f you are asked to conduct a test, you need to write all the 5 steps. Step I. write correct hypothesis Step II. Calculate the value of test statistic Step III. Find out the rejection region or calculate the p-value Step IV. Write the decision Step V. Write a conclusion in the context of the problem  The government of a country reports its literacy rate aa 52%. A non-governmental organization believes it to be less. The organization takes a random sample of 600 inhabitants and obtains a literacy rate of 42%. Perform the relevant test at the 1% level of significance. a. using the critical value approach b. using the p- value approach

Q: According to a candy company, packages of a certain candy contain 17% orange candies. Suppose we…

A: a. It is given that package contain 17% of orange candies. A sample of 400 candies is considered.…

Q: Consider a question one could have come across in college, career, or personal life. Describe and…

A: Scenario:In District 12, a highly competitive congressional election is in progress, featuring the…

Q: n choose the appropriate test and name the​ population(s). A researcher asks a random sample of 200…

A: When the variable of interest is categorical in nature, it indicates that we are dealing with the…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: By using the standard normal table, the critical value zα2 at the 99% confidence level is, 2.576.…

Q: Determine the sample proportion. It has been determined with 95% confidence that the proportion of…

A:

Q: When comparing two sample proportions with a two-sided alternative hypothesis, all other factors…

A: Here, two sample proportion two sided test is being conducted. A smaller p value is found. The p…

Q: A student would like to estimate the average number of text messages sent by cell-phone users in a…

A:

Q: A poll asked respondents if they had taken a vacation in the last year. The respondents were…

A: Given information is: From above table, we can conclude the following: Total number of respondents…

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: The goals scored per game by a soccer team represent the first quartile for all teams in a league.…

A: The goals scored per game by a soccer team represent the first quartile for all the teams in a…

Q: A veterinarian is interested in the habits of the dogs who come in. He wants to estimate what…

A: The objective of the question is to conduct various statistical tests and intervals based on the…

Q: I am doing a survey and want to know how many siblings each participant has. Participant 3 leaves…

A: Introduction: Consider that there are n participants in the study. Each participant is asked how…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

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: A report shows that 32% of citizens want to move out of theirneighborhood. An alderman wants to test…

A: The objective of the question is to identify the appropriate statistical test to determine if the…

Q: Identify the population and the sample. Describe the sample data set. A survey of 143 law firms in…

A:

Q: Researchers at a drug company are testing the duration of a new pain reliever. The drug is normally…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Random digit dialing telephone surveys used to exclude cell phone numbers. If the opinions of people…

A: Cell-only sample Landline sample Democrat or lean Democratic 49 47 Refuse to lean either way…

Q: State the appropriate null and altemate hypotheses. Ho This hypothesis test is a (Choose one) test.…

A:

Q: An electronics company wants to gauge public opinion on its products. They send out a business reply…

A: An electronic company wants to gauge public opinion on its product. The company wants the public…

Q: tephanie is trying to figure out the sample size of an experiment. She knows the population SD is…

A: Solution: Given information: σ= 41.5    Population standard deviation σx= 2.7   Standard deviation…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given,margin of error(E)=0.025Assume sample proportion(p^)=0.5α=1-0.90=0.1α2=0.05Z0.05=1.645   (from…

Q: A marketing agency wanted to determine if a new commercial changed people's opinion about a company.…

A: Statistical hypothesis means the decision about a population parameter. Here we look at the data we…

Q: Assume that experience with the satisfaction rating scale indicates that a population standard…

A: Given n1=280, n2=300  Level of significance ɑ=0.05   x̄1=83, x̄2=82  Standard deviations σ=14

Q: He then filled 80 simple white cups with soda, half diet and half regular, and asked each person to…

A: a. The hypotheses are given below: Null hypothesis: H0:p=0.5 Alternative hypothesis: H1:p≠0.5 Since…

Q: B Identify the sample proportion and use the symbol that represents it C. For the hypothesis test,…

A: Given that, n = 1048 B) The sample proportion is denoted as sample proportion of adults rate…

Q: An article in a newspaper states that the proportion of traffic accidents involving road rage is…

A: The proportion of traffic accidents last year is 10%.

Q: boat capsized and sank in a lake. Based on an assumption of a mean weight of 143 ​lb, the boat was…

A: Given n=70 Mean=178.9 Standard deviation=35.8

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.