Write the null and alternative hypothesis. You must use statistical notation to express the hypothesis 12345- 6978131âLA@2SDrivingA research team studied the relationship between light alcohol consumption anddriving when the driver is already sleep deprived. 62 men were recruited andasked to complete a simulated two-hour highway drive in the lab. They wererandomly assigned to two treatment groups. Each group has 31 men. In the firstgroup, the participants drank a glass of beer before driving. In the second group,the participants drank a glass of water before driving. The computer recordedhow many times a driver drifted out of the lane. The night before their visit to thelab, all 62 participants restricted their sleep time to no more than 5 hours.See below for the summary statistics of the data. Let X be the number of times a .driver drifts out of the lane during the simulated 2-hour highway drive. Let S bethe sample standard deviation of X.First treatment group1=32S₁-3.7W ...3XSecond treatment group€2=18xS$₂=2.9Use a hypothesis test at 0.05 significance level to answer the question: does lightalcohol consumption (having one glass of beer) have a negative impact on thedriving performance of a sleep-deprived driver? Assume that the conditions forhypothesis testing are met.commandF2HHome Lbartleby↑#3EDC20F3يی$544 {isذ6RLLFF4G:11:J. >%58cL06T ...F5GA10لBrYMacBook AirĴFOH87&28. UغNAdF7J!*o: W12ptE12pt8 A12ptWrite the null and alternative hypotheses. You must use the statistical notation(for example, p, u, etc.) to express the hypotheses.IDIIFBCompute the test statistic. Please show your work.→>> BIU A А -BIU A AParagraph(9K3:4ؤ MXSKNY9ParagraphParagraph)9C.<IDDFOH)OV6(.YPEΛ·commandAF10-Ixx₂=6fx..IN1てnalt{لالهاF11أىACLUY?optionxx₂ #E+ 11=NS11A UpdateCoJ)F1210delete

Hypothesis Testing: In many instances, a business researcher wants to test the differences in the…

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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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In a class of 20 students, the instructor gave two exams, one take home exam and one live exam. She inspected the answers of the students and scored them for their similarity to rest of the class (see the table on the next page). Was the similarity of the answers higher in the Take Home exam or Live Exam? Perform a hypothesis test on differences to make your decision, use α = 0.05.
Show all solution Suppose a gambler wins P50 if the sum of dots in a toss of a pair of fair dice is either 7 or 11, and loses P10, otherwise. Find the expected gain.
review(31a) MAKE SURE YOU SELECT TWO ANSWERS FOR THIS QUESTION.. Type of test and hypotheses. Professor dill wonders if male and female earn significantlly differnent grades, when taking the same course with the same instructor. He randomly samples 160 males. and 100 females. The males receive 20 A's, 32 B's 70 C's 30 D's, anf 8 F's.The female receive 20'A's, 28 B's, 30 C's, and 10 D's. and 12 F's; His hypotheses is that gender and grades are related. Choose the type of test you should choose to test the hypotheses in symbol notation( or in words if symbol is not appropriate) (a) Z test (b)single sample t test (c)dependent t test (d) independent t test (e) Pearson correlation coeffieient. (f) ANOVA (g) chi Square goodness of fit test (h)Chi Square test of independence (i) Ho: u1-u2=0 H1: u1-u2!=0 (j) Ho: u1-u2 =0 H1:u1-u2<0 (k) Ho: u1-u2 >= 0 H1: u1=u2<0 (l) Ho : Rho=0 H1: Rho!=0 (m) Ho: Rho >= 0 H1: Rho <0 (n) Ho:Rho <= 0 H1: Rho >…
Can you please help me with this problem. If you can please answer the z question and the one bellow it. I can figure out the multiple choice questions out. I just need to figure out how to get the z and the p value. Thank you.
Describe about two tail test.
Diagnostic tests of medical conditions can have several types of results. The test result can be positive or negative, whether or not a patient has the condition. A positive test (+) indicates that the patient has the condition. A negative test (−) indicates that the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 200 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for a condition are shown. Condition Present Condition Absent Row Total Test Result + 106 24 130 Test Result − 19 51 70 Column Total 125 75 200 Assume the sample is representative of the entire population. For a person selected at random, compute the following probabilities. (Enter your answers as fractions.) (a) P(+ | condition present); this is known as the sensitivity of a test. (b) P(− | condition present);…
Diagnostic tests of medical conditions have several results. The rest result can be positive or negative. A positive test (+) indicates the patient has the condition. A negative test (–) indicates the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 137 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for the condition are shown. Condition Present Condition Absent Row Total Test Result + 119 18 137 Test Result – 18 46 64 Column Total 137 64 201 Assume that the sample is representative of the entire population. For a person selected at random, find P(getting test result – or condition present). Round your answer to the nearest hundredth.
Diagnostic tests of medical conditions can have several types of results. The test result can be positive or negative, whether or not a patient has the condition. A positive test (+) indicates that the patient has the condition. A negative test (−) indicates that the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 200 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for a condition are shown. Condition Present Condition Absent Row Total Test Result + 108 22 130 Test Result − 21 49 70 Column Total 129 71 200 Assume the sample is representative of the entire population. For a person selected at random, compute the following probabilities. (Enter your answers as fractions.) (a) P(+ | condition present); this is known as the sensitivity of a test. Your answer must be a fraction,…
The first test a doctor would order to determine whether a person is infected with HIV (the virus that causes AIDS) is the ELISA test. It detects antibodies and antigens for HIV. A study in Statistical Science by J. Gastwirth estimated that, if the person is actually infected with HIV, this test produces a positive result 97.7% of the time. If a person is not infected with HIV, the test result is negative 92.6% of the time. According the the US Centers for Disease Control (CDC), an estimated 1.1 million Americans out of a population of 321 million were infected with HIV in 2015. Using the information above, determine the probability that a randomly selected person whose ELISA test is positive actually is infected with HIV? a. What is the probability that a randomly selected American is infected with HIV? b. Using the answer to part (a) and the conditional probabilities of positive and negative ELISA test results, fill out the contingency table below: ELISA Test Result…
Write the null hypothesis, Ho and the alternative hypothesis, Ha for the following questions. TESTING TO SEE IF THERE IS EVIDENCE THAT THE CORRELATION BETWEEN TWO VARIABLES IS NEGATIVE. TESTING TO SEE IF THERE IS EVIDENCE THAT A CORRELATION BETWEEN HEIGHT AND SALARY IS SIGNIFICANT (THAT IS , DIFFERENCE THAN ZERO)…
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