In an effort to improve the mathematical skills of 16 students, a teacher provides a weekly 1-hour tutoringsession. A pre-test is given before the sessions and a post-test is given after. The results are shown here.Test the claim that there was an increase in the scores. at a=0.05. You believe that the population isnormally distributed, but you do not know the standard deviation. When calculating difference use Post-test minus Pre-test.pre-testpost-test645494103586276736055787843417773998969694036889183827685981065852 Which of the following are the correct hypotheses?O Ho: µd 2 0HA: Hd < 0(claim)О Но: ра < 0HA: Ha > 0(claim)O Ho: µd =HA: Hd + 0(claim)Given that a is 0.05 the critical value is 1.753The test statistic is:(round to 3 places)The p-value is:(round to 3 places)The decision can be made to:O reject HoO do not reject HoThe final conclusion is that:

We want to test the hypothesis by paired t test.

Answered: In an effort to improve the…

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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Psychology students in the Izmir University of Economics completed the Dental Anxiety Scale questionnaire in 2020. In this study, scores on the scale range from 0 (no anxiety) to 20 (extreme anxiety). The mean score was 14 and the standard deviation was 3.5. Assume that the distribution of all scores on the Dental Aroxiety Scale is normal with u= 14 and g=35. Complete parts a through c A Click here to view a table of areas under the standardized normal curve O Table of Normal Curve Areas a. Suppose you score a 18 on the Dental Anxiety Scale. Find the z-value for this score. z= (Round to the nearest hundredth as needed ) b. Find the probability that someone scores between 13 and 18 on the Dental Anxiety Scale P(13sxs 18) =D (Round to four decimal places as needed) c. Find the probability that someone scores above 17 on the Dental Anxiety Scale P(x> 17)=(Round to four decimal places as needed.) Enter your answer in each of the answer boxes. |8 目國 100 |8 案 |8 業可 0 | 会效到商同我目 |
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. The indicated IQ score, x, is (Round to one decimal place as needed.) 0.6 a G
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... x 0.9 A graph with a bell-shaped curve, divided into 2 regions by a line from top to bottom, on the left side. The region right of the line is shaded and labeled 0.9. The x-axis below the line is labeled "x". Question content area bottom Part 1 The indicated IQ score, x, is enter your response here. (Round to one decimal place as needed.)
Page of 26 ZO THE SCORES ON A SCIENCE TEST HAD AN AVERAGE OF 78 AND A STANDARD DEVIATION OF 3. WHAT PERCENT OF STUDENTS SCORED BELOW A 68?
UPVOTE WILL BE GIVEN! WRITE THE SOLUTIONS LEGIBLY. YOU MAY USE EXCEL. The average score of one of your Math exams was 75 with a standard deviation of 20. Assuming the scores are normally stributed if your corresponding z-score was 1.5. What precentage of the students got a score less than 50? a. 6.68% b. 89.44% c. 10.56% d. 22.66%
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table Click to view page 2 of the table. The indicated IQ score, x, is (Round to one decimal place as needed.) X 0.8 N
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. The indicated IQ score, x, is (Round to one decimal place as needed.) X 0.75 0
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