A magazine presented a lesson in hypothesis testing carried out by medicalstudents in a biostatistics class. Students were blind-folded and then givena red-colored or yellow-colored gummy bear to chew. (Half the students wererandomly assigned to receive the red gummy bear and half to receive the yellowbear. The students could not see what color gummy bear they were given.)After chewing, the students were asked to guess the color of the candy based onthe flavor. Of the 137 students who participated in the study, 94 correctlyidentified the color of the gummy bear. Complete parts a through c below.(Round to three decimal places as needed.)Make a conclusion. Choose the correct answer below.A. Reject the null hypothesis. There is sufficient evidence to conclude thatcolor and flavor are relatedB. Do not reject the null hypothesis. There is sufficient evidence toconclude that color and flavor are relatedC. Do not reject the null hypothesis. There is not sufficient evidence toconclude that color and flavor are relatedD. Reject the null hypothesis. There is not sufficient evidence to concludethat color and flavor are related A magazine presented a lesson in hypothesis testing carried out by medicalstudents in a biostatistics class. Students were blind-folded and then givena red-colored or yellow-colored gummy bear to chew. (Half the students wererandomly assigned to receive the red gummy bear and half to receive the yellowbear. The students could not see what color gummy bear they were given.)After chewing, the students were asked to guess the color of the candy based onthe flavor. Of the 137 students who participated in the study, 94 correctlyidentified the color of the gummy bear. Complete parts a through c below.a. If there is no relationship between color and gummy bear flavor, whatproportion of the population of students will correctly identify the color?(Type an integer or a decimal. Do not round.)b. Specify the null and alternative hypotheses for testing whether color and flavorare related. Let p be the true proportion of students who are able to correctlyidentify the color of the gummy bear.Ho: PH₂: P(Type integers or decimals. Do not round.)c. Carry out the test and give the appropriate conclusion at x = 0.05. Usethe p-value of the test to make your decision.

( a )If there is no relationship between color and gummy bear flavor, then the proportion of…

