A company is conducting election related research for four candidates. Previous research showed that candidates were equally favored. the company is interested in determining if preferences has changed . A sample of 200 customers showed the following: candidate 1 Candidate 2 Candidate 3 Candidate 4 40 55 45 60 The expected frequencies for the categories are : Select one: O a. e1= 40, e2= 55, e3 = 45, e4= 60 O b. ej= 25, e2= 25, e3 = 25, e4= 25 e = 60, e2= 66, e3 = 68, e4= 50 d. e = 50, e2= 50, e3 = 50, e4= 50 %3D

A company is conducting election related research for four candidates. Previous research showed that candidates were equally favored. the company is interested in determining if preferences has changed . A sample of 200 customers showed the following: candidate 1 Candidate 2 Candidate 3 Candidate 4 40 55 45 60 The expected frequencies for the categories are : Select one: O a. e1= 40, e2= 55, e3 = 45, e4= 60 O b. ej= 25, e2= 25, e3 = 25, e4= 25 e = 60, e2= 66, e3 = 68, e4= 50 d. e = 50, e2= 50, e3 = 50, e4= 50 %3D

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A financial analyst claims that 19% make all purchases with cash, 17% make most purchases with cash, 20% make half of purchases with cash, 33% make some purchases with cash and 11% make no purchases with cash. You take a random selection to see if you can conclude that the distribution is different than what the financial analyst claims. Use a 10% significance to decide and round to the fourth. Categories ObservedFrequency ExpectedFrequency All Cash 38 Most Cash 115 Half Cash 135 Some Cash 231 No Cash 122 Test Statistic: Degrees of Freedom: p-val:
A researcher investigates whether classical music is more or less soothing to air-traffic controllers than modern music. She plays a classical selection to a group of people and measures their irritability. 24 hours later she plays the same group a modern selection and then measures their irritability. What test should she perform? Question 3 options: Single sample t test ANOVA Paired samples t test Independent samples t test
Gender and Award Preference: A two-way table showing preferences for an award (Academy Award, Nobel Prize, Olympic gold medal) by gender for the students sampled in shown below. Test whether the data indicate there is some association between gender and preferred award. Use a=.05 Two-way table of gender and preferred award Academy Nobel Olympic Total Female 20 76 73 169 Male 11 73 109 193 Total 31 149 182 362 How many degrees of freedom do we have for this test? Find the value of the chi-square statistic for the sample. Find the p-value. Do you reject the null hypothesis? Yes or no.
A manufacturing company that produces laminate for countertops is interested in studying the relationship between the number of hours of training that an employee receives and the number of defects per countertop produced. Ten employees are randomly selected. The number of hours of training each employee has received is recorded and the number of defects on the most recent countertop produced is determined. The results are as follows. Hours of Training Defects per Countertop 1 5 4 1 7 0 3 3 2 5 2 4 5 1 5 2 1 8 6 2 Copy Data The estimated regression line and the standard error are given. Defects per Countertop=6.717822−1.004950(Hours of Training)se=1.229787se=1.229787 Suppose a new employee has had 5 hours of training. What would be the 90% prediction interval for the number of defects per countertop? Round your answer to two decimal places.
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]
The question is in the attachment
ASAP
A group of 11 students was selected at random and asked for their high school GPA and their freshmen GPA in college the subsequent year. The results were: Student High School GPA Freshmen GPA 1 2.0 1.6 2 2.2 2.0 3 2.6 1.8 4 2.7 2.8 5 2.8 2.1 6 3.1 2.0 7 2.9 2.6 8 3.2 2.2 9 3.3 2.6 10 3.6 3.0 We would like to know whether there is a linear relationship between the high school GPA and the college freshmen GPA, and we would like to be able to predict the freshmen GPA, if we know that the high school GPA of another student is, say, 3.4. Provide the two requested scatter plots for this data (put college freshman GPA on the Y (vertical) axis!). a) What would be your approximate 95% prediction interval for question (g)? b) Show your scatterplot with the predicted trend line below
A town has to choose among three candidates for mayor: A, B, or C. We want to know whether the preference for mayor has no relation to the socio- economic class of the voters, classified as Rich or Poor. The opinions of a random sample of 500 citizens are shown in the table below. What is your conclusion? Use a level of significance of 0.05. Economic class of Preferred Candidate voter B 140 60 Poor Rich A 160 40 с 40 60
A marketer is examining the effectiveness of color scheme on the willingness to subscribe to a user's social media account. She creates three different profiles using three different color schemes: red, blue, and green. Twenty participants are asked to evaluate how much they like each of the profiles using a scale of 1 (do not like) to 5 (like a lot). What statistical procedure should you use to analyze these data? O independent groups t test O correlated groups t test O One Way Between Subjects ANOVA O One Way Repeated Measures ANOVA
A Statistics Canada researcher selects (at random) 10 apartments in one apartment building. The researcher then interviews all the residents in each of the 10 apartments selected. Which type of sampling did this researcher use?
Suppose a random sample of 1012 athletes from the college are asked what their major is. The table below shows the results of the survey. Outcome Observed Frequency Math/Science 186 Arts & Humanities 233 Business & Economics 311 Other 282 The distribution of majors at the college is shown in the second column of the table below. Fill in the expected frequencies. (Round to the nearest whole number). Frequencies of Majors at the College Outcome Expected Percent Expected Frequency Math/Science 23 Arts & Humanities 18 Business & Economics 31 Other 28