Perform an appropriate hypothesis test to answer the above research question. What is the Null Hypothesis H0. Ho: GenderBack Pain Back Pain No TotalYesFemale283563Male181937Total4654100

Solution-: We find null hypothesis from given 2X2 contingency table: Back Pain Total Gender…

Answered: Gender Back Pain Back Pain No Total Yes…

Math

Statistics

Gender Back Pain Back Pain No Total Yes Female 28 35 63 Male 18 19 37 Total 46 54 100

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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A Maps egnu A survey was conducted that asked AHC (Population 1) students and Cuesta students if they drive to school. The calculator output from a hypothesis test looks like this: 2-PropZTest Pi # p2 Z = 2.8 p = 0.006 Pi = 0.65 ng Online p2 = 0.73 ve p = 0.682 cover a. What was the claim? m Proctor O AHC students are more likely than Cuesta students to drive to school OA higher number of AHC than Cuesta students drive to school O On average, the same number of AHC students and Cuesta students drive to school oom O AHC and Cuesta students are equally likely to drive to school b. Was the test statistically significant at a = 0.05? O No, since 0.006 > 0.05 O No, since 0.682 > 0.05 O Yes, since 0.006 0.05 c. What percentage of the AHC students drive to school? d. What is the combined percentage of AHC and Cuesta students that drive to school?
A store owner wanted to determine if more than 5% of customers made a purchase after he sent out a text. He sent out 300 texts to 300 randomly selected customers. Out of those 300, 17 made purchases. Is this evidence that if he sent out texts to all of his customers more than 5% would make purchases? What is the appropriate null and alternative hypothesis? Ho: p= 0.05 Ha: p> 0.05 O Ho: phat = 0.05 Ha: phat > 0.05 O Ho: p= 0.056 Ha: p > 0.056 O Ho: mu = 0.05 Hla: mu > 0.05
A highly selective MBA program wants their students' average score on the GMAT exam to be greater than 650. They want to be able to assert with 95% confidence that this is true in their admissions materials. Select the correct symbols to use in the null hypothesis for this hypothesis test. Ho: [ Select ] [ Select ] V 650.
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
Which of the following is not a correct way to state a null hypothesis? A Ho:P1- P2= o B Ho: H1 - H2 =0 C Ho: H=0 D Ho: p=0.5
View the information below and respond accordingly. When you perform a hypothesis test, there are four possible outcomes depending on the actual truth (or falseness) of the null hypothesis H0 and the decision to reject or not. The outcomes are summarized in the following table: Table 9.2 ACTION H0 IS ACTUALLY True H0 IS ACTUALLY False Do not reject H0 Correct Outcome Type II error Reject H0 Type I Error Correct Outcome
I. M. Schurr claims that students enjoy online classes more than professors. In order to test his claim, Schurr takes a sample of 60 students and determines 80% of the students enjoy online classes. For a sample of 40 professors, Schurr finds that 55% of the professors enjoy online classes. Do the data support Schurr’s claim that students enjoy online classes more than professors? a. State the null and alternative hypothesis that would be used to test whether students enjoy online classes more than professors.b. What is the appropriate test statistic?c. Determine the critical value(s) for this test using a 1% significance level.d. Calculate the value of the test statistic.e. What is your decision and conclusion?
The smaller the P-value, the ______ support for the alternate hypothesis -More -Less
Brett is a huge sports fan. He hypothesized half of sports fans liked football the best, 25% liked baseball the best, 15% liked basketball the best, and 5% liked hockey the best, and the rest liked some other sport the best. He surveyed 500 sports fans and asked what sport they liked the best. Which of the following is the way to calculate the number of these 500 sports fans expected to say that basketball is their favorite sport if the null hypothesis is true? ...... Choose the correct answer below. A. (500)(0.20) B. 500 - (500)(0.20) 500 C. 0.15 D. (500)(0.15)
The mean SAT score in mathematics is 478 . The founders of a nationwide SAT preparation course claim that graduates of the course score higher, on average, than the national mean. Suppose that the founders of the course want to carry out a hypothesis test to see if their claim has merit. State the null hypothesis H0 and the alternative hypothesis H1 that they would use. H0 : H1 :
Students in a Psychology Stats class gathered 1st and 2nd year university students to gather self-report data on UFO, sightings during the past year. A year later the same students took the survey after taking LSD. The results of the self-report survey are as follows: Participant ID UFO sightings UFO sightings before LSD after LSD 1 1 2 1 3 2 2 4 1 3 3 1 7 3 A) State the Null and Alternative Hypothesis. B) Find the calculated "t" value and the critical "t" value C) State weather to accept or reject the Null Hypothesis
Historically, 72% of students who take the PREPWell SAT preparation course improve their scores (where "improvement" denotes a score increase of at least 10 points). A new version of the PREPWell course is tested on a random sample of students, and 75% of them improve their scores. The PREPWell company is conducting a hypothesis test to determine whether the new version of the course actually gives better results. The hypotheses are H0: p = 0.72 Ha: p > 0.72 where p = the proportion of all students taking the new version of the PREPWell course that will improve their SAT scores For each description below, choose from the drop-down list to indicate which decision (A, B, or C) corresponds to it. (Each decision choice can be used once, more than once, or not at all.) Possible decisions:           A.  Reject the null hypothesis               B.  Do not reject the null hypothesis               C. Accept the null hypotheses Even though the proportion of students with…