Consider a multinomial experiment with n=320 and k=4. The null hypothesis to be tested is Hg: P1 = P2 P3 P4 = 0.25. Theobserved frequencies resulting from the experiment are: (You may find it useful to reference the appropriate table: chi-square taor E table)CategoryFrequency488539089a. Choose the appropriate alternative hypothesis.O Not all population proportions are equal to 0.25.O All population proportions differ from 0.25.b-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3decimal places.)Test statistic< Prev.Next >4 of 10aere to search b-2. Find the p-value.O 0.025 B p-value < 0.05O p-value <0.01O 0.015 p-value <0.025p-value 0.10O 0.05 p-value <0.10c. At the 10% significance level, what is the conclusion to the hypothesis test?O Reject Hg since the p-value is greater than the significance level.O Do not reject Hg since the p-value is greater than the significance level.O Reject Hg since the p-value is less than the significance level.O Do not reject H, since the p-value is less than the significance level.rev: 06 10 2019 QC_CS-170121, 07 23 2020 QC CS-220209Prev4 of 10Next- search

We are testing that if all proportion are 0.25 or not for that we will use chi square goodness of…

Consider a multinomial experiment with n=320 and k=4. The null hypothesis to be tested is Hg: P1 = P2 P3 P4 = 0.25. The observed frequencies resulting from the experiment are: (You may find it useful to reference the appropriate table: chi-square to or F table) Category Frequency 1 4 88 53 90 89 a. Choose the appropriate alternative hypothesis. O Not all population proportions are equal to 0.25. O All population proportions differ from 0.25. b-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test statistic

Consider a multinomial experiment with n=320 and k=4. The null hypothesis to be tested is Hg: P1 = P2 P3 P4 = 0.25. The observed frequencies resulting from the experiment are: (You may find it useful to reference the appropriate table: chi-square to or F table) Category Frequency 1 4 88 53 90 89 a. Choose the appropriate alternative hypothesis. O Not all population proportions are equal to 0.25. O All population proportions differ from 0.25. b-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test statistic

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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Chapter 9: Hypothesis Tests for a Single Population Proportion Score: 4/14 4/14 answered Question 1 Test the claim that the proportion of men who own cats is smaller than 20% at the 0.01 significance level. The null and alternative hypothesis would be: Ho:p > 0.2 Ho:p= 0.2 Ho:p 0.2 H1:p 0.2 H1:µ 7 0.2 H1:µ > 0.2 H1:p< 0.2 The test is: two-tailed left-tailed right-tailed Based on a sample of 600 people, 15% owned cats The test statistic is: (to 2 decimals) The critical value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis Question Help: Message instructor Submit Question ch
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If Lynell requires her results to be statistically significant at level ?=0.05α=0.05, choose the correct decision for her to make about this test, along with the correct reason for making that decision. Reject ?0H0, because the ?P-value is less than 0.05. Fail to reject ?0H0, because the the difference between the sample count and the expected count is −12.00−12.00, which is too small to be significant. Fail to reject ?0H0, because the ?P-value is less than 0.05. Reject ?0H0, because the ?P-value is greater than 0.01.
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1. Teacher Joy conducted a census in her class and she found out that the average time spent for studying is 2.25 hours, average height is 147 cm, and a random sample of 10 students got an average grade of 87%. Which is the statistic?A. 2.25 hoursB. 10 studentsC. 87%D. 147 cm2.. Suppose the null hypothesis states that the mean is less than or equal to 50 kg and the alternative hypothesis states that the mean is greater than 50 kg. Which of the following would commit Type I error?A. Conclude that µ = 50 kg when the truth is µ > 50 kg.B. Conclude that µ > 50 kg when the truth is µ = 50 kg.C. Conclude that µ = 50 kg when the truth is µ < 50 kg.D. Conclude that µ < 50 kg when the truth is µ = 50 kg.3. What variable can the researcher freely manipulate in a study?A. dependent variableB. independent variableC. both the independent and dependent variableD. neither the independent nor the dependent variable
The one-sample ?‑statistic for a test of ?0:?=0 versus ?1:?≠0 based on ?=15 observations has the value ?=−2.138, where ?0 and ?1 are the null and alternative hypotheses, respectively. The sample size is denoted by ?. Use this ?‑table to determine which two ?-values bracket the ?-value of the test. Report your answer as listed in the given ?‑table.
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Do question 7,8 and 9 only The new study also carried out a test to determine whether the population proportion of unvaccinated school children contracting winter flu was higher than the population proportion of vaccinated school children. The Z test statistic to test this belief is found to be 1.874. The corresponding p-value is 0.0305 0.1212 0.3036 0.7724 Question 7 Suppose that the new study uses a level of significance of 0.05 to test the claim in Question 6. The probability of Type I error is 0.025 0.05 0.95 0.975 Question 8 Based on previous studies of school children who were vaccinated and contracted the flu, the time in hours that the flu symptoms last is assumed to follow a normal distribution with a mean of 20.7 hours and a standard deviation of 7.3 hours. The probability that a randomly selected school child has flu symptoms for more than 24 hours is 0.1628 0.3256 0.6744 0.8372 Question 9 Suppose that a random sample of 5 vaccinated school children is taken. Assuming the…
We have provided a sample mean, sample size, and population standard deviation. In each case, use the one-mean z-test to perform the required hypothesis test at the 5% significance level. x = 20, n = 24, σ = 4, H0: μ = 22, Ha: μ ≠ 22
Ida Find the P-value for the following values of the test statistic t, Sample size n, and alternate hypothesis H1. If you use table A. 3, you may specify that is between two values. t = -1.584, n = 19, H₁:μ ‡μO
A sample is selected from a normal population with µ = 54 and σ = 8. Which of the following samples would be considered extreme and unrepresentative for this population? A. M = 53 and n = 81 B. M = 52 and n = 36 C. M = 53 and n = 36 D. M = 52 and n = 81
Given the two independent samples below, conduct a hypothesis test for the desired scenario. Assume all populations are approximately normally distributed. Sample 1 Sample 2 110 n2 : 179 28.9 23.6 81 = 3.8 82 = 3.9 Test the claim: Given the null and alternative hypotheses below, conduct a hypothesis test for a = 0.05. Ho: H1 = 42 Ha: H1 < 42 a. Given the alternative hypothesis, the test is Select an answer b. Determine the test statistic. Round to four decimal places. t = c. Find the p-value. Round to 4 decimals. с. p-value = d. Make a decision. O Fail to reject the null hypothesis. O Reject the null hypothesis.