D Question 3 20 pts Consider the random sample of college students. Data on gender and Full or Part-time student course load. Full Time Part-time Male 16 Female 10 14 Use the data to test for independence between Gender and Full or Part-time status. Use a 5% level of significance. Assume all requirements have been met. 1. What is the tail of the test? [Select ] 2. Find the P-value. [Select] 3. Will the null hypothesis be rejected? (Select] 4. Do gender and student status appear to be independent? [Select]

D Question 3 20 pts Consider the random sample of college students. Data on gender and Full or Part-time student course load. Full Time Part-time Male 16 Female 10 14 Use the data to test for independence between Gender and Full or Part-time status. Use a 5% level of significance. Assume all requirements have been met. 1. What is the tail of the test? [Select ] 2. Find the P-value. [Select] 3. Will the null hypothesis be rejected? (Select] 4. Do gender and student status appear to be independent? [Select]

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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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Listed below are the lead concentrations in μg/g measured in different traditional medicines. Use a 0.10 significance level to test the claim that the mean lead concentration for all such medicines is less than17 μg/g. Assume that the sample is a simple random sample. 13.5, 22.5, 7.5, 17, 22, 15.5, 9, 15.5, 5, 6 Determine the test statistics.
Decide which of the following statistical procedureswould most likely be used to answer the research questions posed:a independent samples t-testb analysis of variancec single sample t-testd paired samples t-teste construct a confidence interval 14. Do scores on a test of science achievement differ for female and male 8th grade students? 15. A group of office mates decide to go on a diet. They each measure their weight pre-diet and providetheir ideal weight. After the dieting plan a few months later, each person is weighed. Is there a differencepre-dieting and post dieting?
Question Help Instructor-created question Sham Magnet H1 Researchers conducted a study to determine whether magnets can affect back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The results are a measure of reduction in back pain. Assume that the two samples H are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.05 significance level to test thế claim that those treated with magnets have a different mean reduction in than those given a sham treatment. P2 10 10 0.54 0.45 5. 0.62 1.49 pain What are the null and alternative hypotheses? O A. Ho: H1 H2 O C. Ho H1 H2 O D. Ho: H1= H2 H1 P1 H2 ents Upper critical value is: (Round to three decimal places as needed.) Lower critical value is: (Round to three decimal places as needed.) cess Library Click to select your answer(s) and then click Check Answer. Clear All Check…
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cal Science Number of kernels in corn of different sizes. 5. Number of players in a group playing the game "the boat is sinking." O Number of passengers in different luxury cruise ships. Independent Activity 2 Give examples of at least two pairs of data that will most likely yield different variance and standard deviation. Identify the one with a higher possible value of variance and explain why.
A male and a female Judge rated the same cartoon segments for violent content. Using the data below, determine whether there is a significant tendency for the female judge to give higher ratings than the male judge. Use a one tailed test at the .05 significance level. Show your work through each step Cartoon segment Male Judge Female Judge 1 2 4 2 1 2 3 8 7 4 0 1 5 2 5 6 7 9 Calculate Cohens d or argue why its not appropriate in this…
Do Predicted Temperatures match Actual Temperatures? The table shows the predicted and actual temperatures for a seven day period. Assume that the two samples are randomly selected. At the 0.1 significance level, test the claim that there is no mean difference in the predicted and actual temperatures.(Be sure to subtract in the same direction). Predicted Temperatures ⁰F Actual Temperatures ⁰F Difference ⁰F 81 76 75 79 86 83 85 90 82 82 77 78 78 80 What are the correct hypotheses? (Select the correct symbols and values.)H0: Select an answer p μ₁ s₁² μ(d) σ₁² x̄₂ μ x̄₁ ? < = > ≥ ≠ ≤ Select an answer s₁² μ 0 σ₁² μ₂ μ₁ x̄₁ p x̄₂ H1: Select an answer μ₂ x̄₁ x̄₂ p μ s₂² μ₁ μ(d) σ₂² ? ≤ ≠ > ≥ < = Select an answer μ₂ x̄₂ μ 0 σ₁² x̄₁ μ₁ p s₁² Original Claim = Select an answer H₁ H₀ df = Based on the hypotheses, find the following: Test Statistic = (Round to three decimal places.)Critical value(s) = ±± (Round to three decimal…
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Another organization wants to perform a similar analysis on Department A’s and Department B’s performance evaluation scores. What is the Null Hypothesis (Ho:)? What is the Research Question or Alternative Hypothesis (Ha:)? Perform the t-Test and show the results (two sample assume equal variance). Dept A Dept B 3.1 3.1 3.6 3.1 3.2 3.2 3.5 3.4 3.1 3.2 2.9 3.3 3.5 3.1 3.6 2.9 3.7 3.1 3.5 3.6 2.9 3.2 3.2 3.3 3.6 3.4 3.5 3.3 3.4 3.1 2.9 2.8 3.4 2.9 3.3 3.1 3.5 3.2 3.4 3.1
2. A data set includes data from student evaluations of courses. The summary statistics arean = 80, �̅= 4.39, s = 2.29. Use a 0.05 significance level to test the claim that the population ofstudent course evaluations has a mean equal to 4.50. (Assume that a simple random sample hasbeen selected.)a. Is this claim about a population proportion or mean?b. What is the null hypothesis, and what is the alternative hypothesis?c. Is the test two-tailed, left-tailed, or right-tailed?d. What is the P-value? (Include a copy of your StatCrunch results.)e. What is the final conclusion?
Jennifer, a college student, would like to make the claim that the average amount that students spend on textbooks each semester is more than $225. Jennifer samples 16 of her classmates and obtains a sample mean of $244. At the 2.5% significance level, should Jennifer reject or fail to reject the null hypothesis given the sample data below? • Ho : µ= $225; H : µ > $225 a = 0.025 (significance level) test statistic = 2.51 Use the graph below to select the type of test (left-, right-, or two-tailed). Then set the a and the test statistic to determine the p-value. Use the results to determine whether to reject or fail to reject the null hypothesis. Move the blue dot to choose the appropriate test Significance level = 0.025 a=0.01 a=0.025 a=0.05 a=0.1 p-value = 0.834 -1 test statistic = 0.97 Z= -1.96