I'm not sure how they got these answers. Consider the probability distribution shown here. Complete parts a through c.- 3- 10.070.14Xp(x)- 40.01- 20.11a. Calculate μ, o², and o.H₂μ= .04 (Round to two decimal places as needed.)o² = 2.8584 (Round to four decimal places as needed.)o 1.691 (Round to three decimal places as needed.)00.3110.1820.0930.0740.02U

x P9x) -4 0.01 -3 0.07 -2 0.11 -1 0.14 0 0.31 1 0.18 2 0.09 3 0.07 4 0.02

Answered: Consider the probability distribution…

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 marketing firm wishes to test the effectiveness of the audio/visual presentation of certain information as opposed to the purely audio presentation of the information. To this end 100 volunteers were given a 10 minute presentation in which the information was presented in an audio/visual format. A second group of 100 volunteers was presented the same information in a purely audio format. Each person in each of the two groups was asked the same 20 questions related to the information in the presentation. The audio/visual group had an average of 10.5 correct responses with a sample standard deviation of 4. The purely audio group had an average of 9.4 correct responses with a standard deviation of 3. The marketing firm believes this means that the audio/visual format leads to better retention of the information. We test the hypotheses H0: 1 -2=0 versus Ha: 1 -2>0 at a 2% level of significance. Here denotes 1 the population average number of correct responses for…
2) Sheila scored 75, 80, 100, 60, and 85 on her last five history tests. She has a final exam that will count as two exams. What score must Shiela obtain on this final exam in order to earn the grade of B? the grading scale for B is 80-89.
I already have a,b,c and d. I just need help on E, F, G, and H
Part 4: Suppose that 53 of the 55 Computer Science students of San Sebastian College, Manila are taking at least one of the mathematics subjects Algebra, Trigonometry and Calculus. See the figure below for more details: 24 taking Algebra, 26 taking Trigonometry, 20 taking Calculus, 5 taking Algebra and Trigonometry, 7 taking Algebra and Calculus, 8 taking Trigonometry and Calculus. a. Find the number of students who are taking all three mäthematics subjects. b. Fill in the correct number of students in each of the eight regions of the Venn diagram. c. Determine the number of students who are not taking any of the three mathematics subjects? d. How many students are taking Algebra as their only mathematics subject? e. How many students were taking Calculus and Trigonometry but not Algebra?
I don't believe this answer is correct. Wouldn't it be "not enough information given to determine"? $12 is not the answer to this question.
Roads A, B, and C are the only way to escape from a certain provincial prison. Prison records show that, of the prisoners who tried to escape, 17% used road A, 13 % used road B, the remainder used road C. The records also indicate that 72 % of those who tried to escape using road A were captured. 62 % of those using road B were captured, and 21% of those using road C were captured. Use four decimals in your answers. (a) What is the probability that a prisoner escaping from this provincial prison is not captured? 0.65 (b) What is the probability that a captured prisoner used road A in their escape attempt? (c) What is the probability that a prisoner who didn't get captured has used road C?
The teacher from Problem 21 also tried a different approach to determining whether changing answers helps or hurts exam grades. In another class, students were told to review their final exams and change any answers they wanted to before turning them in. However, the students had to indicate both the original answer and the changed answer for each question. The teacher graded each exam twice, once using the set of original answers and once with the changes. In the class of n- 22 students, the exam scores improved by an average of MD - 2.5 points with the changed answers. The standard deviation for the difference scores was s = 3.1. Are the data sufficient to conclude that rethinking and changing answers can significantly improve scores? Use a one-tailed test at the .01 level of significance. (1) Ho: [ Select ] [ Select ] [ Select ] H1: Select ) [ Select ] [ Select ] (2) a - [ Select ] df - [ Select J Critical region boundary/boundaries: [ Select ] [ Select ] (3) Estimated Standard…
Is there any way I can get this written by hand? It's hard to read, but I'm attempting to grasp it.
Unfortunately, for some reason, at least one of the answers isn't correct. I got the same answeres myself. Is there a reason any could be wrong?

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