I want to know solutions Question 2 Comparison of effectiveness on three different advertisement methods on car selling among 61 selected MFU students. The results arepresented as following;Method 1 TVMethod 2 RadioMethod 3 Newspapers42434.2388Total=Total=Total=Question: Test hypothesis whether three different advertisement methods are resulting in the same mean of selling at the significant level 0.05H, =H,=

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Question 2 Comparison of effectiveness on three different advertisement methods on car selling among 61 selected MFU students. The results are presented as following; Method 3 Newspapers 2 Method 1 TV Method 2 Radio 5 4 4 3 4 5 2 3 8 8 Total= Question: Test hypothesis whether three different advertisement methods are resulting in the same mean of selling at the significant level 0.05 H, = H,= Total= Total=

Question 2 Comparison of effectiveness on three different advertisement methods on car selling among 61 selected MFU students. The results are presented as following; Method 3 Newspapers 2 Method 1 TV Method 2 Radio 5 4 4 3 4 5 2 3 8 8 Total= Question: Test hypothesis whether three different advertisement methods are resulting in the same mean of selling at the significant level 0.05 H, = H,= Total= Total=

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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Question 2 There is a claim that drink driving has been very common in high ways. The Highway Police randomly caught 300 drivers for breath alcohol test and found that 14% of drivers have breath alcohol over the legal limit. At 4% level of significance, use the p-value approach to test the hypothesis that the percentage of drivers who are drink driving is more than 10%.
Question #3 A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 298 vinyl gloves, 60% leaked viruses. Among 298 latex gloves, 13% leaked viruses. Using the accompanying display of the technology results, and using a 0.01 significance level, test the claim that vinyl gloves have a greater virus leak rate than latex gloves. Let vinyl gloves be population 1. View the technology results. Technology results Pooled proportion: 0.37 Test statistic, z: 11.9063 Critical z: 2.3264 P-value: 0.0000 98% Confidence interval: 0.3896624 < p1 − p2 < 0.5499349 What are the null and alternative hypotheses? A. H0: p1 = p2 H1: p1 < p2 B. H0: p1 = p2 H1: p1 ≠ p2 C. H0: p1 > p2 H1: p1 = p2 D. H0: p1 < p2 H1: p1 = p2 E. H0: p1 = p2 H1: p1 > p2 F. H0: p1 ≠ p2 H1: p1 = p2 Identify the test statistic. ___________ (Round to two decimal places as needed.)…
Three samples of each of three types of PVC pipe of equal wall thickness are tested to failure under three temperature conditions, yielding the results shown below. Research questions: Is mean burst strength affected by temperature and/or by pipe type? Is there a “best” brand of PVC pipe? Burst Strength of PVC Pipes (psi) Temperature PVC1 PVC2 PVC3 Hot (70º C) 247 299 239 277 287 262 283 275 279 Warm (40º C) 325 341 297 322 319 315 296 335 304 Cool (10º C) 358 375 327 366 352 334 338 359 340 Click here for the Excel Data File (a-1) Choose the correct row-effect hypotheses. a. H0: A1 ≠ A2 ≠ A3 ≠ 0 ⇐⇐ Temperature means differ H1: All the Aj are equal to zero ⇐⇐ Temperature means are the same b. H0: A1 = A2 = A3 = 0 ⇐⇐ Temperature means are the same H1: Not all the Aj are equal to zero ⇐⇐ Temperature means differ a b (a-2) Choose the correct column-effect hypotheses. a. H0: B1 ≠ B2 ≠ B3 ≠ 0 ⇐⇐…
QUESTION 9 Hypothesis testing on samples with fewer than 30 participants can be carried out by using the t-value for the corresponding level of significance in place of the zvalue when setting up the decision rule. True False
NutritionResearchers compared protein intake among threegroups of postmenopausal women: (1) women eating astandard American diet (STD), (2) women eating a lactoovo-vegetarian diet (LAC), and (3) women eating a strictvegetarian diet (VEG). The mean ± 1 sd for protein intake(mg) is presented in Table 12.29. *12.1 Perform a statistical procedure to comparethe means of the three groups using the critical-valuemethod.*12.2 What is the p-value from the test performed inProblem 12.1? I just want 12.2 solved.
NutritionResearchers compared protein intake among threegroups of postmenopausal women: (1) women eating astandard American diet (STD), (2) women eating a lactoovo-vegetarian diet (LAC), and (3) women eating a strictvegetarian diet (VEG). The mean ± 1 sd for protein intake(mg) is presented in Table 12.29.*12.1 Perform a statistical procedure to comparethe means of the three groups using the critical-valuemethod.
Question #2 A diet guide claims that you will get 120 calories in a serving of vanilla yogurt. Consumer Reports tested 14 brands of vanilla yogurt and found the following numbers of calories per serving: 160 200 220 230 120 180 140 130 170 190 80 120 100 170 Test the claim that the mean number of calories per serving of vanilla yogurt is 120. Use a significance level of 0.05. Show all the steps of your hypothesis test including The p-value: Initial conclusion Final conclusion about the original claim
Researchers compared protein intake among three groups of postmenopausal women: (1) women eating a standard American diet (STD), (2) women eating a lactoovo- vegetarian diet (LAC), and (3) women eating a strict vegetarian diet (VEG). The mean ± 1 sd for protein intake (mg) is presented in Table 12.29. 12.4 Suppose that in the general population, 70% of vegetarians are lacto-ovo-vegetarians, whereas 30% are strict vegetarians. Perform a statistical procedure to test whether the contrast L = 0.7y2 + 0.3y3 − y1 is significantly different from 0. What does the contrast mean?12.5 Using the data in Table 12.29, perform a multiplecomparisons procedure to identify which specific underlying means are different.
Researchers compared protein intake among three groups of postmenopausal women: (1) women eating a standard American diet (STD), (2) women eating a lactoovo-vegetarian diet (LAC), and (3) women eating a strict vegetarian diet (VEG). The mean ± 1 sd for protein intake (mg) is presented in Table 12.29. *12.4 Suppose that in the general population, 70% of vegetarians are lacto-ovo-vegetarians, whereas 30% are strict vegetarians. Perform a statistical procedure to test whether the contrast L y = + 07 03 2 3y y − 1 . . is significantly different from 0. What does the contrast mean? 12.5 Using the data in Table 12.29, perform a multiple comparisons procedure to identify which specific underlying means are different.
A researcher conducts a two-year study comparing the number of cavities in a group of 30 randomly selected young children from the community before and after the application of fluoride to test if there is a decrease in the number of cavities. This is an example of a/an: Independent-samples t test or Dependent-samples t test?
An experiment was planned to compare the mean time (in days) required to recover from a common cold for persons given a daily dose of 4 milligrams (mg) of vitamin C, ?2, versus those who were not, ?1. Suppose that 34 adults were randomly selected for each treatment category and that the mean recovery times and standard deviations for the two groups were as follows. sample size : 34 (no supplement), 34 (4mg supplement) sample mean : 6.7 (no supplement), 5.5 (4mg supplement) sample standard deviation : 2.6 (no supplement), 1.3 (4mg supplement) a) If you want to show that the use of vitamin C reduces the mean time to recover from a common cold, give the null and alternative hypotheses for the test. One or two-tailed test? b) Conduct the statistical test of the null hypothesis in part (a) and state your conclusion. Test using ? = 0.05. (Round your answer to two decimal places.) find test statistic z = ? find the rejection region z > ? , z < ? conclusion?
Following is the rating of marketing aggressivity (X) and sales performance (Y) of 8 sales staffs in Glovis Co in the past year: Table Attached Question: What is the hypothesis of the study?