In a random sample of 1022 Canadian adults, 480 think that the Canadian government is doing too little to protect the environment. In another random sample of 1008 Canadian adults taken 10 years ago, 514 think that the Canadian government is doing too little to protect the environment. At a=0.10, can you reject the claim that the proportion of US adults who think that the Canadian government is doing too little to protect the environment hasn't changed?

Q: (a)State the hypotheses that can be used to test for a significant difference between the population…

A: Given: p1^=4101000p2^=4201200

Q: Based on information from a previous study, r1 = 37 people out of a random sample of n1 = 97 adult…

A: The provided information are:

Q: A researcher conducts an independent-measures study comparing two treatments and reports the t…

A: Given :  A researcher conducts an independent-measures study comparing two treatments and reports…

Q: A dietician read in a survey that 85.36% of adults in the U.S. do not eat breakfast at least 3 days…

A:

Q: Doctors nationally believe that 78% of a certain type of operation are successful. In a particular…

A: Introduction: Denote p as the true national proportion of operations that are successful. As it is…

Q: Based on information from a previous study, r1 = 38 people out of a random sample of n1 = 104 adult…

A: The parametric test contain the assumption of normally distribution. But the non parametric test is…

Q: Previous research has established that nationwide, for older adults, the average score on the Beck…

A: Given: μ=8.13σ=1.56n=200x¯=8.45α=0.01

Q: A study by Consumer Reports showed that 62% of supermarket shoppers believe supermarket brands to be…

A: Givenconsumer reports showed that 62% of supermarket shoppers believesupermarket brands to be good…

Q: According to a certain government agency for a large​ country, the proportion of fatal traffic…

A: Solution: Given information: n= 110 Sample size of traffic fatalities x= 49 traffic fatalities…

Q: The American Association of Individual Investors (AAII) conducts a weekly survey of its members to…

A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: The sample size is n=105 The number of favorable cases x=47 The sample proportion is…

Q: Based on a poll of registered voters in a large city, 120 out of a random sample of 250 women…

A: Given Information: Sample 1 (women): Sample size n1=250 Out of which x1=120 intended to vote for…

Q: In a random sample of 1000 persons from U.P. 510 were found to be consumers of cigarettes. In…

A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: The sample size is 108, and population proportion is 0.36. Checking condition:…

Q: A study by Consumer Reports showed that 62% of supermarket shoppers believe supermarket brands to be…

A: a.) The following information has been given: Hypothesized population proportion is p=0.62. Null and…

Q: In a random sample of 300 patients with rheumatoid arthritis, 192 of them responded favourably to a…

A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Solution: Given information: n= 109 Sample size of  traffic fatalities . p0= 0.34 Population…

Q: A sociologist was interested in the decline of racial discrimination in a particular geographical…

A: (A). Identify the independent and dependent variable: The researcher is interested to test whether…

Q: n the cancer institute of Philippine General Hospital, there were 529 patients who undergo…

A:

Q: A sample of n = 100 scores is selected from a population with u = 100 with o = 30. On average, how…

A: The formula of the standard error of the mean is,

Q: In a National Institute on Alcohol Abuse and Alcoholism survey, 33% of American adults said that…

A: Given: n= 2300 ,x= 805 p= 0.33 ,significance level(∝)= 95.0 p̂= 805 / 2300 =define hypothesis;-

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Givenn=106x=48p^=xn=48106=0.4528α=0.01

Q: Based on information from a previous study, r1 = 30 people out of a random sample of n1 = 107 adult…

A: Here is given that r1 = 30    r2 = 46    n1 = 107   n2 = 107 we will find proportions of both…

Q: Historically, the proportion of people who trade in their old car to a car dealer when purchasing a…

A: Solution: Given information: n= 115  Sample size  x= 46 success  p^=xn=46115=0.40 sample proportion…

Q: Based on information from a previous study, r1 = 38 people out of a random sample of n1 = 106 adult…

