The Rossman Chance applet was used to create a simulated distribution of 1000sample statistics. The resulting simulated distribution is shown above. The applet isalso showing the relevant information for the theory-based approach because the"Normal Approximation" box has been checked.(a) What is the sample statistic?(b) Which symbol is used for the statistic in this problem?Ofxπ(c) Which hypotheses are being tested?O Ho: π = 240Ha: π < 240O Ho: μ = 0.001Ha: μ< 0.001Ο Ηo: μ = 240Ha: μ < 240O Ho: μ = 230Ha: μ < 230 Statistic: Mean O Median Ot-statisticCount06Mean=239.806SD 3.348Num samples=1000231238Sample means245252Scale: Population Rescale O Fixed✓230Count Samples Less than ≤Count = 1/1000 (0.0010)Overlay Normal Distribution:theory-based p-value = 0.0014Count

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Answered: The Rossman Chance applet was used to…

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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Part I [15 poins]: 1. Suppose you were to explain to a person who has not yet studied statistics that a statistical test has just resulted in the rejection of the null hypothesis that a population mean u is equal to 0. That is, H:H = 0. has been rejected, say, at the 5 percent level of significance. Which of the following is a more accurate statement? (a) The evidence of the data indicated that the population mean differs significantly from 0. (b) The evidence of the data was significant enough to indicate that the population mean differs from 0.
: A study is conducted to compare the effectiveness of three different teaching methods (A, B, and C) on exam scores of 30 students. The Friedman Test is performed, and the calculated chi-square statistic is 20. What is the p-value for this test?
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R4
1. Question: Testing simple hypotheses of the parameters of two-population is based on the following methods? a. The Neyman-Pearson Theorem b. Chi-square test c. The Confidence intervals of the difference of the parameters. d. Most powerful test technique e. All of the above.
A high school conducts a dependent sample experiment to test if there is a difference between the number of times students are absent in the fall and winter months. You have data for the following 5 students: STUDENT FALL WINTER 1 2 3 4 5 2 0 1 2 O What do you conclude about this school's absences? (Assume standard a = 0.05) 2 1 2 4 T O There is no difference between the Fall and Winter months. O There is a statistically significant difference between the Fall and Winter months. There is a difference but it is only somewhat statistically significant. There is not enough data to determine if there is a difference in absences.
part F G
If s = 15 and the estimated standard error is 5, then the sample size must be equal to ______.
(a) The sample has size 10, and it is from a population with a distribution about which we know very little. OZ = 0 -0 Ot= O It is unclear which test statistic to use.
4 In the case of one sample hypothesis, if z = -1.85, sign of H1 is <; thus, P-value equals: (Write 4 decimal places) Answer:
A researcher claims that the incidence of a certain type of cancer is less than 5%. To test this claim, the a random sample of 4000 people are checked and 170 are determined to have the cancer. The following is the setup for this hypothesis test: Ho p 0.05 Ha :p< 0.05 In this example, the p-value was determined to be 0.015. come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%) Select the correct answer below O The decision is to reject the Null Hypothesis. The conclusion is that there is enough evidence to support the claim o The decision is to fail to reject the Null Hypothesis. The conclusion is that there is not enough evidence to support the claim.
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