Example 5: A corporation psychologist believes that exercise affects self image. To investigate thispossibility, 14 employees of the corporation are randomly selected to participate in a jogging programme.Before beginning the programme, they are given a questionnaire that measure self-image. Then they begin thejogging programme. The programme consists of jogging at a moderately taxing rate for 20 minutes a day, 4days a week. Each employee's self-image is measured again after 2 months on the programme. The results areshown below (the higher the score, the higher the self-image); a score of 20 is the highest score possible.Subject134569.1011121314Before Jogging14138.141271016101415129.After Jogging2016151215131213161814171815(a) What is the alternative hypothesis? Use a non-directional hypothesis.(b) What is the null hypothesis?(c) Using a =(d) What error may you be making by your conclusion in part (c)?(e) To what population does your conclusion apply?0.05212 tail what do you conclude?

Answered: Image /qna-images/answer/e0113e0f-0392-4a8e-bd93-1260976e6d18.jpg

Answered: Example 5: A corporation psychologist…

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 cognitive psychologist conducted a study of whether familiarity of words (X) predicts the time it takes (in seconds) to press a button indicating whether the word is singular or plural (Y), with all participants being given the same words. Familiarity with these words was rated at a later time on a 7-point scale (with higher numbers indicating more familiarity). The participants' scores were: X : 6, 2, 5 ,3 ,7 Y : 0.3 , 1.5 , 0.8 , 1.4 ,0.1 a.Figure the correlation coefficient Describe the correlation Figure the linear prediction rule; list the b value, a value and the final formula Predict the time it takes to press a button if the familiarity with the word is 1
how do I do this problem? Please answer all part of the question and show all work and steps so I am able to easily understand it.
A social worker reports that 30% of the recipients of the emergency subsidy already received the “ayuda”. Of the 120 recipients surveyed, 38 confirmed the statement. Is there enough evidence to refute the social worker’s statement? Use ? = 0.1.
Touch Therapy When she was 9 years of age, Emily Rosa did a science fair experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily’s hand without seeing it and without touching it. Among 280 trials, the touch therapists were correct 123 times (based on data in “A Close Look at Therapeutic Touch,” Journal of the American Medical Association, Vol. 279, No. 13). a. Given that Emily used a coin toss to select either her right hand or her left hand, what pro- portion of correct responses would be expected if the touch therapists made random guesses? b. Using Emily’s sample results, what is the best point estimate of the therapists success rate? c. Using Emily’s sample results, construct a 99% confidence interval estimate of the proportion of correct responses made by touch…
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Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations. Patients experiencing symptoms of a heart attack are routinely transported to a hospital in an ambulance. In a study of a new treatment thought to reduce damage to the heart, patients experiencing symptoms of a heart attack were randomly assigned to one of two groups. During transportation to the hospital, patients in one group received standard care, and patients in the other group received the new treatment consisting of standard care and the application of a blood pressure cuff. The response variable measured for each patient was a number between 0 and 1, referred to as the myocardial salvage index (MSI). A higher MSI value indicates a more positive outcome for the patient. Summary statistics for the MSI responses of the two groups are shown in the table below. Do the data provide…

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