Answered: A magazine presented a lesson in…

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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Example 2: Bryan coaches track and field at a local high school and during the previous season he got the impression that his 800m runners performed better when their races were in the morning as opposed to the afternoon. This season, he wanted to determine if his runners in fact performed better in the morning so he recorded all of their times for each race throughout the entire season. The data that he recorded for the morning and afternoon races are shown below. Carry out an appropriate hypothesis test at the a = 0.05 level to determine if his 800m runners performed better in the morning than in the afternoon. Sample Size Standard Deviation Average Morning 38 14 122 Afternoon 54 13 124
Economists theorize that the recent recession has affected men more than women because men are typically employed in industries that have been hit hardest by the recession. Women, on the other hand, are typically employed in services which are considered more recession resistant. A sample of 160 men and a sample of 145 women were drawn. In those samples, 20 men were unemployed, and 13 of the women were unemployed. Complete parts a and b below. ...D- a. Perform a hypothesis test using a = 0.05 to determine if the unemployment rate for men is higher than the rate for women. Let population 1 be men and population 2 be women. What are the correct null and alternative hypotheses? O A. Ho: P1 - P2s0 H1: P1 - P2 >0 O B. Ho: P1 - P2 <0 H1: P1 - P2 20 O C. Ho: P1 - P2 = 0 D. Ho: P1 - P2 # 0 H4: P1 - P2 = 0 H1: P1 -P2 #0 What is the test statistic? z, = (Round to two decimal places as needed.) What is/are the critical value(s)? The critical value(s) is/are (Round to three decimal places as…
An anger-management courseclaims that, after completing its seminar, participants will lose their tempers less often. Always a skeptic, you decide to test this claim. A random sample of 12 seminar participants is chosen, and these participants are asked to record the number of times that they lost their tempers in the two weeks prior to the course. After the course is over, the same participants are asked to record the number of times that they lost their tempers in the next two weeks. The following table lists the results of the survey. Using these data, test the claim at the 0.01 level of significance assuming that the population distribution of the paired differences is approximately normal. Let d= (participants after completing the anger-management course) −(participants before completing the anger-management course). Number of Times Temper Was Lost during a Two-Week Period Before 10 6 5 8 7 7 10 6 3 10 3 8 After 6 7 4 5 4 7 8 6 4 9 3 7 Step 2 of 3 : Compute the…
A student majoring in Business who has passed the Business Math course suspects that the average price of lunch at the canteen has increased during the pandemic. Before the pandemic, the price for lunch he paid was $21, $22, $22.50, $23, $23.50. After the pandemic, he paid $25, $25.50, $30, $27, and $26.50. a) Perform a hypothesis test analysis to find out whether there has been an average increase in the price of lunch (Use six Hypothesis Testing Steps without p value) ! b) Interpret (and explain) the results of point a above!
Answer the following problems. Apply the different steps in hypothesis testing. 1. A sales manager wanted to know whether there was significant difference in the monthly sales of four representatives. Veniz is strictly on salary and small allowance, Alyson is strictly on commission, Alyxa is on commission and small salary, and Elijah is on small commission and a salary. Five months were chosen at random. The data represents monthly sales in units of product. Veniz Alyson Alyxa Elijah 20 28 23 31 24 22 30 25 26 24 29 26 30 25 20 27 22 26 25 21 Using 0.01 level of significance, test the hypothesis that there is no difference in the mean monthly sales of the representatives.
To earn full credit for this question, use your own sheet of paper to solve the problem, showing all steps of your work. A ping pong ball is drawn at random from an urn consisting of balls numbered 4 through 9. A player wins $1 if the number on the ball is odd and loses $0.5 if the number is even.Let x be the amount of money a player will win/lose when playing this game, where x is negative when the player loses money.(a) Construct the probability distribution table for this game. Round your answers to two decimal places. Outcome x Probability P(x) (b) What is the expected value of player's winnings? Round to the nearest hundreth.(c) Interpret the meaning of the expected value in the context of this problem.
Forty-nine percent of all New York residents prefer life in prison without parole over the death penalty for a person convicted of first degree murder. Among New York residents who are Latino, 57% prefer life in prison without parole over the death penalty for a person convicted of first degree murder. Twenty-five percent of all New York residents are Latino. One New York resident is selected at random. For this problem, let: L = the selected New York resident is Latino. N = the selected New York resident prefers life in prison without parole over the death penalty for a person convicted of first degree murder. P(N) = %3D P(L) = P(N | L) = P(L AND N) = Are L and N mutually exclusive events? O There is not enough information to determine whether or not events N and L are mutually exclusive. O Events N and L are mutually exclusive. O Events N and L are not mutually exclusive. P(L OR N) =
Forty-nine percent of all New York residents prefer life in prison without parole over the death penalty for a person convicted of first degree murder. Among New York residents who are Latino, 57% prefer life in prison without parole over the death penalty for a person convicted of first degree murder. Twenty-five percent of all New York residents are Latino. One New York resident is selected at random. For this problem, let: L = the selected New York resident is Latino. N = the selected New York resident prefers life in prison without parole over the death penalty for a person convicted of first degree murder. P(N) = 49 P(L) = .25 P(N | L) = .57 P(L AND N) = Are L and N mutually exclusive events? O There is not enough information to determine whether or not events N andL are mutually exclusive. O Events N and L are mutually exclusive. O Events N and L are not mutually exclusive. P(L OR N) =
2.) A packaging company advertises that their product weighs on average 16 oz. You feel the box is much lighter than this, so you run a hypothesis test. a.) State the hypotheses. b.) What would be a type l error in this situation? c.) How could you decrease your chance of making a type I error? d.) What would be a type II error in this situation?
at a local school, 90% of the students took the test A and 15% of the students took both test A and Test B. Based on the information provided, which of the following calcuations are not possible and why? What can you say based on the data? A) P(B/A) B) P(A/B) C) P(A union B)
Question 4: give the conclusion.
A college professor wants to determine the best way to present an important topic to his class. He has the following three choices: (1) he can lecture, (2) he can lecture and assign supplementary reading, or (3) he can show a film and assign supplementary reading. He decides to do an experiment to evaluate the three options. He solicits 27 volunteers from his class and randomly assigns 9 to each of three conditions. In condition 1, he lectures to the students. In condition 2, he lectures and assigns supplementary reading. In condition 3, the students see a film on the topic and receive the same supplementary reading as the students in condition 2. The students are subsequently tested on the material. The following scores (%) were obtained: Table 2: Ways of Presenting a Topic in the Class Condition 1 Lecture Condition 2 Lecture + Reading Condition 3 Film + Reading 92 86 81 86 93 80 87 97 72 76 81 82 80 94 83 87 89 89 92 98…

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