A random sample of 855 births included 434 boys. Use a 0.01 significance level to test the claim that 50.5​% of newborn babies are boys. Do the results support the belief that 50.5​% of newborn babies are​ boys?

Q: A large nationwide survey showed that 65% of high school students like Coca-Cola better than Pepsi.…

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Q: In a recent presidential election, 611 voters were surveyed and 305 of them said they voted for the…

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Q: A national publishing house claims that 45% of all weekly magazine readers in South Africa read…

A: Given: House claims 45% of weekly magazine The significance level is 5% The magazine readers are 500…

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

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Q: In a recent poll, 1095 randomly selected adults were asked whether they approve of labor unions; 65%…

A: The null and alternate hypothesis are H0 : p=0.69Ha : p<0.69 The test statistics is…

Q: random sample of 817 births included 433 boys. Use a 0,01 significance level to test the claim that…

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Q: in the study, 368 babies were born, and 210 of them were girls. Use the sample data with a 0.01…

A: Null Hypothesis: H0: The probability of a baby being a girl is not greater than 0.05. Alternative…

Q: 4. For migraine sufferers, is there an association between gender and relief from a migraine with a…

A: Given: α=0.01

Q: In​ 1997, a survey of 940 households showed that 151 of them use e-mail. Use those sample results to…

A: From the provided information, Sample size (n) = 940 151 of them use e mails that is sample…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.05 significance level,…

A: Here we've to test independency so we Chi-square test Statistic. Hypothesis option (A) is correct.…

Q: Randomly-selected residents in two cities were asked to identify which of four different issues was…

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Q: concerned group of citizens wanted to know if the proportion of armed robberies in Texas was…

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Q: 2. In a 2009 nonscientific poll on the Web site of the Daily Gazette of Schenectady, New York,…

A: Given, X=615 n=1200 α=0.01 Therefore, the predicted proportion of all adult Americans who are less…

Q: In a simple random sample of 78 NCAA Division III Football games, the team that scored first won the…

A: Denote p as the true proportion of teams that scores first, win the game.

Q: A fast-food restaurant manager wants to know if more than 60% of his customers that request a water…

A: Given,   The sample proportion is,

Q: Based on a USA Today poll, 10% of the population believes that college is no longer a good…

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Q: A national publishing house claims that 27% of all weekly magazine readers in South Africa read…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: A Gallup poll conducted April 1-21, 2021, found that 548 out of 961 American adults approve of the…

A: Given: Number of success (x) = 548 Number of trials (n) = 961

Q: A national publishing house claims that 35% of all weekly magazine readers inSouth Africa read their…

A: Null Hypothesis: H0: The proportion of all weekly magazine readers in South Africa read their…

Q: An article reported the folloving frequencies with which ethnic characters appeared in recorded…

A: We have given that  Four groups of Ethnical : African American, Asian, Caucasian, Hispanic  And…

Q: In a random sample of soldiers who fought in the Battle of Preston, 774 soldiers were from the New…

A: The hypotheses are given below: Null hypothesis: H0:p=0.25 Alternative hypothesis: H1:p>0.25 The…

Q: Find the proportion of female bears in the study. Use a 0.05 significance level to test the claim…

A: Given:   Age Gender 19 M 55 M 81 M 115 M 104 F 100 F 56 M 51 M 57 F 53 F…

Q: In a random sample of soldiers who fought in the battle of Preston 774 soldiers were from the new…

A: Solution: It is required to test the claim that fewer than one quarter of the soldiers were…

Q: In a survey of 247 households, it was found that 168 owners had a dog as a pet. In a survey of 282…

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Q: A concerned group of citizens wanted to know if the proportion of armed robberies in Texas was…

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Q: A report just came out that stated that 22% of all Americans say that vanilla is their favorite ice…

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Q: A soda company distributes diet cola in bottles label 32 oz. The Department of Trade and Industry…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Let n1=315 peoples group who dream black and white instead of color over the age of 55, and let…

Q: Suppose that in a random selection of 100100 colored​ candies, 2323​% of them are blue. The candy…

A: It is given that the sample proportion of blue colored candies is 23% and the sample size is 100.The…

Q: Are females more likely than males to stay in an unsatisfactory job? To answer this question, Fox-…

A: The hypotheses are given below: Null hypothesis: H0:p1≤ p2 Alternative hypothesis: H1:p1>p2 Test…

Q: Do you believe that more than 92% of google play apps are free? to answer the question above, a…

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Q: random sample of 851 births included 431 boys. Use a 0.10 significance level to test the claim that…

A: Given data number of success , x= 431.0 sample size, n = 851 population…

Q: A random sample of 815 births included 434 boys. Use a 0.01 significance level to test the claim…

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Q: A study was designed to compare the smoking habits of married men with those  married women. A…

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Q: A random sample of 815 births included 427 boys use a 0.5 significance level to test the claim that…

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Q: A researcher finds that of 1000 people who said that they attend a religious service at least once a…

A: Denote p1 is true proportion of people who said that they attend a religious service at least once a…

Q: A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2887…

A: As due to the honor-code, we are authorized to answer only 3 subparts for each question and that you…

Q: Two random samples, one of 95 blue-collar workers and a second of 50 white-collar workers, were…

A: In this context, the aim is to test whether the type of workers and opinion are related or not.…

Q: A marketing company claims that it receives 8% responses from its mailing. To test this claim, a…

A: Given: p0=0.08x=25n=500p^=xn=25500=0.05

Q: A superintendent of a school district in St. Louis wants to compare their student preference of…

A: Consider that p1, p2 is the true proportion of students prefer chocolate mill for St. Louis and Las…

Q: A national publishing house claims that 28% of all weekly magazine readers in SA read their…

A: Given X=104 n=400

Q: Suppose that in a random selection of 100100 colored​ candies, 2323​% of them are blue. The candy…

A: Let p is population proportion of blue candies.Given information:Sample size (n) = 100Significance…

Q: In a previous poll, 38% of adults with children under the age of 18 reported that their family ate…

A: Given, The sample proportion is, The null and alternative hypothesis is:

Q: A fast-food restaurant manager wants to know if more than 60% of her customers that request a water…

A: Solution: Let X be the number of customers filled the water cup with soda and n be the sample number…

Q: A national publishing house claims that 37% of all weekly magazine readers in South Africa read…

A: Given : Claim : 37% of all weekly magazine readers in South Africa read their publication.

Q: A health insurance company wants to determine if more than 25% of US residents have been to a…

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Q: 4. In a poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a 0.05…

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Q: In a nursing home study, the researchers found that 15 out of 34 randomly selected small nursing…

A: Let P1 be the proportion of small nursing homes had a resident vaccination rate less than 80%Let P2…

Q: According to the Centers for Disease Control and Prevention (CDC), the mean BMI of U.S. men of age…

A: Sample mean of given data: Sum of numbers = 8644.65 Total numbers = 315 Sample mean = X  = 27.4…