Scenario 6Birds use color to select and avoid certain types offood. The authors of a particular article studied thepecking behavior of 1-day-old bobwhites. In an areapainted white, they inserted four pins with differentcolored heads. The color of the pin chosen on the bird'sfirst peck was noted for each bobwhites, resulting inthe accompanying table.BlueGreen Yellow Red16117|6Do these data provide evidence of a color preference?Test using a significance level of 1%. Let p1, p2, p3, p4be the proportions of bobwhites whose first peck iseach of the four colors.Suggestion: write out the steps of the goodness-of-fit hypothesis test.

Chi square χ2 goodness of fit test compares the distribution of proportions in each category…

Answered: Scenario 6 Birds use color to select…

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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In a study of factors that influence brand switching by a certain demographic, the following factors were identified as being significant as judged by the responses of the 439 participants in the survey. 1: Better price 2: Friend's recommendation 3: Seeing others use it 4: Interesting packaging 5: Buzz-people talking about the brand 6: An advertisement 7: Press stories 8: Entertainer/sports celebrity endorsement The results of the survey follow. 1 2 3 4 5 6 7 8 6.9 Respondents (%) 68.8 60.2 22.6 20.8 16.8 16.8 14.7 Let A denote the set of factors that had a response greater than 20%, let B denote the set of factors that had a response between 15% and 25%, and let C denote the set of factors that had a response less than 25%. Find the following. Factor (a) n(A), n(B), n(C) n(A) = n(B) = n(C) = (b) n(An B) (c) n(AC n C) (d) n(An B) (e) n(An C) (f) n[(AUB) n C]
A recent study indicates that people tend to select video game avatars with characteristics like those of their creators (Bélisle & Bodur, 2010). Participants who had created avatars for a virtual community game completed a questionnaire about their personalities. An independent group of viewers examined the avatars and recorded their impressions of the avatars. One personality characteristic considered was introverted/extroverted. The following frequency distribution of personalities for participants and the avatars they created. Is there a significant relationship between the personalities of the participants and the personalities of their avatars? Test with α = .05.
In a study of factors that influence brand switching by a certain demographic, the following factors were identified as being significant as judged by the responses of the 439 participants in the survey. 1: Better price 2: Friend's recommendation 3: Seeing others use it 4: Interesting packaging 5: Buzz—people talking about the brand 6: An advertisement 7: Press stories 8: Entertainer/sports celebrity endorsement The results of the survey follow. Factor 1 2 3 4 5 6 7 8 Respondents (%) 68.6 60.2 22.8 20.6 16.6 16.6 14.7 6.9 Let A denote the set of factors that had a response greater than 20%, let B denote the set of factors that had a response between 15% and 25%, and let C denote the set of factors that had a response less than 25%. Find the following. (a) n(A), n(B), n(C) n(A) = n(B) = n(C) = (b) n(A ∩ B) (c) n(Ac ∩ C) (d) n(A ∩ Bc) (e) n(Ac ∩ Cc) (f) n[(A ∪ B) ∩ C]
I need help with 4 and 7
For each situation, name the type of bias that may occur in the data collected. Explain your answer. a) A school wants to gather parent opinions on the current cell phone policy at the school. They have sent letters with a survey for the parent to return to the school board office. b) A survey about teaching strategies used in the “Secondary Classes” (7-12th grades) for a school district was handed out to a random sample of teachers from the three high schools in the district.Less than 20% of the surveys were returned. c) A survey with the question “Do you agree that a national system of health insurance should be favored because it would provide health insurance for everyone and reduce administrative costs?”
A forestry official is comparing the causes of forest fires in three regions. The following table shows the causes of fire for 100 randomly selected recent fires in these three regions. (in photo) Test at a 5% significance level whether causes of fire and regions of fires are related.
In a recent study, a scientist was interested in investigating whether there is a significant difference in the number of sleeping hours in different moon phases: waxing crescent, full moon, and waning crescent. Participants’ number hour of sleep were recorded in the table below. Quality of sleeps (in number of hours) Waxing Crescent Full Moon Waning Crescent 7 8 9 7 8 4 5 4 3 6 5 7 8 9 6 What are the groups being compared? That is, what are the levels of the IV? What is the IV? What is the level of measurement of the IV?
Exhibit 12-15 The table below gives social media preferences for random samples of men and women. Facebook Instagram LinkedIn Total 630 310 290 1230 750 430 240 1420 1380 740 530 2650 We are asked to test for independence between gender (i.e., men and women) and social media preferences. Men Women Total Refer to Exhibit 12-15. If gender and social media preference is independent then the expected number of women who prefer LinkedIn would be O O 640 246 740 284
Myers-Briggs: Personality Types Isabel Briggs Myers was a pioneer in the study of personality types. The personality types are broadly defined according to four main preferences. Do married couples choose similar or different personality types in their mates? The following data give an indication (Source: I.B. Myers and M.H. Mccauley, A Guide to the Development and Use of tile Myers-Briggs Type Indicators). Similarities and Differences in a Random Sample of 375 Married Couples Number of Similar Preferences Number of Married Couples All four 34 Three 131 'I\vo 124 One 71 None 15 Suppose that a married couple is selected at random. Use the data to estimate the probability that they will have 0, 1, 2, 3, or 4 personality preferences in common. So the probabilities add up to 1? Why should they? V\lnat is the sample space in this problem?

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