webwork / f21gmostafam2345s013 / hw9 / 7HW9: Problem 7Previous ProblemProblem ListNext Problem(1 point) Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ability to hitthe ball so far. Designers, therefore, have proposed that new golf courses need to be built expecting that the average golfer can hit the ball more than255 yards on average. Suppose a random sample of 103 golfers be chosen so that their mean driving distance is 257.6 yards, with a standard deviationof 45.7.Conduct a hypothesis test where Ho : µ = 255 and H1 : µ > 255 by computing the following:(a) test statistic(b) p-value p =(c) If this was a two-tailed test, then the p-value isNote: You can earn partial credit on this problem.Preview My AnswersSubmit AnswersYou have attempted this problem 0 times.You have unlimited attempts remaining.Email instructorPage generated at 11/08/2021 at 03:38pm CSTShow AMacBook Air

Given,sample size(n)=103sample mean(x¯)=257.6standard deviation(s)=45.7H0:μ=255H1:μ>255

Answered: HW9: Problem 7 Previous Problem Problem…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Problem 1P

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1. For each row of the table you are given a p-value and a level of significance (a). Determine which hypothesis is supported, if the data are significant and which type error could be made. If a given p- value is not a valid p-value (because it is greater than 1), put an x in each box in therow. p-value Hypothesis Họ or H1 Significant or Not Significant Error Type I or Type II 0.043 0.05 0.32 0.05 0.043 0.01 0.0035 0.01 0.043 0.10 0.15 0.10 5.6 x 106 0.05 7.3256 0.01 2. For the hypothesis test, write the concluding sentence in the form used by researchers. Context: Support paying off student dept, H1: p 8 ft, p-value-5.6 x 10°, a=0.05, n=56. 4. For the hypothesis test, write the concluding sentence in the form used by researchers. Context: Blood pressure for men and women, H1: Hw # HM ft, p-value3D0.0035, a=0.01, n=2403.
Please answer the given problem in statistics as soon as possible. Thank you!
1. State the Problem2. Formulate the Hypothesis 3. What is the value of the Sum of the Squared Scores?
1. Historically, the MBA program at Whatsamattu U. has about 40% of their students choose a Leadership major, 30% choose a Finance major, 20% choose a Marketing major, and 10% choose no major. Does the most recent class of 200 MBA students fit that same pattern or has there been a shift in the choice of majors. Using the sample of 200 students (in the data file), conduct a Chi Square Goodness of Fit test to determine if the current distribution fits the historical pattern. Use a .05 significance level. 2. While job opportunities for men and women are considerably more balanced than they were 40 years ago, the career aspirations may still differ. Is there a difference in majors chosen by men and women? Using the sample of 200 MBA students (in the data file), conduct a Chi Square Test of Independence to determine if one's choice of major is independent of their gender. Use a .05 significance level.
10. You roll a fair die repeatedly. If it shows 1, you must stop, but you may choose to stop at any prior roll. Your score is the square of the number shown by the die on the final roll. Suppose you decide to stop if it shows a number greater than or equal to i. Determine the i that results in the maximum expected score.
gen.wileyplus.com/edugen/student/mainfr.uni Mann, Introductory Statistics, 9e ce Assignment Gradebook ORION Downloadable eTextbook ent Chapter 11, Section 11.3, Problem 021 Consider the following contingency table that is based on a sample survey. Column 1 Column 2 Column 3 Row 1 138 89 79 Row 2 93 50 89 Row 3 122 78 113 a. Write the null and alternative hypotheses for a test of independence for this table. Ho: Rows and columns are H: Row and columns are b. Calculate the expected frequencies for all cells assuming that the null hypothesis is Round your answers to three decimal places, where required. Column 1 Column 2 Column 3 Row 1
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Problem 5.2.: The daily wage of a particular industry is normally distributed with a mean of 150 pesos. In a random sample of 144 workers of a very large company in this industry, the mean daily wage was found to be 148 pesos with a standard deviation of 10 pesos. Can this company be accused of paying inferior wages (less than the usual) at α=5%? Please Refer to Problem 5.2.: Question: The decision rule to be used at α=5% is: “Reject Ho of tc > ttab = 66, otherwise fail to reject Ho.”
4. In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsible for long-term memory storage, in adolescents. The researchers randomly selected 21 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm°. An analysis of the sample data revealed that the hippocampal volume is approximately normal with no outliers and x = 8.14 cm ands = 0.8 cm³. Conduct the appropriate test at the a = 0.01 level of significance. State the null and alternative hypotheses. Ho: H (1) H1: µ (2) (Type integers or decimals. Do not round.) Identify the t-statistic. to = (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.) Make a conclusion regarding the hypothesis. (3) the null hypothesis. There (4) sufficient evidence to claim that the mean hippocampal volume is (5) cm³. 3
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SHOW WORK TO GET FULL CREDIT Problem 3) This problem has two independent parts a) and b) a) (6 points) A gasoline tank for a certain vehicle is designed to hold 16 gallons of gas. Suppose that the actual capacity of a randomly selected tank has a distribution that is approximately Normal with a mean of 16.0 gallons and a variance of 0.0256 gallons?. The manufacturer of this gasoline tank considers the largest 2% of these tanks too large to put on the market. How large does a tank have to be to be considered too large? (Round your answer to 2 decimal places) (Show work). b) (4 points) The number of telephone calls that arrive at a phone exchange is a random variable that follows a Poisson distribution. The expected number of calls per hour at the exchange is 4. What is the mean time between consecutive telephone calls? (Show work)

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