The results of the t-test for zinnia height: p=0.381.Did these zinnia height results support the alternative hypothesis of this study?Yes, the zinnia were taller in the mycorrhizae soitNo, there was no statistical difference in zinnia heights between the soils.Question 14✓ SavedThe results of the t-test for zinnia weight: p=0.217.For zinnia weight, can we reject the null hypothesis of the study?Yes, zinnia weighed more in the mycorrhizae soilNo. We failed to reject the null hypothesis because no statistical difference wasfound in zinnia weight between the two soil types

The t test is used when we have to check significant difference between two meaningsand p value is…

Answered: The results of the t-test for zinnia…

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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Determine the kurtosis if the data given is a sample.
The average drying time of a manufacturer’s paint is 20 minutes. Investigating the effectiveness of a modifica-tion in the chemical composition of her paint, the manu-facturer wants to test the null hypothesis μ = 20 minutes against a suitable alternative, where μ is the average dry-ing time of the modified paint. (a) What alternative hypothesis should the manufactureruse if she does not want to make the modification in thechemical composition of the paint unless it decreases thedrying time?(b) What alternative hypothesis should the manufactureruse if the new process is actually cheaper and she wants tomake the modification unless it increases the drying timeof the paint?
A study was conducted to determine whether automobile repair charges are higher for female customers than for male customers. Twenty auto repair shops were randomly selected from the telephone book. Two cars of the same age, brand, and engine problem were used in the study. For each repair shop, the two cars were randomly assigned to a man and woman participant and then taken to the shop for an estimate of repair cost. The repair costs (in dollars) are given in data 4. Which procedure, t or Wilcoxon, is more appropriate in this situation? Why? Are repair costs generally higher for female customers than for male customers? data4 'RepairShop' 'Female' 'Male'1 871 7922 684 7653 795 5114 838 5205 1033 6186 917 4477 1047 5488 723 7209 1179…
A geneticist conducted a hybridization experiment with peas, which resulted in offspring consisting of 410 peas with green pods and 150 peas with yellow pods. According to Mendel’s theory, 1/4 of the offspring peas should have yellow pods. Use a 0.05 significance level to test the claim that the proportion of peas with yellow pods is equal to 0.25. Provide answers below.
The Engineering group performed a factorial experiment to investigate the effect of paint primer type and application method on paint adhesion. The results for each combination of primer type and application method are shown below. Each combination has three specimens painted, then a finish paint was applied, and the adhesion force was measured. Compute for the following: (1) Sum of Squares, Degrees of Freedom, (3) Mean Square, (4) fo, and (5) P-Value for; (a) Primer types, (b) Application methods, (c) Interaction, (d) Error, and (e) Total. Write your complete solution and create a table for the results ANSWER C,D,E
The Engineering group performed a factorial experiment to investigate the effect of paint primer type and application method on paint adhesion. The results for each combination of primer type and application method are shown below. Each combination has three specimens painted, then a finish paint was applied, and the adhesion force was measured. Compute for the following: (1) Sum of Squares, Degrees of Freedom, (3) Mean Square, (4) fo, and (5) P-Value for; (a) Primer types, (b) Application methods, (c) Interaction, (d) Error, and (e) Total. Write your complete solution and create a table for the results ANSWER 1,2,3,4
Is Echinacea Effective for Colds? Rhinoviruses typically cause common colds. In a test of the effectiveness of echinacea, 40 of the 45 subjects treated with echinacea developed rhi-novirus infections. In a placebo group, 88 of the 103 subjects developed rhinovirus infections (based on data from “An Evaluation of Echinacea Angustifolia in Experimental Rhinovirus Infections,” by Turner et al., New England Journal of Medicine, Vol. 353, No. 4). We want to use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections. a. Test the claim using a hypothesis test. b. Test the claim by constructing an appropriate confidence interval. c. Based on the results, does echinacea appear to have any effect on the infection rate?
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A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by PatientsOld Drug 1 2 2 4 6 New Drug 1 2 2 3 7Old Drug New Drug Total Sample(Ordered Smallest to Largest) RanksOld Drug New Drug Old Drug New DrugR1= R2= A) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05 level because the calculated U value of 12.5 is greater than the critical U value of 2.B) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05…
A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 2 2 4 6 New Drug 1 2 2 3 7 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug 1 1 1 1 1.5 1.5 2 2 2 2 4.5 4.5 2 2 2 2 4.5 4.5 4 3 3 7 6 7 4 8 6…
A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 3 3 4 6 New Drug 1 2 3 3 7

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