A:

Q: A certain financial services company uses surveys of adults age 18 and older to determine if…

A: a. Null Hypothesis: H0:p1=p2 Alternative Hypothesis: Ha:p1-p2≠0 Test Statistic: From the given…

Q: Based on information from a previous study, r1 = 39 people out of a random sample of n1 = 105 adult…

A: The test statistic for the difference of proportion is, Z=p1-q1P^(1-P^)1n1+1n2wherep1 and p2=sample…

Q: A market research study conducted by a local winery on white wine preference found the following…

A: Let p1 denote the proportion of women who prefer white wine, p2 denote the proportion of men who…

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Given : p = 0.37 n = 114

Q: A local jam production company is confident that 60% of the population will like its new grapefruit…

A: Here events are independent.

Q: The American Association of Individual Investors (AAII) conducts a weekly survey of its members to…

A: a. Given: n=300, p=0.332 The null and alternative hypothesis is, H0:P=0.385Ha:P≠0.385 The test…

Q: A certain financial services company uses surveys of adults age 18 and older to determine if…

A: Here 2 proportion of Z test statistics is applicable.   ===========================

Q: A research center claims that 31% of adults in a certain country would travel into space on a…

A: To testH0:p=0.31H1:p≠0.31 where p0=0.31

Q: In a previous year, 61% of females aged 15 and older lived alone. A sociologist tests whether this…

A: According to our guidelines we can answer only first question and rest can be reposted.

Q: The manufacturer of a new racecar engine claims that the proportion of engine failures due to…

A: Step 2: n1=135 n2=175 x1=14 x2=8 The sample proportion of p^1 is, p^1=x1n1    =14135   =0.104

Q: what is the null and alternative hypothesis?

A: Here use basic of hypothesis testing  Here test the claim that proportion of new car buyers that…

Q: In a sample of 88 children selected from a city, 8 children suffer from asthma. What is the P-value…

A: Statistical hypothesis testing is an important method in inferential statistics. Statistical tests…

Q: 31% of all pygmy softshell tortoises have stripes on their shells. A herpetologist in Cititon…

A:

Q: An organization published an article stating that in any one-year period, approximately 11.5 percent…

A:

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A: Given information: According to a government agency for a large country, the proportion of fatal…

Q: A study of 200 randomly selected occupants in passenger cars and 250 randomly selected occupants in…

A: Here, p1 represents the proportion of occupants in passenger cars and p2 represents the proportion…

Q: Two different types of injection-molding machines are used to form plastic parts. A part is…

A:

Q: In a previous year, 59% of females aged 15 and older lived alone. A sociologist tests whether this…

A:

Q: A study by Consumer Reports showed that 64% of supermarket shoppers believe supermarket brands to be…

A: We have given that  Sample size n= 100 Favorable cases x = 54 Sample proportion p^=x/n…

Q: In a sample of 88 children selected randomly from one town, it is found that 8 of them suffer from…

A: Given information- Sample size, n = 88 It is found that 8 of them suffer from asthma. So, x = 8 So…

Q: The manufacturer of a new racecar engine claims that the proportion of engine failures due to…

A: Solution: Given information: n1= 115 Sample size of new engine x1= 12 new engine failed n2= 120…

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

A: Givenx=173n=260p^=xn=173260=0.6654α=0.05

Q: Suppose an experiment finds that people taking a new herbal remedy get fewer colds than people…

A: Given an experiment that people taking a new herbal remedy get fewer colds than people taking a…

Q: The manufacturer of a new racecar engine claims that the proportion of engine failures due to…

A: Given data : x1= 14.0 n1= 135 x2= 8.0 n2= 175

Q: 3 out of 4 american adults under age 35 have eaten pizza for breakfast. if a random sample of 20…

A: Let the R.V X denotes the number of adults eaten pizza for breakfast and it follows the binomial…

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.