In a given year, 13.5% of working people in the US claim to be a member of a union. A research team was hired to randomly contact 2000 city workers and 240 claims union membership. Is there a sufficient evidence to cook conclude that the proportion of workers in this large city (population 500,000) who are union members is different from the national right? (Use a significance level of 0.05 (Alpha)) Question what is the null hypothesis (Ho) and what is the alternative hypothesis (Ha)

Q: Samples of pages were randomly selected from three different novels. The Flesch Reading Ease scores…

A: Given P-value =0.00068408599

Q: dults randomly selected for a poll were asked if they "favor or oppose using federal tax dollars to…

A:

Q: Which of the following is the hypothesis test to be conducted? OA. Ho: p=0.5 H₁: p<0.5 OC. Ho: p<0.5…

A:

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

A:

Q: In 2005, Health Canada claimed that 16.9% of Canadian adults are obese. A researcher wanted to check…

A: Given, The sample proportion is,

Q: One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from…

A: Givensample size(n)=1050x=95significance level(α)=0.05

Q: In a given year, 13.5% of working people in the US claim to be a member of a union. A research team…

A: Let p be the population proportion of workers who are union members. There is 13.5% of working…

Q: A simple random sample of size n 200 drivers with a valid driver's license is asked if they drive an…

A: Solution: Given information:  n= 200 Sample size of drivers  x = 122 drivers drive an American made…

Q: According to the American Diabetes Association, 23.1% of Americans aged 60 years or older had…

A: given data claim : p &gt; 0.231n = 200x = 52α = 0.05

Q: In a recent court case it was found that during a period of 11 years 856 people were selected for…

A: From the provided information, Sample size (n) = 856 Sample proportion (p̂) = 0.38 Level of…

Q: Adults randomly selected for a poll were asked if they "favor or oppose using federal tax dollars to…

A: GIVEN DATA, 451- in favor450- opposed102-unsure 1003- total peopleα=0.05 claim:p=0.50x= no. of  in…

Q: Adults randomly selected for a poll were asked if they "favor or oppose using federal tax dollars to…

A: Given that:Sample size is:Number of favourable cases: Level of significance is: Population…

Q: A high school principal wanted to know if there was a difference in absences for 9th grade, 10th…

A: Treatment Obs. 1  Obs. 2  Obs. 3  Obs. 4  Obs. 5 Sum T T_bar 9th grade 6 9 6 7 7 35 1225 10th…

Q: One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from…

A: A random sample of 1053 students in which 95 report using illegal drugs.

Q: In 1990, 6.1% of job applicants who were tested for drugs failed the test. At the 0.01 significance…

A: Followings are the exlpnation of the question  Use the One sample Z proportion test Given that, The…

Q: An author argues that more​ American-born baseball players have birth dates in the months…

A: Hypotheses: The null hypothesis is: H0­ : Months of births of baseball players are independent of…

Q: Adults randomly selected for a poll were asked if they "favor or oppose using federal tax dollars to…

A:

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

A:

Q: A random sample of 834 births included 433 boys. Use a 0.05 significance level to test the claim…

A:

Q: A researcher looks at the mean salaries of male and female electricians and decides based on the…

A:

Q: One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from…

A: From the provided information, Sample size (n) = 1043 From which 96 report using illegal drugs.…

Q: Explain why this study is not an experiment.  A. No treatment was imposed on the subjects to affect…

A: An experiment involves the manipulation of an independent variable by the researcher to observe its…

Q: 4) A plan for an executive travelers' club has been developed by an airline on the premise that 7%…

A: It is given that out of 300 customers, it is found that 27 would qualify The sample proportion, p is…

Q: A research group claims that 20% of patients with dementia never develop full Alzheimer's. In a…

A: According to the given question, to test the hypothesis that the research group claims that 20% of…

Q: According to a geographic report, in the United States, 20% of all families renting condos will move…

A:

Q: The research department at the home office of New Hampshire Insurance conducts ongoing research on…

A: Given:n1 = 400x1 = 120n2 = 600x2 = 150α = 0.05Research Question: Is there a significant difference…

Q: Is there an association between hair color and body type? The table below shows the results of a…

A: Correct statistical test: The correct statistical test to test the association between two…

Q: Do the results support the belief that 51.5​% of newborn babies are​ boys?

A: Given : number of success , x= 430.0 sample size, n = 845 population proportion,p=…

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: Does this data provide statistically significant evidence that there is a difference in the…

A: For Hispanic adults, sample size n1 = 640 and sample proportion is 4.6% = 0.046 For white adults,…

Q: The Airline Passenger Association studied the relationship between the number of passengers on a…

A:

Q: One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from…

A: Given data

Q: Adults randomly selected for a poll were asked if they​ "favor or oppose using federal tax dollars…

A:

Q: An author argues that more​ American-born baseball players have birth dates in the months…

A: The data indicates the months of births for a sample of​ American-born baseball players and​…

Q: Is the addition of SOUTH and URBAN statistically valuable (at the .05 significance level)?  How do…

A:

Q: 2. In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one…

A: We have given that  p0=39/(39+32)=0.5492

Q: A study was conducted simultaneously in two different communities in New York City to examine an…

A: p-value: A p-value is used to measure the probability to obtain the results and the assumption was…

Q: he drug Ritalin is designed to stimulate the central nervous system. In a random sample of 252 boys…

A: Solution: Given information: n= 252 Sample size of boysx = 44 boys taking Ritalin p^= xn=44252=…

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Given that  Sample size n =200 Favorable cases x =30 Sample proportion p^=x/n  =30/200 =0.15

Q: this provide convincing evidence that a majortiy of American supported nuclear arms reduction at the…

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Q: 64% of adults said that they approved of the death penalty in some circumstances. The newspaper took…

A:

Q: Adults randomly selected for a poll were asked if they​ "favor or oppose using federal tax dollars…

A:

Q: An author argues that more​ American-born baseball players have birth dates in the months…

A: Given :

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.