A department store, A, has four competitors: B, C, D, and E. Store A hires a consultant to determine if the percentage of shoppers who prefer each of the five stores is the same. A survey of 1100 randomly selected shoppers is conducted, and the results about which one of the stores shoppers prefer are below. Is there enough evidence using a significance level α = 0.10 to conclude that there is a preference?   Store A B C D E Number of shoppers 262 234 204 190 210

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: 6.9, 6.9, 6.7, 7.8, 6.1, 7.2, 7, 7.5, 6.7, 6.6, 7.1, 7.9, 6.4, 7.3, 7, 7.3, 7.4, 7.4, 7.6, 7.2, 7,…

A: Given that data  6.9, 6.9, 6.7, 7.8, 6.1, 7.2, 7, 7.5, 6.7, 6.6, 7.1, 7.9, 6.4, 7.3, 7, 7.3, 7.4,…

Q: . Are the data consistent?

A: Given:  Total no of person =500  Nonof person preferred variety A = 400  Nonof person preferred…

Q: Is there a relation between incidents of child abuse and number of runaway children? A random sample…

A: The given information is as follows:

Q: a game of basketball, a group of students split into two randomly chosen teams.  The heights (cm) of…

A:

Q: b) Professor Enos, a sociologist, is doing a study to see if there is a relationship between the age…

A: Given information: In order to study the relationship between the age of young adult and the type of…

Q: In an effort to understand the feelings of American adults about the government, one thousand…

A: Given that:  When a random sample of 1000 American adults, i.e., n=1000, was asked if they approved…

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

A: Given information: The data represents the values of the variables overall score, shore excursions…

Q: a. Clean these data and identify any irregularities in the data Determine the values in the data…

A: a. The irregularities are the respondents that are not in the options. The irregularities are…

Q: Conduct a test of independence to determine whether the hours of sleep on weeknights are independent…

A:

Q: Response Great Britain France Italy Spain Germany United Sta Strongly favor 140 160 299 132 128 205…

A: Observed frequency (O) table : a)  sample in this poll = total  = 6448

Q: Mr. James, president of Daniel-James Financial Services, believes that there is a relationship…

A: Table: X Y X2 Y2 XY 14 24 196 576 336 12 14 144 196 168 20 28 400 784 560 16 30 256 900…

Q: A soft drink company is interested in knowing whether there is a relationship between cola…

A: Level of significance: From the given information, α=0.025 Claim: Test whether there is any…

Q: A researcher is trying to determine the factors affecting the Entrance Exam Scores (EES) of the…

A: No Location Type of school IQ Entrance Exam Score 1 1 2 1 1 2 1 2 1 2 3 1 2 1 1 4 1 1 2 2…

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

A:

Q: Mr. James, president of Daniel-James Financial Services, believes that there is a relationship…

A:

Q: A professor wants to know which type of instructional mode students had more satisfaction.  The…

A: Online Hybrid Face-to-Face 3 3 4 3 3 1 3 1 3 2 2 2 2 1 3

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.