A university is subdivided into faculties of Arts, Engineering, Humanities, Law and Science. The numbers of students in these faculties are 1300, 800, 1100, 500 and 1400 respectively. A questionnaire concerning library usage is sent to all the students. The first 300 replies opened contained 101 from Arts students, 30 from Engineering students and 69, 17 and 83 from students of the other three faculties respectively. Using a 0.1% significance level, test whether the replies appear to be providing an unbiased representation of the students in the university.

Q: A manufacturer of household appliances wanted to determine if there was a relationship between…

A: The objective is to validate if an association between "family size" and "size of washing machine…

Q: Health insurance benefits vary by the size of the company. The sample data below show the number of…

A: The Chi-square test is also known as the test of goodness of fit. Because it enables us to ascertain…

Q: orty studens ha dass at an ney can speak. Complete the table. Foreign Language Gender Chinese…

A: Explanation of the answer is as follows

Q: rcher conducts a between-subjects experiment. He compares three treatment conditions and produces 25…

A: Between-subject is the study in which every treatment is given to different subjects and each…

Q: Conduct a test of independence to determine whether health insurance coverage is independent of the…

A: The null and alternative hypotheses are as follows; Claim : Health insurance coverage is independent…

Q: a. The proportion of Pennsylvanians with a high school diploma is equal to 0.83. b. The proportion…

A:

Q: The Condé Nast Traveler Gold List provides ratings for the top 20 small cruise ships. The data shown…

A: Part a)  We need to determine an estimated regression equation that can be used to predict the…

Q: 1. The chi-square test statistic is equal to |(Round to 2 decimal places) 2. The degrees of freedom…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Six different plug-in hybrid vehicles were tested for their electric-only driving range. The same…

A: We have to find the median .

Q: “Snoqualmie” is a name shared by a waterfall and a tribe of Native Americans. In a study of the…

A: The provided data is,

Q: Construct a 90% confidence interval for the true difference between the mean amounts of time spent…

A:

Q: A random sample of 1400 Internet users was selected from the records of a large Internet provider…

A: Given data A random sample of 1400 internet users was selected  and asked whether they would use…

Q: What was the mean score?

A: To compute the mean score, we need to add the scores of all those who responded and then divide the…

Q: A researcher randomly selected 100 adults aged 18-25 and 100 adults aged 50-60. Within each age…

A: Given, A researcher randomly selected 100 adults aged 18-25 and 100 adults aged 50-60. Within each…

Q: As part of a statistics project, a teacher brings a bag of marbles containing 500 white marbles and…

A:

Q: Of the boys in grades 4, 5 and 6 in elementary schools in Michigan, what proportion have as primary…

A: It is given that Total number of students = 569 Number of boys = 272 Number of girls = 297

Q: Use the Plan, Solve and Conclude steps in answering this question

A:

Q: The Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a…

A: Male :  Sample mean(M1) = 40.26  Standard deviation(S1) = 13.35  Female :  Sample mean (M2) = 36.85…

Q: Do you speak a second language? Do you play a musical instrument? results are summarized in the…

A:

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: A teacher is interested in the effect of a study session on quiz performance. Two different classes…

A: Mean : A data set's mean (average) is calculated by summing all of range|the amount|the quantity}s…

Q: benefits vary by the size of the company (the Henry J. Kaiser Family Foundation website, June 23,…

A: NOTE: As the significance level, i.e, α is not mentioned, I am taking it as 5%, i.e, 0.05. a). The…

Q: An experimenter investigated the effects of blue light exposure on people’s sleep quality.…

A: In the given research problem, there are two independent samples- Blue light and No Blue light. The…

Q: Which statistical test should she conduct?

A: We need to identify suitable statistical test for given situation

Q: Jose is the manager of a children's baseball league. Jose wants to know if the four new teams (teams…

A: 1. Consider that μ is the population mean number of games won in the whole league.

Q: Residents in a city are charged for water usage every three months. The water bill is computed from…

A: INTRODUCTION :   HISTOGRAM: The Histogram is often useful to represent a frequency distribution…

Q: Dr. Caldwell was also interested in learning whether the anxiety of child victims is related to…

A: Let  x = Testified  and y= Did not testify n= 10 sample size of testify m= 10 sample size of did not…

Q: A researcher wanted to know whether the level of frustration over high gas prices differed for…

A: Hypothesis test are used to determine the population by taking sample and compare them. Each…

Q: What kind of statistical test should be used to test the consumer group's research goal, assuming…

A: We have used the excel data analysis to run the ANOVA analysis.

Q: A certain company will purchase the house of any employee who is transferred out of state and will…

A: (a)

Q: Which two-way frequency table could represent the data?

A: here given , In a random survey, 2020 seventh graders and 3232 eighth graders are asked their…

Q: A J.D. Power and Associates vehicle quality survey asked new owners a variety of questions about…

A: The given data is as follows:Quality ratingSome HSHS GradSome CollegeCollege…

Q: a survey was given to 18 students. one question asked about the one-way distance the student had to…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How often do you go out dancing? This question was asked by a professional survey group on behalf of…

A: Let p1: proportion of single men who go out dancing occasionally p2:proportion of single women who…

Q: Conduct a test of independence to determine whether health insurance coverage is independent of the…

A: a) Applying chi-square test of independence: chi-square    χ2 =(Oi-Ei)2/Ei Yes No   small…

Q: Construct a 99%99% confidence interval for the true difference between the mean amounts of time…

A:

Q: certain company will purchase the house of any employee who is transferred out of state and will…

A: From the given data we conduct paired t test.

Q: A certain company will purchase the house of any employee who is transferred out of state and will…

A: (a) The provided table can be tabulated as: The alternative hypothesis suggests that the test is…

Q: expensive). The toy was priced the same at all retail stores. Compute the percentage of variance…

A:

Q: Part D: How did the absence of the type of students who skipped this question affect the average…

A: The average of a data is given by: x=x1+x2+...+xnn. So, the numerator is the sum of all the…