A humane society claims that less than 39​% of U.S. households own a dog. In a random sample of 402 U.S.​ households, 155 say they own a dog. At α=0.01​, is there enough evidence to support the​ society's claim? (a) Write the claim mathematically and identify H0 and Ha. ​(b) Find the critical​ value(s) and identify the rejection​ region(s). (c) Find the standardized test statistic.​ (d) Decide whether to reject or fail to reject the null​ hypothesis, and​ (e) interpret the decision in the context of the original claim.

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: It is given that the proportion of fatal traffic accidents in the country in which the driver had a…

Q: A. Write the claim mathematically and identify H0 and Ha. ​B. Find the critical​ value(s) and…

A: Given a sample of 1000 home buyers and 463 among them found their real estate agent through…

Q: An article in the newspaper claims that 60% of registered drivers have the organ donor designation…

A: This question is based on hypothesis testing. Specifically, this question was asked to verify the…

Q: During the electoral campaign, the mayor comes under criticism that City Hall and local public…

A:

Q: A medical researcher says that less than 72% of adults in a certain country think that healthy…

A: From the given information, the hypothesized proportion value is 0.72.

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Given thatSample size (n)=113Population proportion=0.34Number of positive BAC(x)=52We have to find…

Q: To combat antibiotic resistance, the Quality Improvement Consortium recommends a throat swab to…

A: Here, the test is left tailed.

Q: Researchers suspect that 18% of all high school students smoke at least one pack of cigarettes a…

A: Given data,n = 300x = 50p0 = 18% = 0.18α = 0.05Point estimate (p^) = xn= 50300= 0.167

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: p0 = 0.34n = 113x = 52Significance level (α) = 0.05sample proportion(p̂) = = = 0.4601769912

Q: newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper…

A: Given data number of success , x= 620.0 sample size, n = 1200 population…

Q: It has been reported that 65% of the U.S. adult population play video games in their leisure time. A…

A: Given that  Sample size n =195 Favorable cases x =125 Sample proportion p^=x/n  =125/195 =0.6410

Q: In 2017, 32% of business owners gave a holiday gift to their employees. A 2018 survey of 33 business…

A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: sample size(n)=109x=50population proportion(p)=0.34sample proportion()=

Q: In a random sample of 765 adults in the United States, 322 say they could not cover a $400…

A: a) Here population under consideration is adults in United States who cover $400 unexpected expense…

Q: Minnesota had the highest turnout rate of any state for the 2012 Presidential election (United…

A: The question is about hypothesis testing.Given :Sample no. of registered voters from rural areas of…

Q: A campaign manager for a political candidate released a series of advertisements criticizing the…

A: H0: P = 0.45Ha: P < 0.45n = 500, x = 220P^ = xn = 220500 = 0.44z = -0.45P value = 0.33

Q: A medical researcher says that less than 25​% of adults in a certain country are smokers. In a…

A: Given information Total no of adults = 250

Q: What is the P-value?

A: Given: Sample size =160  x = 5 smoked 21 or more cigarettes during pregnancy α=0.1 level of…

Q: (a) State the null (H0) and alternate (Ha) hypotheses.       H0:      Ha:      (b) If the null…

A: The null and alternative hypotheses are H0: p = 0.7 H1: p>0.7

Q: What are the null and alternative hypotheses? Ho: versus H₁: (Type integers or decimals. Do not…

A: It is given that the proportion of fatal traffic accidents in the country in which the driver had a…

Q: A medical researcher says that less than 72% of adalts in a certain country think that healthy…

A: From the given information, let X be the number of adults in a certain country think that healthy…

Q: The university professor is interested in comparing how much students learn in online versus…

A: Step 1: List the given values. We are given the following: sample mean  for score for students in…

Q: A random sample of n = 16 students are given the new cold medication and are asked to take the…

A:

Q: A medical researcher wants to begin a clinical trial that involves systolic blood pressure (SBP) and…

A: The null and alternative hypotheses are; The correlation between the variables is obtained using…

Q: In a survey of 1000 drivers from Region​ A, 867 wear a seat belt. In a survey of 1000 drivers from…

A: According to guidelines we solve three subpart

Q: Vertical banded gastroplasty is a surgical procedure that reduces the volume of the stomach in order…

A: Level of significance is the probability of rejecting null hypothesis when it is true. Here, level…

Q: researcher investigates whether or not a new cold medication affects mental alertness. A…

A: It is given that the mean is 64 and the standard deviation is 8.

Q: A survey found that 76% of the men questioned preferred computer-assisted instruction to lecture and…

A:

Q: Researchers suspect that 20% of all high school students smoke at least one pack of cigarettes a…

A: Given n=300 X=57

Q: Two researchers conduct separate studies to test Ho: p=0.50 against Ha: p0.50, each with n = 400.…

A: Given Information: Null Hypothesis H0:p=0.50 Alternative Hypothesis Ha:p≠0.50 Sample size n=400…

Q: A research center claims that more than 31% of employees in a certain country have changed jobs in…

A: We hve given that,  number of success =  x= 91 sample size = n =260 population proportion =…

Q: A medical researcher says that less than 79​% of adults in a certain country think that healthy…

A: It is given that:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: We have given thatp0 = 0.34n = 113x = 52Significance level () = 0.05

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A:

Q: In recent years, approximately 55% of eligible voters take the time to vote in presidential…

A: Givensample size(n)=200x=128α=0.05

Q: A manufacturer of MP3 players conducts a set of comprehensive tests on the electrical functions of…

A:

Q: Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients…

A: Pain Free  Yes No Treatment 15 61 76 Control 7 73 80 Total 22 134 156   a) The correct…

Q: A nutritionist claims that the proportion of females who consume too much saturated fat is lower…

A:

Q: n education researcher claims that 53​% of college students work​year-round. In a random sample of…

A: Given : p = 0.53 n = 300 Level of significance = 0.01

Q: A supplier of HDTV’s claims that only 1% of their TV’s are defective. In a random sample of 600…

A: