MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- You conduct a poll of FIU students in order to determine the percentage of students (p) who agree with the statement “Hot-dogs are one of my favorite foods”. In your poll, you find that 80 out of 100 students agree. You conduct a two-sided hypothesis test where H0: p = 0.7, where p is the proportion of students whose favorite food is hot dogs. Which of the following statements are true: I. You reject the null hypothesis when α = 0.05 II. You reject the null hypothesis when α = 0.01 III. The test statistic (Z) equals Z = +1.5 Group of answer choices II onlyarrow_forwardCalculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, z, =2.17, and c=0.10 b) one-tail (lower) test, zn = - 1.49, and a=0.05 c) two-tail test, zn = - 1.71, and o=0.05 d) two-tail test, z, =1.26, and c=0.02 Click here to view the first page of the standard normal table. Click here to view the second page of the standard normal table a) p-value = (Round to four decimal places as needed.) Determine whether or not to reject the null hypothesis. Choose the correct answer below. O A. Reject Ho, since the p-value is less than the significance level o. O B. Do not reject Ho, since the p-value is greater than or equal to the significance level d. O C. Do not reject Ho, since the p-value is less than the significance level o. O D. Reject Ho, since the p-value is greater than or equal to the significance level .arrow_forwardCalculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail test, z; = 1.40, and a = 0.02 b) one-tail test, z, = - 2.55, and a = 0.10 c) two-tail test, z, = 2.60, and a = 0.02 d) two-tail test, = - 1.66, and a = 0.05 Click here to view page 1 of the cumulative probabilities for the standard normal distribution. Click here to view page 2 of the cumulative probabilities for the standard normal distribution.arrow_forward
- Suppose you are conducting a hypothesis test and you find a P-value of .17. Is there sufficient evidence at a=0.10 to reject the Null Hypothesis? O not enough information to make a conclusion O yes O noarrow_forwardSuppose that in a random selection of 100 colored candies, 26% of them are blue. The candy company claims that the percentage of blue candies is equal to 28%. Use a 0.01 significance level to test that claim. Identify the null and alternative hypotheses for this test. Choose the correct answer below. А. Но: р30.28 H1:p0.28 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.)arrow_forwardAfter the football team once again lost a game to the college's archrival, the alumni association conducted a survey to see if alumni were in favor of firing the coach. An SRS of 100 alumni from the population of all living alumni was taken. Sixty-four of the alumni in the sample were in favor of firing the coach. Let p represent the proportion of all living alumni who favor firing the coach. The decision made from the above hypothesis test is that: O the observed sample proportion is not statistically significant, and the null hypothesis should be rejected. O the observed sample proportion is statistically significant, and the null hypothesis should be rejected. O the observed sample proportion is statistically significant, and the null hypothesis should not be rejected. O the observed sample proportion is not statistically significant, and the null hypothesis should not be rejected.arrow_forward
- Let p be the propotion of seniors who will play bingo. Based on a random sample of 175 seniors, 103 of them have said that they will play bingo. Using this data, test the null hypothesis that p=.5 versus the alternative that p>.5 at the alpha = .1 level. What is the p-value and conclusion of this test? Should you reject or fail to reject the hypothesis?arrow_forwardConsider a drug testing company that provides a test for marijuana usage. Among 335 tested subjects, results from 27 subjects were wrong (either a false positive or a false negative). Use a 0.05 significance level to test the claim that less than 10 percent of the test results are wrong. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.1 H1:p0.1 OC. Ho: p<0.1 H1:p=0.1 O D. Ho: p=0.1 H1:p+0.1arrow_forwardConsider the following hypothesis test: Но : д > 170 Ha : µ < 170 The value of the test statistic z = -2.12. Find the p-value. Select one: O a. 0.0170 O b. 0.9864 O c. 0.9830 O d. 0.0136arrow_forward
- Consider the following hypothesis test: Но : р 116 The value of the test statistic z = 1.12. Find the p-value. Select one: O a. 0.1131 O b. 0.1314 O c. 0.8869 O d. 0.2262 O e. 0.2628 O f.0.8686arrow_forwardConsider the following hypothesis test. H0: u1 - u2 ≤ 0Ha: u1 - u2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 30 n 2 = 50 x 1 = 25.7 x 2 = 22.1 σ 1 = 5.6 σ 2 = 7 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to 2 decimal places. c. With = .05, what is your hypothesis testing conclusion? p-value is H0arrow_forward27arrow_forward
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