Test the given claim. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, and then state the conclusion about the null​ hypothesis, as well as the final conclusion that addresses the original claim. Among 2077 passenger cars in a particular​ region, 223 had only rear license plates. Among 335 commercial​ trucks, 48 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars. Use a 0.10 significance level to test that hypothesis. a. Test the claim using a hypothesis test. b. Test the claim by constructing an appropriate confidence interval.

Q: Hawaii state law requires that businesses offer health insurance to employees that work at least 20…

A: The objective is to obtain the variable of interest, the nature of the sample is being considered,…

Q: Suppose that in a random selection of 100 colored​ candies, 26​% of them are blue. The candy company…

A: Given information: Sample size (n) =100 Sample proportion = 0.26 Significance level = 0.05 Let…

Q: Explain the difference between an independent and dependent sample. Choose the correct answer below.…

A: The objective is to explain the difference between an independent and dependent sample.

Q: If a hypothesis is not rejected at the 5% level of significance, it will ______. Select one: A.…

A: According to the given information  If the p value is less than or equal to the level of…

Q: Researchers prefer conducting z tests because it gives us more than enough information to make…

A: Given statement:  Researchers prefer conducting z tests because it gives us more than enough…

Q: An environmentalist wishes to conduct a hypothesis test on the percentage of cars driven in the city…

A: Sample size (n) = 173Population proportion (p) = 0.08Thus,

Q: Suppose that in a random selection of 100 colored​ candies, 30​% of them are blue. The candy company…

A: Given information n = 100 coloured candies p-hat = 0.30 p = 25% Claim :- Percentage of blue candies…

Q: Assume 4812 people are randomly selected. Approximately 59.4% of them have added bleach to their…

A: p = 0.60 , n = 4812

Q: Assume that you plan to test a claim that p1 - p2 > 0. Use the given sample sizes and numbers of…

A: The sample proportions are

Q: Since an instant replay system for tennis was introduced at a major tournament, men challenged 1434…

A:

Q: A study reports that 75 percent of young adults in a county get their news from online sources. A…

A: One proportion z test:   One proportion z test is used for comparing the observed population…

Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average…

A: We have to find type of test ..

Q: Suppose that in a random selection of 100 colored​ candies, 21​% of them are blue. The candy company…

A: Given that, n=100,p=0.25p^=0.21 The null and alternative hypothesis is,

Q: Suppose that in a random selection of 100colored​ candies, 29​% of them are blue. The candy company…

A: Claim: percentage of blue candies is equal to 26​% Null Hypothesis: H0:p=0.26 The percentage of blue…

Q: A physical therapist wanted to know whether the mean step pulse of men was less than the mean step…

A: In above table  Given 95% CI for difference in mu men - mu women  (-10.67,-1.13)

Q: A quality engineer is asked to determine whether less than 2% of all flasks received by its company…

A:

Q: State the type of error (Type I or II) that has been made for the following claims. A. Claim: More…

A: Type 1 Error: Type 1 error is the incorrect rejection of a true null hypothesis. This is also known…

Q: A new quality control system has been introduced at a company to detect the percentage of defective…

A: In hypothesis testing, we start by defining the null hypothesis (H0) and the alternative hypothesis…

Q: A manufacturer claims that 95% of its fax machines are good. In a random sample of 88 such fax…

A: It is given that out of 88 machines, it is found that 98% are good. The sample proportion, p is…

Q: Assume 4812 people are randomly selected. Approximately 59.4% of them have added bleach to their…

A: The null and alternative hypothesis is; The given level of significance is; α = 0.10 Given to us…

Q: In a recent court case it was found that during a period of 11 years 857 people were selected for…

A: Given: Sample size (n) = 857 Sample proportion (p̂) = 0.38  Population proportion (p) = 0.78…

Q: In a hypothesis test, the likelihood of rejecting the null hypothesis is independent of the sample…

A: Introduction: In a hypothesis testing problem, the decision regarding rejection/ failure of…

Q: Solve the problem. A researcher wants to use a paired sample to determine whether the mean number of…

A: In the given problem we need to test whether there is difference between the mean number of hours…

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 36 of the…

A: The given data is,Echinacea GroupPlacebo GroupThe significance level,

Q: Suppose that in a random selection of 100 colored candies 20% of them are blue. I candy company…

A:

Q: in a random selection of 100 colored​ candies, 23​% of them are blue. The candy company claims that…

A: To test the claims that the percentage of blue candies is equal to 28​%, the null and alternative…

Q: claimed that in a bushel of peaches, less than 10% are defective. A sample of 400 peaches is…

A: Given that p=10%=0.10, n=400, x=50 It is claimed that in a bushel of peaches, less than 10% are…

Q: The table below includes results from polygraph (lie detector) experiments conducted by researchers.…

A: We want to find the Chi square value by using contingency table.

Q: K In a July 2017 report, a research firm stated that 39% of people from a certain region reported…

A: Approach to solving the question:  Detailed explanation: Examples: Key references:

Q: in this exercise, we are conducting many hypothesis tests to test a claim. assume that the null…

A: We are conducting many hypothesis tests to test a claim. assume that the null hypothesis is true.…

Q: A researcher wants to investigate the effect of anti-anxiety medication on depression. To do so, she…

A: Group one : Placebo treatment Second group: Medication A researcher wants to investigate the effect…

Q: A school psychologist designed a study to investigate the effectiveness of three study programs. A…

A: A sample of 30 students were randomly selected and assigned to one of the three programs. Here…

Q: In a recent Gallup poll of 511 adults, 64% said that they were in favor of death penalty for a…

A: GivenSample size(n)=511sample proportion(p^)=0.64Assume population proportion(p)=0.5α=0.01Claim is…

Q: e that in a random selection of 100 colored candies, 22% of them are blue. The candy company claims…

A: given data, n=100p=0.22the candy company claims that the percentage of blue candies is equal to…

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.