1. In your own words, discuss the following in not more than 5 sentences each:a. Null Hypothesis, Ho:b. Alternative Hypothesis, Ha:

Given that a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha:

Answered: 1. In your own words, discuss 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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Complete all six steps of hypothesis tesitng. A college president wanted to know how 10-year-after-graduation salaries for academic majors (English, psychology, math, etc.) compared to salaries for career-oriented majors (business, engineering, computer science, etc.). She matched 84 academic majors at her college with 84 career-oriented majors on the basis of SAT scores and GPA. She found MAcademic = $59,250, MCareer =$61,000, sD = 9,500. Analyze and interpret.
(adapted from Johnson, 1980) Each semester, there are seven sections of a particular biology course, taught at various times by various instructors. The table below shows the number of students who selected each of the seven sections in Fall 2016. Do the data suggest that students have a preference for certain sections of the course? Perform a test of hypothesis using a = 0.05. In answering, be sure to address each of the five steps in a test of hypothesis. Number of students 1 18 2 12 3 25 Section 4 23 5 8 6 19 7 14
150 students were polled. 75 of them are learning Hindi. 60 of them are learning Italian. 40 of them are learning neither Hindi nor Italian. How many of them are learning both Hindi and Italian? 4
A coach of a cross country team asked all 200 of the runners who ran at a meet two questions: Did you get less than 8 hours of sleep last night? Yes No Did you achieve a personal record in this meet? Yes No The coach saw an association between the amount of sleep and achieving a personal record for the runners. Which statement provides evidence for this association?
12. An eye doctor keeps track of whether people who come in for testing need glasses. When she separates them by eye color, she gets the following: Glasses No Glasses Brown 43 55 Blue 34 19 Can we say that eye color is independent of the need for glasses? (a = .01)
durty2
9. There are about 8 million people in the City of New York. A survey organization took a simple random sample of 2,500 persons and found that the average household income in the sample was $59,210 and the SD was $26,120. The organization estimates the average income in the entire city to be around $59,210, they put s give-or-take number of $522.40 on this estimate. Say whether each of the following statements is true or false, and explain. (a) An approximate 99.7%-confidence interval for the average household income in the city runs from $57.642.80 to $60,777.20 (b) If a statistician takes a simple random sample of 2,500 persons out of the 8 million people in the city, and goes 3 SEs either way from the average household income of the the 2,500 people in the sample, there is about a 99.7% chance that his interval will cover the average household income in the city. (c) About 99.7% of the people in the sample had incomes in the range $59, 210+ $78,360. (d) It is estimated that 99.7% of…
3. Rachel has a large number of songs on her music player. The song lengths, in minutes, are summarized in the boxplot below. Rachel decided to listen to ten songs each morning. She set the music player to select the songs at random. The boxplots below summarize song lengths for Monday, Tuesday, and Wednesday of that week. Samples of 10 songs Rachel's Songs Length (minutes) Lergih ininu Of the following 4 statements - 2 of them are true. Identify which are true. Then write 2 sentences explaining your choices. Something must be wrong with the music player, because the boxplots for Monday, Tuesday, and Wednesday all look very True or True or The song lengths varied less on Wednesday than the song lengths on Monday or Tuesday. False False different.- True or At least 55% of the songs will have a True or The song lengths for Monday will have a False song length greater than minutes. False mean less than median.
8. Explain which rules of inference are used for each step. "Somebody in this class enjoys whale watching. Every person who enjoys whale watching cares about ocean pollution. Therefore, there is a person in this class who cares about ocean pollution."
15) Use the situation below to answer the question that follows. Team Jet has 7 members who won a school competition. Of these 7, 4 members are randomly picked to receive prizes for winning. The 1st member selected wins a $50 gift card; the 2nd person selected wins a $25 gift card; the 3rd person selected wins a $10 gift card; the 4th person selected wins a $5 gift card. The names of Team Jet's members are represented by the first letter of their first names, as displayed in the following table: Name Frank Gina Harriet Inez Jakob Keven Liu Letter F G H I J K L In the box below, complete the remaining three rows of the list that models how to calculate the number of possible ways 4 team members can be selected to win the prizes. 1) FGHIJKL Let Lui win the 1st prize, so select L. 2) 3) 4)
The u for days absent from class per month is 4.3. The teacher begins a policy of pop quizzes to see if it affects attendance. What are Ha and Ho?

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1. In your own words, discuss the following in not more than 5 sentences each: a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: