A politician claims that he is supported by a clear majority of voters. In a recent survey, 24 out of 40 randomly selected voters indicated that they would vote for the politician. (You may find it useful to reference the appropriate table: z table or t table) a. Select the null and the alternative hypotheses. O Hg: p = 0.50; HA: p + 0.50 O Hg: p s 0.50; HA: p > 0.50 O Hg: p z 0.50; HA: p < 0.50 b. Calculate the sample proportion. (Round your answer to 2 decimal places.) Sample proportion

A politician claims that he is supported by a clear majority of voters. In a recent survey, 24 out of 40 randomly selected voters indicated that they would vote for the politician. (You may find it useful to reference the appropriate table: z table or t table) a. Select the null and the alternative hypotheses. O Hg: p = 0.50; HA: p + 0.50 O Hg: p s 0.50; HA: p > 0.50 O Hg: p z 0.50; HA: p < 0.50 b. Calculate the sample proportion. (Round your answer to 2 decimal places.) Sample proportion

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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Need help with C , D and H please
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly smaller than 59% at a level of significance of a = 0.10. According to your sample, 37 out of 69 potential voters prefer the Democratic candidate.
Suppose that you want to perform a hypothesis test for a population mean, μ. a. Express the null hypothesis both in words and in symbolic form. b. Express each of the three possible alternative hypotheses in words and in symbolic form.
A radio station states that 30% of the songs they play each week are from Canadian artists. A DJ working at the station claims that the actual percentage differs from what the station states. The DJ takes a random sample of 87 songs played during a given week and finds that 28 of them are from Canadian artists. Use this information to answer the questions below. a. Suppose the DJ wishes to perform a hypothesis test of his claim. Select the most appropriate null and alternative hypotheses for this hypothesis test. H0:p^≠0.3Ha:p^=0.3 H0:x―=0.3Ha:x―≠0.3 H0:μ≠0.3Ha:μ=0.3 H0:p=0.3Ha:p≠0.3 H0:μ=0.3Ha:μ≠0.3 H0:p≠0.3Ha:p=0.3 H0:p^=0.3Ha:p^≠0.3 H0:x―≠0.3Ha:x―=0.3 b. To assess his hypothesis, the DJ wants to compute a bootstrap-based confidence interval from his sample. Which of the following uses of the quantile() function would produce the correct interval bounds for a 96% bootstrap-based confidence interval? c(quantile(B$mean, 0.04), quantile(B$mean, 0.96)) c(quantile(B$mean, 0.02),…
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
Shipping Data Table Week 1 Day Monday Tuesday Wednesday Thursday Friday Tons 178 143 144 157 182 Week 2 Day Monday Tuesday Wednesday Thursday Friday Tons 170 138 132 143 178 Day Monday Tuesday Week 3 Wednesday Thursday Friday Tons 164 129 126 138 170 0
Researchers conducted a study to determine whether the majority of community college students plan to vote in the next presidential election. They surveyed 650 randomly selected community college students and found that 55% of them plan to vote. Which of the following are the appropriate null and alternative hypotheses for this research question? H 0 : p = 0.50 Ha: p ≠ 0.50 H 0 : p = 0.50 Ha: p > 0.50 H 0 : p = 0.55 Ha: p ≠ 0.55 H 0 : μ = 0.55 Ha: μ > 0.55
The size of the p-value is influenced by the type of alternative hypothesis (either one or two-tailed). Group of answer choices True False
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 72% at a level of significance of a = 0.10. According to your sample, 63 out of 83 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: v Select an answer v (please enter a decimal) H1: ? v Select an answer v (Please enter a decimal) c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different from 72% at a = 0.10, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different from 72%. O The data suggest the…
Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Six years ago, 11.4% of registered births were to teenage mothers. A sociologist believes that the percentage has increased since then. Which of the following is the correct conclusion? O A. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O B. There is sufficient evidence to conclude that the percentage of teenage mothers has increased. O C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O D. There is not sufficient evidence to conclude that the percentage of teenage mothers has increased.
need help with B, C, D
need help with B, C, D