A. Find the value of the test statistic. (Round your answer to two or more decimal places.)B. Find the p-value. (Round your answer to three or more decimal places.)C. Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses? ObservedfrequencyfoExpectedfrequencySE2(fo-fe)JEA176145B1551456.628 0.6897C125D124145.00 145.002.759 3.041Total580 More than one teacher has given the following advice: choose answer C when blindly guessing among four answers in a multiple choice test, since C is moreoften the correct answer than either A, B, or D.Suppose that we take a random sample of 580 correct answers from multiple-choice tests for introductory college courses and obtain the informationsummarized by the first row of numbers in the table below. These numbers are the observed frequencies for the categories A, B, C, and D for our sample of580 correct answers. The second row of numbers contains the frequencies expected for a sample of 580 correct answers if a correct answer is equally likely tobe A, B, C, or D. The bottom row of numbers contains the following value for each of the correct answer categories A, B, C, and D.(fo-fE)²ƒE(Observed frequency - Expected frequency)²Expected frequency

A. Find the value of the test statistic. (Round your answer to two or more decimal places.) B. Find the p-value. (Round your answer to three or more decimal places.) C. Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses?

A. Find the value of the test statistic. (Round your answer to two or more decimal places.) B. Find the p-value. (Round your answer to three or more decimal places.) C. Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Homa An education researcher claims that 60% of college students work year-round. In a random sample of 300 college students, 180 say they work year-round. Al a=0.05, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. O C. Atleast % of college students work year-round. book OD. The percentage of college students who work year-round is not %. cer Contents Let p be the population proportion of successes, where a success is a college student who works year-round. State Ho and H. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho p# GB. H, p=0.60 media Library OC. Ho P Plan OF. Ho ps H, p Tor Success (b) Find the critical value(s) and identify the rejection region(s). sible Resources Identify the critical value(s) for this test. for Success %3D (Round to two decimal places as needed. Use a comma to separate answers as needed.) Clear all Check answer View an…
Find A. Hypothesis and identify claim B. Compute test value C. Find p value D. Make decision E. Summarize results
Claim: : P = 0.23; a 0.10; Sample Statistics : P = 0.17₁ n = 100 A.) Find the 2- test static. Select the Correct Choice below and, if necessary, fill in the answer box to Complete Your choice. 2 = ( Round to two decimal places as needed) 0 3.) What is the result of the test Reject or fail to reject? ?
A public opinion poll surveyed a simple random sample of voters. Respondents were classified by gender (female or male) and by voting preference (Republican, Democrat, or Independent). The results are presented here: Republican 261 202 Female Male You want to determine if gender and voting preference are independent. Use a level of significance of a = 0.05. What is the test statistic for this test? (Round your answer to three decimal places.) Democrat 239 181 Independent 42 62
See details to question in attached pic
Need help with parts C & D The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An acupuncturist claims that her treatment can reduce this figure significantly. A random sample of 191 Americans is administered the acupuncturists treatment and 25 report experiencing migraines.a. State Hypotheses to the scenario using the correct symbols. b. What is the sample proportion? (Round to 2 decimal places) ˆpp^= c. Suppose the P-value is calculated to be 0.0318What would your decision be for this test using α=α= 0.025? fail to reject the null accept the null reject the null d. Write a conclusion in terms of the acupuncturist's claim. Use the model provided by the instructor. Assume no errors were made.
1
1.Determine the test statistic. (Round to three decimal places as needed.) 2.Determine the P-value of the test statistic. (Round to four decimal places as needed.) 3. use 0.01 significance to test the claim
Microsoft Word -... You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 62% at a level of significance of a = 0.05. According to your sample, 27 out of 50 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Select an answer v Ho: ? H₁: ? Select an answer ✓ c. The test statistic ? = d. The p-value= e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) The data suggest the populaton proportion is significantly different from 62% at a = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 62% O The data suggest the…
Net Worth. The Board of Governors of the Federal Reserve System publishes information on family net worth in the Survey of Consumer Finances. In 2010, the mean net worth of families in the United States was $498.8 thousand and the median net worth was $77.3 thousand. Which measure of center do you think is more appropriate? Explain your answer.