A yearbook company was investigating whether there is a significant difference between two states in the percents of high school students who order yearbooks. From a random sample of 150 students selected from one state, 70 had ordered a yearbook. From a random sample of 100 students selected from the other state, 65 had ordered a yearbook. Which of the following is the most appropriate method for analyzing the results?     A one-sample zz-test for a sample proportion A A one-sample zz-test for a population proportion B A two-sample zz-test for a difference in sample proportions C A two-sample zz-test for a difference in population proportions D A two-sample zz-test for a population proportion

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending…

A: Given: Sample size,n= 76 Number of students who have jobs,x= 35  Level of significance=0.05

Q: testing in this problem? mean proportion What is the level of significance? e the null and alternate…

A: Given:p_0=35%=0.35 As the population proportion is given, thus we are testing the single…

Q: The U.S. Census Bureau computed the proportion of U.S. residents who lived in each of the four…

A: Solution: Given information: k= 4  Categories  n= 80+129+209+118 = 536  total observation   α=0.05…

Q: In 1941, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: We have given that For the survey taken in 1941 n1 = 1100x1 = 374p̂ = x1/n1 = 151/429 = 0.3520 And…

Q: What is the standard error of the sampling dis- tribution of the mean for the following? a. o, = 48,…

A:

Q: In 1940, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Let p1 represents the population proportion of 1940 adults who were total abstainers and p2…

Q: Bopulation proportion of 1943 adults who were total abstainers and p, represent the population…

A: Solution: Given N1=1100,  X1=429 N2=1100,  X2=374 (α)= 0.05

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A:

Q: According to the Government Accountability Office, 80% of all college students ages 18 to 23 nad…

A:

Q: A poll in Canada states that 67% of all respondents favor imposing the death penalty. The poll was…

A: Given that - A poll in Canada states that 67% of all respondents favor imposing the death penalty.…

Q: student decides to spin a dime and determine the proportion of times it lands on heads. The student…

A: We have given that  Sample size n = 25 Favorable cases x =17 Population proportion p =0.5

Q: Jamu Sido Mampir Company has herbal medicine cottage branches in three locations. The company…

A: NoHerbal Hut 1Herbal Hut 2Herbal Hut…

Q: A survey (sample ) of 300.  112 favor Republican candidate.  Construct the 98%CL for the true…

A: Given that,   The sample proportion is,

Q: Mother smoking Infant colic Yes No Total status Yes 15 167 182 No 111 2477 2588 Total 126 2644 2770

A: The given data is as follows:Mother smoking statusInfant…

Q: In an AOL survey of Internet users, this question was posted online: "Have you ever been hit by a…

A: A population is a collection of all possible observations, whereas a census tries to gather whole…

Q: In 1942 ​, an organization surveyed 1100   adults and​ asked, "Are you a total abstainer​ from, or…

A: The proportion of considered subjects, on which we are interested from a sample can be termed as…

Q: In a test for equality of two proportions, the sample proportions were p1 = 32/60 and p2 = 20/60.…

A: p1 = 32/60 and p2 = 20/60. n1=60 ,n2=60

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

Q: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Let, X1= number of abstainer in the previous test n1= total sample size of the past test p1^ =…

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

A: applying one way ANOVA on above data:   Mean n Std. Dev Variances budgets 257.4 5 11.7388…

Q: Harley Davidson motorcycles make up 13% of all the motorcycles registered in the United States.You…

A: Approximate distribution is normal

Q: In 1944​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: We habe to find given proportion.

Q: recent poll reports that between 53% and 59% of voters will vote for president george in the next…

A: The confidence interval is (53%, 59%).

Q: A random sample of 72 households was selected for a phone survey. The key question asked​ was, "Do…

A:

Q: NBA Draft Picks. FromWikipedia’s on-line document “List of First Overall NBA Draft Picks,” we found…

A:

Q: What is the Sample Variance for the following numbers: 79, 77, 50, 49, 35

A:

Q: 1950, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on…

A: In 1950, Total adults n1=1100                       x1=374 In recent year…

Q: What is the Sample Variance for the following numbers: 84, 66, 44, 17, 11, 65, -5, 51, 88

A: Given data  84, 66, 44, 17, 11, 65, -5, 51, 88 Find sample variance ?

Q: A researcher asks a sample of brothers and sisters to rate how positive their family environment was…

A: Design of experiment is a branch of statistics. This basically deals with the planning, conducting…

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.