4 3 4 4. 4.4 3.6 4 4.4 3.6 4.2 38 4 4 10 1.4 4. 3 4 del W Y A S G H J K V option command command option !! B
Did the ductility of the wire change after soaking it to an acid solution? Infer from the data below: Ductility before soaking Ductility after soaking 2563 2405 2564 2406 2565 2407 2566 2408 2567 2409 2452 2693 2453 2694 2454 2695 2455 2696 2456 2697 2634 2589 2635 2590 2636 2591 2637 2592 1.) Create a null and alternative hypothesis 2.) Is there a significant change before and after soaking? Prove it using computations
One difference between ANOVA and regression is: a) ANOVA is for statistical inference, whereas regression is not b) a regression line accounts for variability, whereas variability is not a concept in ANOVA c) in regression, we estimate a slope, whereas in ANOVA, we estimate mean differences d) ANOVA bases its inferences on samples, whereas regression bases its inferences on populations e) ANOVA and regression are not different at all, they are exactly the same f) ANOVA features p-values, whereas regression does not
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A researcher hypothesized that score differed between the first and the last rounds of major U.S. golf tournaments. Here are the paired data for randomly selected golfers from the 2021 U.S. Open. At the 0.05 level of significance , is there a difference? The score of major golf tournaments Golfer 1 4 Round 1 185 178 175 183 193 173 Round 2 171 180 173 175 188 178 The hypothesis test is as following: Ho: µa = 0 H1: µd #0 Test statistict Hint: Find d-bar and Sd, then find the test statistic.
Biologists were studying the proportions of cats that had spotted markings on their fur in two populations of cats, C and F. An independent random sample of cats was taken from each population, and the difference between the sample proportions of cats with the spotted markings (C minus F) was 0.62. Under the assumption that all conditions for inference were met, a hypothesis test was conducted with the alternative hypothesis being that the population proportions are not equal. The p-value of the test was 0.01. Which of the following is the correct interpretation of the p-value? If the proportions of all cats with spotted markings is the same for both populations, the probability of observing a sample difference of at least 0.62 or at most −0.62is 0.01. Answer A: If the proportions of all cats with spotted markings is the same for both populations, the probability of observing a sample difference of at least 0.62 or at most negative 0.62 is 0.01. A If the…
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ll T-Mobile LTE 7:51 PM 84% Done 12 of 12 aMI . ELI O FO OF RLI O : a tu RI FJJ F iA 的: く+ A student desmos.com/actvitybulderatudent/GU87417000264dCcbd495700dscreeridsfeb94293-elet-431e te28-20c382b553: Apo DrCourse Cu . O Emlnyment Certe Logn iarion Expralien. Upd:te Clare Dustiy nho b sel Anciate.. n n P V Penyak Pr. O N Traton. = Unit 4. Lesson 13: Experimenting Daeliry Oloocbi. 2 f 13 Next> Satisfaction Test The dot plots ropresent the satisfaction ratings for two similar products resulting from a survey givon to 5 randomly selected people who use product A and to 5 randomly solocted peoplo who use product B. The satisfaction rating is based on a scale of 1 to 5, where 1 is not satisfied, 2 is somewhat satisfied, 3 is satisfied, 4 is very satisfied, and 5 is extremely satisfled. Which product has a higher overall satisfaction rating? satisfaction rating for product A 3 4 Product A Product B satisfaction rating for product B FT 23 & 4 6. 8 delet T. Y 14 A S D F G J K L C V B N…
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…

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