In 2005, Health Canada claimed that 16.9% of Canadian adults are obese. A researcher wanted to check whether this percentage has decreased in 2009. He randomly selected 225 Canadian adults and found 33 of them are obese. Use3% significance level. Null and alternative hypothesis are     H0: p < 0.169, H1: p >= 0.169     H0: mu >= 16.9, H1: mu < 16.9     H0: mu < 16.9, H1: mu >= 16.9     H0: p >= 0.169, H1: p < 0.169

Q: A study was performed to determine the percentage of people who wear life vests while out on the…

A: Answer  Given  Sample proportion [p1] =0.886 Sample proportion [p2] =0.935 sample size [n1] =500…

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: Identify the null and alternative hypotheses for this test. Choose the correct answer below.

A: Here Given  Sample size=n=212 X=54 Claim-More than 20 % of user develop nausea.

Q: Some experts believe that 24​% of all freshwater fish in a country have such high levels of mercury…

A: Given Data

Q: A graduate student believes that people consider faces with more contrast between eye color and skin…

A: Explanation for the first part: Given a null hypothesis H0, we either conclude that there is not…

Q: A graduate student believes that people consider faces with more contrast between lip color and skin…

A: From the provided information, The hypotheses are as follow: H₀: The level of contrast between lip…

Q: nausea. H₁ p=0.20 OB. Ho p=0.20 H₁ p>0.20 OC. Ho p>0.20 H₁: p=0.20 OD. Ho p=0.20 H₁ p<0.20 Identify…

A: Sample size n=234Favorable cases x=51

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: Suppose 214 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A:

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

A:

Q: According to an exit poll for an​ election,54.8 ​% of the sample size of 831 reported voting for a…

A: We have sample proportion p=54.8%=0.548   and sample size n=831 To test that the population…

Q: A random sample of 829 births included 430 boys. Use a 0.05 significance level to test the claim…

A: given data,n=829x=430α=0.05p^= xn=430829=0.5187claim:51.4% of newborn babies are boys.

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

A:

Q: if a two-tailed test has a 5% significance level and a p-value of 0.01 do we reject Ho

A: It is given that the There is a two-tailed test problem with a 5% significance level. P-value is…

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: A new study shows that 35% of adults have never been married. To test if that is a true claim, we…

A: Given: n= 250.0 ,x= 97.0 p= 0.35 ,significance level(∝)= 0.05p̂= 97.0 / 250.0 =0.388

Q: suppose 223 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: In a random sample of​ males, it was found that 24 write with their left hands and 226 do not. In a…

A: State the hypotheses. Let p1 denotes the proportion rate of left handedness in males. Let p2 denotes…

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: Determine whether the alternative hypothesis is supported at a 0.05 significance level.

A: From the obtained results, The test statistic is 13.20. The critical value is 1.64.

Q: Consider a drug testing company that provides a test for marijuana usage. Among 324 tested​…

A: Given that  Sample size=324 Number of subjects wrong (X)=26 Population proportion=0.10 Significance…

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: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: Given X=1723 n=2500

Q: According to an article in Bloomberg Businessweek, New York City's most recent adult smoking rate is…

A:

Q: cording to a survey, the average American person is in a car for 5 hours per week. To test if the…

A:

Q: A survey of 1200 TV households showed that 53.5% of them had at least one stand-alone streaming…

A: Let p be the population proportion  p=majority=1/2=0.50=50%, n=1200, p^=sample…

Q: their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. What is the…

A: Given: sample size,n = 7 population mean, μ = 6.6significance level, α = 5% = 0.05

Q: In a random sample of soldiers who fought in the Battle of Preston, 774 soldiers were from the New…

A: The hypotheses are given below: Null hypothesis: H0:p=0.25 Alternative hypothesis: H1:p&gt;0.25 The…

Q: . Clinical trials involved treating flu patients with Tamiful, which is a medicine intended to…

A: State the hypotheses.

Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given that, x=54,n=214 The sample proportion is, Null and alternative hypothesis:

Q: What is the P value?

A: We have given that  p0=39/(32+39)=0.5493 α=0.05

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

A:

Q: Suppose 224 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A: The objective of this question is to test a claim about a population proportion using a sample…

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: The accompanying table gives amounts of arsenic in samples of brown rice from three different…

A: There are 3 independent samples which are Arkansas, California and Texas. We have to test whether…

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

A:

Q: Suppose 219 subjects are treated with a drug that is used to treat pain and 51 of them developed…

A: From the provided information, Population proportion (p) = 0.20 Sample size (n) = 219 Out of which…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.