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: A random sample of 860 births in New york state included 434 girls. Use a 0.05 significance level to…

A: The aim is to test the claim that 48.8% of newborn babies are girls. The test hypotheses are given…

Q: For a left tail hypothesis test with a sample size of 10 and a .10 level of significance, the…

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

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

A: given data claim : p > 0.231n = 200x = 52α = 0.05

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: 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: 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: A random sample of 855 births included 434 boys. Use a 0.01 significance level to test the claim…

A: Given Data: p^=xn=434855 n=855   Null and Alternate Hypothesis: H0: p=0.505 H1: p≠0.505

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: 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: 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: 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: 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…

A:

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 :

Q: ional Budget Office reports that 36% of federal civilian employees have a bachelor’s degree or…

A: 1. The null hypothesis will be based on the previous that 36% of federal civilian employees have a…

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

A: The appropriate Null and Alternative Hypotheses are given below: From the given information, the…

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

A: The level of significance is 0.01.

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.