In a simple random sample of 600 men taken from a big city 400 are found to be smokers. In another simple random sample of 900 men taken from another city 450 are smokers. Do the data indicate that there is a significant difference in the habit of smoking in the two cities?

Q: Suppose it is claimed that the proportion of OSU students who belong to a fraternity or sorority is…

A: Given: Test is two-tailed and z = 0.40. The required P-value can be obtained by using the standard…

Q: An employee claims that 20% of the email she receives is personal, 60% is work related, and 20% is…

A: Given data An employee claims that 20% of the email she receives is personal 60% is work related and…

Q: At a certain college, it is estimated that at most 35% of the students ride bicycles to class. At…

A: given  let p = 0.35 represent the proportion of students who ride bicycles to class  let x = 28…

Q: Suppose that in a large class at a major university, the instructor announces that the average grade…

A: Given information- We have given the average grade on an exam = 72 Since we know that from the…

Q: When two births are randomly selected, the sample space for genders is bb, bg, gb, and gg. Assume…

A: it can be clearly seen that the probability of getting a boy or a girl is 0.5 in the given sampling…

Q: When two births are randomly​ selected, the sample space for genders is​ bb, bg,​ gb, and gg. Assume…

A: The given sample space is {(bb), (bg), (gb), (gg)}

Q: 4. This study is based on a random sample of [ Select ] * Gmail Smart Compose users. 63 39 62 40

A: For t test, d.f.= (n-1)

Q: 2-Is the source of news independent of age? Results of a random sample are in the following 2- way…

A:

Q: When two births are randomly​ selected, the sample space for genders is​ bb, bg,​ gb, and gg. Assume…

A:

Q: 1) Using the data from the American Community Survey (IPUMS), the Pew Research Center reported that…

A:

Q: What is the difference between selecting a member at random from a finite population and taking a…

A: A simple random sample is a random sample selected by a method in which all possible samples, of a…

Q: in a simple random sample of 25 companies, 23 have both twitter and facebook accounts. can we…

A:

Q: A food service director for a national corporation suspects that people are more likely to order…

A: a) Null Hypothesis: H0: The salad sales are not uniformly distributed across the days of the week.…

Q: Hi I am having difficulty answering this problem and need help, thank you.

A: Hey, since there are subpart questions posted, we will answer first three parts. If you want any…

Q: (a) In a random sample of 500 men from a particular district of UP, 300 are found to be smokers. In…

A: In the first district, Sample size=500Smokers=300 The percentage of smokers is calculated as, P1=No.…

Q: In a previous nationwide poll of a large country, 46% of adults with children under the age of 18…

A: The random variable X follows normal distribution. We have to test whether the proportion of…

Q: In a survey of 180 females who recently completed high school, 80% were enrolled in college. In a…

A: There are two samples which are females and males. The random variable college enrollees follow…

Q: Did the samples shown most likely come from the same population, or two different populations? If…

A: Given :

Q: In Hong Kong, some employers claim that they are willing to offer better starting salaries for those…

A: We know that, Association means the one variable is related in some way to another variable. There…

Q: Which do you think would have more variation: the GPA's of students in an honors college with a…

A: There are two cases: 1. the GPA's of students in an honors college with a prestigious university, 2.…

Q: Suppose that data are collected from a random sample of 48 male students and 91 female students at a…

A:

Q: Fifteen years ago, a complete survey of all undergraduate students at a large university indicated…

A: The data set is: 6.2, 7.1, 7.3, 6.8, 6.6, 7, 7.5, 6.8, 6.4, 6.5, 7.1, 7.3 and 6.8 The hypotheses…

Q: 12. Researchers at VCU studied fatal auto accidents between cars in which one has an air bag and the…

A: The population proportion by the sample proportion is calculated using the formula where is the…

Q: Given a population of 5 and a sample size of 3, what is the tota possible random samples that can be…

A: Given:  Population size, N = 5  Sample size, n = 3  The total number of random samples that can be…

Q: Based on a sample of 80 men, 35% owned cats Based on a sample of 40 women, 50% owned cats The test…

A:

Q: _________is used when each outcome in a sample space is equally likely to occur

A: Given that  Based on the given data

Q: The manager at Round Table Pizza Parlor claims that the number of pizzas sold each day is not the…

A: Introduction: Denote pSun, pMon, pTue, pWed, pThu, pFri, and pSat as the true proportions of pizzas…

Q: In SPSS , for a one sample t test, to find your p value for a one tailed test, multiply the p value…

A: Given statement, for a one sample t test, to find your p value for a one tailed test, multiply the p…

Q: If you draw a random sample of 100 scores from a large population of test scores and compute the…

A: As we increase z value, corresponding probability of occurence decreases. hence, The event among…

Q: A professor found out from a senior professor that engineering students in Harp University tend to…

A: Given information: μ=1.50x¯=1.35s=0.50n=9α=0.10

Q: Two random samples will likely have different means even if they are both the same size and both…

A: The two samples are selected randomly from same population.

Q: A study was commissioned to find t the residents in certain town. The s random sample of 114…

A:

Q: A​ state-by-state survey found that the proportions of adults who are smokers in state A and state B…

A: Consider p1 as the proportion of adults who are smokers in state A and p2 as the proportion of…

Q: 1 out of every 10 fish have blue on them. If you were to take a random sample of 60 fish, what is…

A: Let X denote the number of blue fish out of n = 60 fish. Let p denote the probability of getting…

Q: A school board would like to determine whether there is a difference in average SAT scores for…

A: Paired data is used when experimental Unit is same on which two different treatment are apllied

Q: If random samples, each with n = 16 scores, are selected from a normal population with µ = 100 and σ…

A: Here, the known values are n = 16 scores, µ = 100 and σ = 20.

Q: A local school board believes there is a difference in the proportion of households with school-aged…

A: Solution-: Let ps- the true proportion of households with school-aged children that would support…

Q: A random sample is one on which the

A:

Q: A simple random sample of heights of 6400 Englishmen has a mean of 67.85 inches and SD 2.56 inches,…

A: Since the sample size is large so we can assume normality.Null hypothesis: H0: Australians are same…

Q: A simple random sample of 100 high school students who took the AP exam in statistics is taken from…

A: Solution:- from given information Null hypothesis H0:p1=0.4,p2=0.25,p3=0.23,p4=0.12Alternate…

Q: If the 2412 leaves are not a random sample, but the researchers treated the 2412 leaves as a random…

A: The data would most certainly be "precise, but not accurate," since the sample is large enough to…

Q: A marketing researcher wishes to determine if over 60% of the wine drinkers prefer a certain brand…

A: It is given that Sample size n = 900 Number of drinkers prefer the brand of wine, X = 558

Q: In a random sample of 450 people aged 20-24, 24% were smokers. In a random sample of 400 people aged…

A:

Q: In a survey,  55% of the voters support a particular referendum. If 40 voters are chosen at random,…

A: Given that, 55% of the voters support a particular referendum.  Sample size = 40

Q: A telephone company claims that more than 15% of its customers have at least two telephone lines.…

A: It is given that Sample size n = 250 Number of customers who have at least two telephone lines, X =…

Q: According to Nielsen Media Research, of all the U. S. Households that owned at least one television…

A: From the provided information, The hypotheses can be constructed as: H0: p = 0.83 Ha: p < 0.83…