Determine if the two versions of her AP Statistics final exam were equally difficult In a previous alternate exercise, Mrs. Gallas hoped to determine if the two versions of herAP® Statistics final exam were equally difficult. Last year, she set up a randomizedcomparative experiment, and the data showed no statistically significant difference in thescores between the two versions. This year, she selected a random sample of 20 studentsfrom the large district and used a matched pairs design, where each student was given bothversions of the test. For each student, the test order was randomized. Here are the scores,along with the differences in scores for each student:Student2 36.78 9 10 11 12 13 14 15 16 17 18 19 20Verslon A90 85 77 9683 93 81 84 71 65 98 93 83 85 91 82 79 74 72Version B86 84 80 91 83 80 87 83 80 70 60 99 96 75 78 88 81 74 65 66Difference (A – B) Ź 4 1 -3 5 536 -25 -1 -3 8 7 3 1 5 9 64.

In testing of hypothesis, there are two hypotheses. These are null and alternative hypothesis. A…

Answered: In a previous alternate exercise, Mrs.…

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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The study of statistics can be intimidating, but it can also be rewarding. Describe at least two benefits to your life as a student by engaging in the study of statistics
B. A statistics professor administered an exam to three different classes. The 8:00 class had 20 students and an average score of 82.4. The 9:00 class had 24 students and an average of 78.9. The 29 students in the 10:00 class had an average of 87.3. Calculate the òverall average for all three classes combined.
A school superintendent wanted to know whether there were differences between the high schools in her district with regards to the proportion of students who do not live with their biological parents. She surveyed 200 students from each of the two high schools – East and West. The proportion of students from the survey at East who do not live with their biological parents is 3.4%. The proportion of students from the survey at East who do not live with their biological parents is 4.2%. Using a 95% confidence interval (2SD or Theory based), can the superintendent conclude that there is a difference between East and West with respect to the proportion of students who do not live with their biological parents. Group of answer choices Yes she can conclude there is a difference because the confidence intervals overlap. No she cannot conclude there is a difference because the confidence intervals overlap. Yes she can conclude there is a difference because the confidence intervals don’t…
You land a job at an online marketing/consulting firm after attaining a business degree with an emphasis in statistics. You walk into your office on the first day and there is an assignment sitting upon your desk. The firm was recently hired by ImpulseBuy Now.com (a famous online clearing house for as-seen-on-TV junk items). ImpulseBuyNow wanted to know if the amount of time spent browsing by a customer at their online site associates to how many items the customer purchased. Sound familiar? Realizing that you listed a statistical emphasis in your business degree, you panic and pull out your old statistics notes as to find this unit in the study guide. What luck! You must figure out what to tell ImpulseBuy Now about their question. Here is the data provided by ImpulseBuy Now: Browse Time (min.) 0-10 11-20 More than 20 Browse Time (min.) 0-10 Items Purchased Zero 1000 And your final p-value is extremely small. 1500 500 One 900 Expected Values Zero 600 2600 2500 Your paycheck depends…
Here are the top 10 season hitting percentages for members of two baseõall teams, and you must determine which is the best-hitting team, defined as the average. You have to decide which type of average you use and why. Do this by hand or use SPSS.
urgent please
Samantha took an exam in her statistics class and received 90 out of 100. Samantha thought that was a good score, but she wanted to know how high her score was in relation to the rest of the class. Her professor said her Z-score was -0.29. How should Samantha interpret her Z-score? a. Samantha’s score is 0.29 points above the class mean.b. Samantha’s score is 29% above than the class mean.c. Samantha’s score is 0.29 standard deviations above the class mean.d. Samantha’s score is 0.29 standard deviations below the class mean.
You believed that sending positive thoughts to your classmates that have been so much bothered with virtual classes will change their performance. You got their prelim grades before you send them bunch of thoughtful messages then got their midterm grades. Did your positive messages somehow made difference in their performance?
If you have the following observations: k, 5, 10, 15,25, then what is the possible value of the median?
Please all solve the question
In a data set with 25 scores, if the value 16 occurs 12 times, what is its relative frequency?
One common system of computing the grade point average (GPA) assigns 4 points to an A, 3 points to a B, 2 points to a C, 1 point to a D, and 0 points to an F. What is the GPA of a student who gets an A in a 3-credit course, a B in each of two 4-credit courses, a C in a 3-credit course, and a D in a 4-credit course? (Round to two decimal places) Group of answer choices 2.75 2.25 2.56 2.60

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