ed on the survey, 65% of the participants are in favor of the candidates in party 1 while only 35% are in favor of party 2. Does this seem to indicate that party 1 will be more successful in the election as compared to party 2. What is the null and alternative hypothesis?
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Based on the survey, 65% of the participants are in favor of the candidates in party 1 while only 35% are in favor of party 2. Does this seem to indicate that party 1 will be more successful in the election as compared to party 2. What is the null and alternative hypothesis?
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- I conducted a study for a project where 20 students were surveyed asking them if they drink coffee or another caffeineted beverage before schoolwork and if so do they belive it helps their academic performance. 10 students did and 10 students did not. 4 students believed it helped and 6 students did not think it helped. I am to use either a (Test of Association hypothesis test), a (Goodness of Fit hypothesis test), a (Two sample hypothesis test for means) or a (Two sample hypothesis test for proportions). Which test do you think would be most appropriate?Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results 2018). In a recent survey of 150 randomly selected U.S. adults, 75 said they were in favor of the death penalty for those convicted of murder. Does this sample appear to come from a population with a lower proportion in favor of the death penalty? a) State the null and alternative hypotheses in words. b) State the null and alternative hypotheses using symbols. c) What type of test is this?Can you guys help me on this? Thank you!
- Minnesota had the highest turnout rate of any state for the 2016 presidential election. + Political analysts wonder if turnout in rural Minnesota was higher than turnout in the urban areas of the state. A sample shows that 627 of 836 registered voters from rural Minnesota voted in the 2016 presidential election, while 396 out of 550 registered voters from urban Minnesota voted. (a) Formulate the null and alternative hypotheses that can be used to test whether registered voters in rural Minnesota were more likely than registered voters in urban Minnesota to vote in the 2016 presidential election. (Let P₁ = the population proportion of voters in rural Minnesota who voted in the 2016 election and p₂ = the population proportion of voters in urban Minnesota who voted in the 2016 election.) Ho: P1 P2 ≥ 0 Ha: P₁ P₂ 0 Ho: P₁ P₂ = 0 Ha: P₁-P₂ #0 (b) What is the proportion of sampled registered voters in rural Minnesota that voted in the 2016 presidential election? (c) What is the proportion of…6) In an exit poll, 42 of 75 men sampled supported a ballot initiative to raise the local sales tax to build a new football stadium. In the same poll, 41 of 85 women sampled supported the initiative. Find and interpret the p-value for the test of hypothesis that the proportions of men and women who support the initiative are different.A researcher would like to test the claim that the proportion of middle-aged smokers with a lung capacity under 3 liters is less than the proportion of senior citizen nonsmokers with a lung capacity under 3 liters. A random sample of 46 middle-aged smokers had 32 with lung capacities under 3 liters, and a random sample of 46 senior citizen nonsmokers had 25 with lung capacities under 3 liters. These two independent samples will be used in a hypothesis test of this claim. Which test statistic formula should be used for this test? (1-₂)-(1-12) DII Ot= Ot= Oz= F3 Oz= F + VT 722 4 d-d 8d √n (P1-P₂) Submit Question O None of the above pq pq Vm + m (1₂) - (1-12) of V + 72₂ % 5 T (P1-P2) G A B FS 6 H F6 N & 7 U J PrtScn 8 FB K Home 9 F9 End 0 F10 P
- A legal researcher was interrested in gender differences in the willingness of prosecutrs to plea bargain. She recorded the number of times they plea bargained out of their last 10 cases for a sample of eight female prosecutors and seven male prosecutors. Table 2 shows the number of plea bargain cases by gender. Females Males 9 4 3 5 5 7 9 4 9 3 5 4 7 3 5 From performing a hypothesis test to determine if female and male prosecutors differ in their plea bargaining of cases what is the p value?06:23 A myopenmath.com You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly smaller than 73% at a level of significance of a = 0.01. According to your sample, 40 out of 59 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: ? O Select an answer > (please enter a decimal) H1: ? 0 Select an answer © (Please enter a decimal) c. The test statistic ? O (please show your answer to 3 decimal places.) d. The p-value (Please show your %3D answer to 4 decimal places.) e. The p-value is ? 0 f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly smaller than 73% at a = 0.01, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 73%. The data suggest the…A university is currently on the quarter system and is thinking of switching to a semester system. Administrators have heard that a majority of students oppose the switch. They conduct a survey to see if there is evidence of opposition to the switch. They will choose between two hypotheses: there is no clear preference, or the majority of students oppose the switch. Set up a hypothesis test to help the administrators. The data from the survey finds that 220 out of 400 students oppose. From this, you can compute a sample standard deviation. Should they switch or not?
- The National Academy of Science reported that 41% of research in mathematics is published by US authors. The mathematics chairperson of a prestigious university wishes to test the claim that this percentage is no longer 41%. He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 186 recent articles published by reputable mathematics research journals and finds that 92 of these articles have US authors. Does this evidence support the mathematics chairperson’s claim that the percentage is no longer 41%? Use a 0.05 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. circle the answer below. H0 p=0.41 ha: p⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯0.41 A.<B.≠C.> Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places Step 3 of 3: Draw a conclusion and interpret the decision. A. We reject the null hypothesis and conclude that there is insufficient evidence at a…February 12, 2009 marked the 20oth anniversary of Charles Darwin's birth. To celebrate, Gallup, a national polling organization, surveyed 1,018 randomly selected American adults about their education level and their beliefs about the theory of evolution. In their sample, 325 of their respondents had some college education and 228 were college graduates. Among the 325 respondents with some college education, 133 said that they believed in the theory of evolution. Among the 228 respondents who were college graduates, 121 said that they believed in the theory of evolution. Construct a 90% confidence interval for the difference between the proportions of college graduates and individuals with some college who believe in the theory of evolution. Round your sample proportions and margin of error to three decimal places. O 0.012 to 0.232 O 0.038 to 0.206 O 0.052 to 0.192 O 0.079 to 0.165 Save for Later Attempts: 0 of 1 used Submit AnswerAre freshmen psychology majors more likely to change their major before they graduate compared to freshmen business majors? 355 of the 619 freshmen psychology majors from a recent study changed their major before they graduated and 356 of the 679 freshmen business majors changed their major before they graduated. What can be concluded at the = 0.10 level of significance? For this study, we should use The null and alternative hypotheses would be: (please enter a decimal) (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The results are statistically insignificant at αα = 0.10, so there is statistically significant evidence to conclude that the population proportion of freshmen psychology majors who change their major…