A study addressed the issue of whether pregnant women can correctly guess the gender of the baby. Among 110 recruited​ subjects, 53.6​% of them correctly guessed the gender of the baby. Use these sample data to test the claim that the success rate of such guesses is no different than the​ 50% success rate expected with random chance guesses. Use a 0.01 significance level. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, and​ P-value, then state the conclusion about the null​ hypothesis, as well as the final conclusion that addresses the original claim. Use the​ P-value method. Use the normal distribution as an approximation of the binomial distribution. Identify the null and alternative hypotheses. Choose the correct answer below.

Q: In a recent​ poll, 810 adults were asked to identify their favorite seat when they​ fly, and 495 of…

A: Givenn=810p=495p^=xn=495810=0.611p=0.5α=0.01

Q: c. Would a 90% confidence interval based on this sample be wider or narrower than the 95% interval?…

A: It is given that Sample proportion, p^ = 82% = 0.82Sample size, n = 800

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: Identify the null hypothesis, alternative hypothesis, test statistic, p-value, initial and final…

A: As the provided claim about the population in terms of proportion, the test statistic (single…

Q: A statistics student believes that black cars are less likely to receive tickets for moving…

A: It is given that the P-value is 0.24.

Q: In a study of pregnant women and their ability to correctly predict the sex of their baby, 56 of the…

A: The provided information are:

Q: In his book, "The Signal and the Noise," Nate Silver analyzed 733 predictions made by experts…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any one question Hence I am…

Q: Small-business telephone users were surveyed 6 months after access to carriers other than Carrier A…

A:

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

A: State the hypotheses. That is, the proportion of the men and women have equal success in…

Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

A:

Q: A magazine reported that 47% of Canadians are confident they will take a winter vacation at some…

A: Given that  Sample size n =65 Favorable cases x =27 Sample proportion p^=x/n  =27/65 =0.4154 NOTE:-…

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: Since an instant replay system for tennis was introduced at a major tournament, men challenged 1437…

A: Hypothesis is an assumption that is being tested.

Q: In a study of 780 randomly selected medical malpractice lawsuits, it was found that 473 of them were…

A:

Q: Consider a sample of 55 football​ games, where 31 of them were won by the home team. Use a 0.05…

A: State the hypotheses.

Q: In the US, 46% of all people have type O blood, 39.2% have type A blood, 10.6% have type B blood and…

A:

Q: A study addressed the issue of whether pregnant women can correctly guess the gender of the baby.…

A: State the hypotheses. That is, the success rate of such guesses is no different than the 50%…

Q: Online customer service is a key element to successful online retailing. According to a marketing…

A:

Q: A hospital claims that at least 83% of their craniectomies are successful. A doctor of the hospital…

A: Given: p=0.83 Hypothesis: The null hypothesis is given below: H0: p≥0.83 The alternate hypothesis is…

Q: random sample of 841 births included 428 boys. Use a .10 significance level to test the claim that…

A: Given : Claim : 51.3​% of newborn babies are boys.

Q: Consider a sample of 45 football​ games, where 25 of them were won by the home team. Use a 0.01…

A: We conduct Z test for proportion from the given information.

Q: Since an instant replay system for tennis was introduced at a major​ tournament, men challenged 1438…

A: The random variable calls follows binomial distribution. There are two independent samples which are…

Q: Christine, a researcher in psychology and biobehavioral health, believes that city residents and…

A: That is, there is no evidence to conclude that there is difference between the two proportions.…

Q: In the US, 45.9% of all people have type O blood, 39.3% have type A blood, 10.8% have type B blood…

A: a.   It is needed to check whether the distribution of blood type is different for millionaires.

Q: Use Excel to test whether the true proportion of complaints submitted on a Monday is different from…

A: It is given that  Population proportion, p = 20% = 0.20 Favourable cases, X = 13 Sample size, n = 50

Q: A poll asked whether states should be allowed to conduct random drug tests on elected officials. Of…

A: n = 21410 p^ = 0.72 99% ci for p

Q: A CEO wondered if her company received either more or less complaints from its workers on Monday…

A: Answer: From the given data, Population proportion (P) = 20%                                       =…

Q: In a study of 779 randomly selected medical malpractice lawsuits, it was found that 470 of them were…

A:

Q: A business student claims that the choice of flight class is independent of a persons education…

A: Answer  Given  [O]            Y1           Y2               Y3            Total X1            68…

Q: In November of 1997, Australians were asked if they thought unemployment would increase.  At that…

A: Given Information : In November of 1997, Australians were asked if they thought unemployment would…

Q: Christine, a researcher in psychology and biobehavioral health, believes that city residents and…

A: From the provided information, n1=109x1=59n2=108x2=72α=0.1

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 250 tested subjects,…

A: Given, among 250 tested subjects, results from 28 subjects were wrong. i.e. n=250 and X=28…

Q: A study investigated various aspects of drug use among pregnant women: With 95% Confidence,…

A:

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

A: The provided information are: Number of colored candies (n) = 100 Sample proportion (p^) = 0.21…

Q: In a study of 817 randomly selected medical malpractice​ lawsuits, it was found that 495 of them…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.