In a survey, 37% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result to be too high, so he randomly selected 200 pet owners and discovered that 73 of them spoke to their pet on the telephone. Does the veterinarian have a right to be skeptical? Use the a = 0.1 level of significance. Because npo (1- Po) = 46.6 > 10, the sample size is less than 5% of the population size, and the sample is given to be random, the requirements for testing the hypothesis are satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? Ho: (Type integers or decimals. Do not round.) versus H,:

Q: When the sample size is 15 and you are doing a t test, the number of degrees of freedom is 15. True…

A: Given that  Sample size n =15 Degree of freedom =df =n-1

Q: A teacher would like to determine if quiz scores improve after completion of a worksheet. The…

A: X= Pre quiz Y= Post quiz Means: x¯=∑i=1nXin=25920=12.95y¯=∑i=1nYin=29720=14.85 Sample standard…

Q: The Bangor Humane Society tracks cat adoptions closely, and in the past has seen 60% of people who…

A: We know if we have sample size n and number of success is X then, proportion of success is    p^ =…

Q: Use the sign test to test the indicated claim. A researcher wishes to test whether a particular diet…

A: Given Information: Sample size (n) = 24 After one month on diet, for 18 people the second blood…

Q: What would the p-value be for a sample if the test statistic is 0.968 and the significance level is…

A: Given data: Test statistics = 0.968 The test is assumed to be right tailed test. Significance level…

Q: a study was conducted to determine the proportion of people who dream in black and white instead of…

A: The objective of this question is to test the claim that the proportion of people over 55 who dream…

Q: In a survey, 43% of the respondents stated that they talk to their pets on the telephone. A…

A: The question is about hypothesis testing.Given :Population proportion of respondents who talk to…

Q: Ashudy w conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: A shareholders group is lodging a protest against your company. The shareholders group claimed that…

A: Test - stats (t) = x¯-μsn

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…

Q: There are 145 people who participate in a training about compassion, and their compassion scores are…

A: In paired t test, it is needed to check the significant difference between two variables of same…

Q: In​ 1997, a survey of 980980 households showed that 176176 of them use​ e-mail. Use those sample…

A: The provided information are:

Q: The sample size is 40, why not use the " one mean z-test?

A: Sample size n=40 Sum of observations ∑x=1200 The sum of the square of observations ∑x2 85000…

Q: a study was conducted to determine the proportion of people who dream in black and white instead of…

A: The objective of this question is to conduct a hypothesis test to determine if the proportion of…

Q: An online poll asked: "Do you believe the Loch Ness monster exists?" Among 21,816 responses, 63%…

A: Solution-: Given: We find, (a) Identify the test statistic (b) Identify p-value (c) Identify the…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Dear student as per guidelines we answer the first three subparts only. Please post other subparts…

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

A:

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

Q: In a random sample of 315 people 90 of them were smokers. Based on the above sample test whether the…

A:

Q: A psychologist believes that the frequency that a person engages in sexual activity without a…

A: Chi square test is used to determine the independence of variables in the data set. There are four…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Denote p1, p2 as the proportions of all people who dream in black and white instead of color under…

Q: Suppose 242 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: Given that  n=242 , X=50 , p=20%=0.20

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: The random variable X follows binomial distribution. We have to use normal approximation to binomial…

Q: What are the null and alternative hypotheses? Họ: | versus H,: (Type integers or decimals. Do not…

A: Given : Proportion of respondents who stated they talk to their pets on phone = 0.45 Sample size =…

Q: After Halloween, your statistics instructor wanted to find out if there was a significantly…

A: Data given 40,52,55,45,48,45,50,60 n=8

Q: In a survey, 37% of the respondents stated that they talk to their pets on the telephone. A…

A: given  P0 =0.37 n=170

Q: Test the hypothesis that a majority (more than 50%) believe the rich should pay more taxes than they…

A: here given , Suppose a poll is taken that shows that 281 out of 500 randomly selected, independent…

Q: A marketing agency wanted to determine if a new commercial changed people's opinion about a company.…

A: Statistical hypothesis means the decision about a population parameter. Here we look at the data we…

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20…

A:

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: In a survey, 45% of the respondents stated that they talk to their pets on the telephone. A…

A: Given,n=240x=104p^ =xn p^ =104240 p^ =0.4333H0 :P=0.45H1 : P<0.45α=0.01

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

A: From  the given information,   α=0.07

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.