A polling company reported that 33% of 2302 surveyed adults said that they play baseball. What is the exact value that is 33% of 2302? What could be the actual number of adults who said that they play baseball? Among the 2302 respondents, 334 said that they only play hockey. what percentage of respondents said that they only play hockey?

Q: A child dying from an accidental poisoning is a terrible incident. Is it more likely that male child…

A: From the provided information, Sample size (n) = 1830 Male (x) = 1031 Level of significance (α) =…

Q: The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An…

A:

Q: there are 347 people that take a survey and assume that 112 of them are women. what percentage of…

A: The percentage of females in the survey is calculated below:

Q: A group of randomly selected members of Mothers' Club were asked how many kids they have. The table…

A: The most reasonable estimate for the number of mothers’ club members who have fewer than 2 kids is…

Q: The General Social Survey asked a sample of 1294 people whether they performed any volunteer work…

A: The null and alternative hypothesis, This is the right-tailed test, for α=0.05 The critical value…

Q: A hot topic of debate is whether the legal driving age should be raised to eighteen. From a random…

A: It is tested whether majority of the Americans believe the legal driving age should be raised to 18.…

Q: At the 5% level, is there enough evidence to show that the proportion of Australians in November…

A: It is given that Sample size n = 631 Number of Australian thought unemployment would increase, X =…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Given Information: Proportion p=0.77 Sample size n=50 Out of which x=33 records involved an…

Q: an you conclude that the percentage of people aged 18-29 who have a tattoo is less than 25%

A: Given : n=830 , X=166 , p0=0.25 , α=0.01 The estimate of the sample proportion is ,…

Q: In 2008, a highway safety administration reported that the number of pedestrian fatalities in City A…

A:

Q: 6 of the last 10 sundaes sold had nuts. Considering this data, how many of the next 5 sundaes sold…

A: The probability that sundaes sold had nuts is, Psold sundaes have nuts=610=0.6 The probability that…

Q: A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a…

A: Given,          Sample proportion  P∧=0.09          Margin of Error∈=0.04          and…

Q: A researcher knows from decades of past research that scores on IQ tests have an average μ = 100.…

A: The given information is that a researcher knows from decades of past research that scores an IQ…

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: Let x be a total number of applicants with a Math SAT score.Then, it is given that 32% of x had a…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample isneeded in…

A:

Q: Suppose that a poll taken 10 years ago found that 56% of parents spank their children. Suppose a…

A: In a poll 10 years ago it is found that 56% of parents spank their children.

Q: A manager at e-Bay wants to determine the current percentage of U.S. adults who now use the…

A: Obtain the sample size of a preliminary estimate for p is 0.73 The formula of sample size is, Use…

Q: A population has a stand. dev. of 24. on average, how much difference should there be between the…

A:

Q: Miller Junior High is considering changing its school colors.  The results of a survey that 16 out…

A: Topic : unitary method

Q: Polling company reported that 57% of 2286 and said that they play football. What is the exact value…

A: Given values, Percentage of adults who play football = 57% Total number of adults = 2286 Number of…

Q: A child dying from an accidental poisoning is a terrible incident. Is it more likely that a male…

A: Given: A child dying from an accidental poisoning.  It is showed that out of 1830 children between…

Q: A random study reported that 74% of very-low-birth-weight babies graduate from high school by age…

A: Given that, The probability of very high low birth weight babies graduate from high school by age 20…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Given , Sample size = n = 54 Number of intoxicated driver = x = 35 Sample proportion = p^ = 3554 =…

Q: among the 1018 respondents, 428 said that pesticides are "not at all harmful."  What percentage of…

A: Total number of respondents = 1018Total number of respondents said that pesticides are "not at all…

Q: A random sample of 180 men who took the driving test found 103 passed. A similar. sample of 225…

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

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A:

Q: If in a discrete data, 75% of the values are less than 30, then......?

A: we know that,  If Q1 is first quartile then we can say that 25% data points are below Q1. If Q2 is…

Q: a pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A: Given P=0.09 E=0.06 Z(0.01)=2.33

Q: An online poll of 810 students found the 53% of the respondents and critical thinking should be…

A: Given,   Sample size = 810 Sample proportion = 0.53   The null and alternative hypothesis is:

Q: An article in the Archives of Internal Medicine reported that in a sample of 224 men, 73 had…

A: Here 224 men and 232 women are selected randomly. 73 of the men had elevated cholesterol levels,…

Q: A sobriety test is 96% accurate. Suppose 2500 drivers were pulled over on suspicion ofintoxication,…

A: Given that the sobriety test is 96% accurate, 2500 drivers were pulled over on suspicion of…

Q: According to a recent Pew Research Center report, many American adults have made money by selling…

A: Given Data: x=914 n=4579   p^=xn=9144579=0.1996

Q: Most adults would erase their personal data from the internet if they could. A software firm survey…

A:

Q: The mean of 200 observations was 80, later on, it was found that two  observations were misread as…

A:

Q: Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: Among college students, the proportion p who say they're interested in their congressional…

A: Given that  Sample size n =260 Favorable cases x =185 Sample proportion p^=x/n  =185/260 =0.7115…

Q: uppose the proportion of all college students who have used marijuana in the past 6 months is p =…

A:

Q: In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in…

A: Given that, x=634,n=1039 The sample proportion is,

Q: A 2014 Pew Research Center Survey asked 2,002 adults about the intersection of politics and science.…

A: The provided information are:Number of trials (n) = 2002Number of successes (X) = 1281

Q: The Centers of Disease Control and Prevention has launched studies of drug-resistant gonorrhea. Of…

A: Given  X1=8, n1=145, X2=18, n2=130 Pcap=X/n  We want to find the test statistic

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A:

Q: A Harriss poll taken surveyed 2016 adults and found that 423 of them had one or more tattoos. can…

A: The hypotheses for the test is given below.Null hypothesis:H0: p = 0.25Alternative hypothesis:H1: p…

Q: A scientist studied the spread of AIDS and concluded that 24% of people contracted the disease.…

A: A scientist concluded in a test that 24% of people contracted in the disease. The scientist was…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A: From the provided information, Study indicates that proportion of left-handed scientists is 9% that…

Q: If a person’s z score equals 1.61, what percentage of the observations are more extreme?

A:

Q: A magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

A:

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A:

Q: Do bathroom scales tend to underestimate a person's true weight? A 150 lb test weight was placed on…

A: The test hypotheses are given below: Null hypothesis:H0:p≤0.50 Alternative hypothesis:H1:p>0.50

Q: The 2004 General Social Survey asked a random sample of 977 adult Americans how often they feel…

A: The random variable X follows binomial distribution. The sample size is 977. The number of successes…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.