a) What are the correct null and alternative hypotheses in this situation? A) Ho: H= 40 vs. Ha:u< 40 B) Họ: H = 40 vs. Hai u# 40 C) Họ: H = 38 vs. Ha: H< 38 D) Họ: µ = 38 vs. Ha H# 38 Selection: (b) Which of the following calculator screens represents this significance test?
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- Which of the elements of a test of hypothesis can and should be specified prior to analyzing the data that are to be used to conduct the test?If the null hypothesis in a t-test for two samples is not rejected, what conclusion can be drawn about the two means of the categorical variable? Assume you collected larger samples of individuals to test your null hypothesis in question #1. Specifically, the sample sizes increased to 200 subjects in each group. Do your results and conclusions change from the test of the smaller sample sizes? (You must show your work).A vehicle is advertised as having a gas mileage rating of at least 30 miles/gallon in highway driving. The miles per gallon obtained in 10 independent experiments are: 24, 25, 26, 20, 27, 25, 28, 26, 30, 33 For the null hypotheses µ ≥ 30, what is the significance level at which it can be accepted?
- A very small p-value is strong evidence for the Ha (Alternative Hypothesis). Select one: True FalseWhat is the p-value if, in a two-tail hypothesis test, ZSTAT=+1.16? p-value=Is there a difference between community college statistics students and university statistics students in what technology they use on their homework? Of the randomly selected community college students 55 used a computer, 88 used a calculator with built in statistics functions, and 20 used a table from the textbook. Of the randomly selected university students 47 used a computer, 85 used a calculator with built in statistics functions, and 36 used a table from the textbook. Conduct the appropriate hypothesis test using an αα = 0.10 level of significance. What is the correct statistical test to use? Goodness-of-Fit Paired t-test Homogeneity Independence What are the null and alternative hypotheses?H0:H0: Type of student and type of technology used for statistics homework are dependent. The distribution of the technology that community college statistics students use for their homework is the same as the distribution of the technology that university statistics students use for…
- A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2795occupants not wearing seat belts, 36 were killed. Among 7682 occupants wearing seat belts, 15 were killed. Use a. 0.01significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1=p2 H1: p1≠p2 B. H0: p1≥p2 H1: p1≠p2 C. H0: p1=p2 H1: p1<p2 D. H0: p1≠p2 H1: p1=p2 E. H0: p1≤p2 H1: p1≠p2 F. H0: p1=p2 H1: p1>p2 Identify the test statistic. z= ? (Round to two decimal places as needed.) Identify the P-value. P-value= ? (Round to three decimal…I need help solving for the p-value for this hypothesis testOnly 26% of psychology majors are satisfied with their career paths as compared to 50% of accounting majors (The Wall Street Journal, October 11, 2010). Suppose these results were obtained from a survey of 300 psychology majors and 350 accounting majors.Let p1 represent the population proportion of satisfied accounting majors and p2 the population proportion of satisfied psychology majors. a. Develop the appropriate null and alternative hypotheses to test whether the proportion of accounting majors satisfied with their career paths differs from psychology majors by more than 20 percentage points. multiple choice 1 H0: p1 − p2 = 0.20; HA: p1 − p2 ≠ 0.20 H0: p1 − p2 ≤ 0.20; HA: p1 − p2 > 0.20 H0: p1 − p2 ≥ 0.20; HA: p1 − p2 < 0.20 b. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) c. Find the p-value. multiple choice 2 p-value < 0.01 0.01 ≤…
- : The Center for the Study of Violence wants to determine whether a conflict-resolution program in a particular high school alters aggressive behavior among its students. For 10 students, aggression was measured both before and after they participated in the conflict-resolution course. Students Before Participating After Participating 1 10 8 2 3 3 3 4 1 4 8 5 5 8 7 6 9 8 7 5 1 8 7 5 9 1 2 10 7 6 From performing a hypothesis test to determine if the aggression does not differ as a result of the participation in the program, what is the p-value?What is the value of the test statistic for a test with a null hypothesis that mu = 83, Xbar = 87, the standard error = 2 and n = 50?If a null hypothesis is not rejected at the 0.10 level of significance, it 1 must be rejected at the 0.05 level of significance. 2 might be rejected at the 0.05 level of significance. 3 will not be rejected at the 0.05 level of significance. 4 must be rejected at the 0.01 level of significance.