Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course. At a 1% level of significance determine whether the scores after the stats course are significantly higher tha scores before. Take the differences - before - after. Before After 430 465 485 475 520 535 360 410 440 425 500 505 425 450 470 480 515 520 430 430 450 460 495 500 540 530 What type of alternative hypothesis is appropriate for this research question? O two-sided • one-sided Locate student9 in the dataset. What rank will be given to this student? 3 What is the value of the test statistic, T? Give answer to 1 decimal place. -1.9 1x What is the critical value for the study? (Hint: student 10 vill be dropped from the analysis, since the scores are the same before and after the stats class). 2.7 Are the exam scores significantly higher after the stats course? O Yes • No

Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course. At a 1% level of significance determine whether the scores after the stats course are significantly higher tha scores before. Take the differences - before - after. Before After 430 465 485 475 520 535 360 410 440 425 500 505 425 450 470 480 515 520 430 430 450 460 495 500 540 530 What type of alternative hypothesis is appropriate for this research question? O two-sided • one-sided Locate student9 in the dataset. What rank will be given to this student? 3 What is the value of the test statistic, T? Give answer to 1 decimal place. -1.9 1x What is the critical value for the study? (Hint: student 10 vill be dropped from the analysis, since the scores are the same before and after the stats class). 2.7 Are the exam scores significantly higher after the stats course? O Yes • No

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Description: Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course. At a 1% level of significance determine whether the scores after the stats course are significantly higher tha
scores before. Take the differences - before - after.
Before After
430
465
485
475
520
535
360
410
440
425
500
505
425
450
470
480
515
520
430
430
450
460
495
500
540
530
What type of alternative hypothesis is appropriate for this research question?
O two-sided
• one-sided
Locate student9 in the dataset. What rank will be given to this student? 3
What is the value of the test statistic, T? Give answer to 1 decimal place. -1.9
1x
What is the critical value for the study? (Hint: student 10 vill be dropped from the analysis, since the scores are the same before and after the stats class). 2.7
Are the exam scores significantly higher after the stats course?
O Yes
• No

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