Non-Computer Problems1. College financial aid offices expect students to use summerearnings to help pay for college. But how large are theseearnings? One college studied this question by asking asample of students how much they earned. Omitting studentswho were not employed, 1296 responses were received.(dollar figures are expressed in thousands)Group nMales 675 $18.85 $13.68Females 621 $13.60 $10.37Were the mean summer earnings significantly higher for malesthan they were for females? Use a 5% significance level. Showyour work for all 4 steps in hypothesis testing. Be sure toinclude diagrams and to determine and interpret the p-value foryour test-statistic. State in words what the conclusion you reachfrom the hypothesis test suggests about the answer to theitalicized question.2. FIU is interested in the effectiveness of teacher training classes onthe quality of instruction in discussion sections. Theadministrators have decided to use a study with a matched,experimental design to explore this problem. Thirty professorstook an intensive teacher-training class before the Fall '14semester began and they were paired with professors teaching thesame courses who did not take the intensive training class.Course evaluations were compared at the end of the semester,and the mean advantage for those who took the course comparedto their matched counterparts was 1 point on ratings of thequestion "The instructor is an excellent teacher." The standarddeviation of this difference was 2.5. Do teacher training classesimprove teaching evaluations? Use a 1% significance level. Showyour work for all 4 steps in hypothesis testing. Be sure to includediagrams and to determine and interpret the p-value for your test-statistic. State in words what the conclusion you reach from thehypothesis test suggests about the answer to the italicizedquestion.

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Non-Computer Problems 1. College financial aid offices expect students to use summer earnings to help pay for college. But how large are these earnings? One college studied this question by asking a sample of students how much they earned. Omitting students who were not employed, 1296 responses were received. (dollar figures are expressed in thousands) Group nX Males 675 $18.85 $13.68 Females 621 $13.60 $10.37 Were the mean summer earnings significantly higher for males than they were for females? Use a 5% significance level. Show your work for all 4 steps in hypothesis testing. Be sure to include diagrams and to determine and interpret the p-value for your test-statistic. State in words what the conclusion you reach from the hypothesis test suggests about the answer to the italicized question.

Non-Computer Problems 1. College financial aid offices expect students to use summer earnings to help pay for college. But how large are these earnings? One college studied this question by asking a sample of students how much they earned. Omitting students who were not employed, 1296 responses were received. (dollar figures are expressed in thousands) Group nX Males 675 $18.85 $13.68 Females 621 $13.60 $10.37 Were the mean summer earnings significantly higher for males than they were for females? Use a 5% significance level. Show your work for all 4 steps in hypothesis testing. Be sure to include diagrams and to determine and interpret the p-value for your test-statistic. State in words what the conclusion you reach from the hypothesis test suggests about the answer to the italicized question.

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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Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.

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Non-Computer Problems
1. College financial aid offices expect students to use summer
earnings to help pay for college. But how large are these
earnings? One college studied this question by asking a
sample of students how much they earned. Omitting students
who were not employed, 1296 responses were received.
(dollar figures are expressed in thousands)
Group n
Males 675 $18.85 $13.68
Females 621 $13.60 $10.37
Were the mean summer earnings significantly higher for males
than they were for females? Use a 5% significance level. Show
your work for all 4 steps in hypothesis testing. Be sure to
include diagrams and to determine and interpret the p-value for
your test-statistic. State in words what the conclusion you reach
from the hypothesis test suggests about the answer to the
italicized question.
2. FIU is interested in the effectiveness of teacher training classes on
the quality of instruction in discussion sections. The
administrators have decided to use a study with a matched,
experimental design to explore this problem. Thirty professors
took an intensive teacher-training class before the Fall '14
semester began and they were paired with professors teaching the
same courses who did not take the intensive training class.
Course evaluations were compared at the end of the semester,
and the mean advantage for those who took the course compared
to their matched counterparts was 1 point on ratings of the
question "The instructor is an excellent teacher." The standard
deviation of this difference was 2.5. Do teacher training classes
improve teaching evaluations? Use a 1% significance level. Show
your work for all 4 steps in hypothesis testing. Be sure to include
diagrams and to determine and interpret the p-value for your test-
statistic. State in words what the conclusion you reach from the
hypothesis test suggests about the answer to the italicized
question.

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