Suppose a researcher wants to test if the average diastolic blood pressure in Irish-Americans is different than the average diastolic blood pressure in the general population. Note that the average diastolic blood pressure in the general population is 70 mmHG. If the researcher forms a 95% confidence interval and finds this interval is equal to (71.9, 74.1), which in words says our mean is between 71.9 and 74.1, then what is the researchers conclusion for the hypothesis test at the 5% significance level? Group of answer choices Reject the null hypothesis

Q: A 90% confidence interval estimate for a population mean is determined to be 72.8 to 79.6. If the…

A: We know that a (1-α)% confidence interval for the population mean is given by; x¯-zα2σn, x¯+zα2σn…

Q: The scores on a standardized test are normally distributed. If a random sample of standardized test…

A: We know that, Confidence interval for population mean is given by :- ( x¯ -E ,  x¯+ E ) Where , x¯…

Q: Consider a sample of 100 people and subsequently a confidence interval calculated from the sample.…

A: The formula for calculating confidence interval is as follow:

Q: earchers wanted to know whether body mass index d conducted a study a study among 1,360 women ents…

A: A relative risk collates the risk of disease, injury, or death among one group with risk among other…

Q: a 95% confidence interval estimate for population mean is determined to be 75.38 to 86.52. if the…

A: We have  to find the confidence level is reduced to 90%, the confidence interval will....

Q: Believe it or not, there are some people who dont think that Duke will win the NCAA tournament this…

A: Obtain the 90% Confidence Interval for the IQ of DDs.   The 90% Confidence Interval for the IQ of…

Q: Suppose that the a college wants to have an idea of the average SAT score of the incoming freshman…

A: The confidence level is 0.90, the standard deviation is 310 and margin of error E is 50.

Q: You have a sample of 9 men and a sample of 8 women. The degrees of freedom for the t value in your…

A:

Q: Kiyo is confused. He has constructed a 90% confidence interval for the average age of students at…

A: Answer: Given that:     Kiyo is confused. He has constructed a 90% confidence interval for the…

Q: Suppose you are interested in the rate of autism among current school-aged children in Utah. You…

A: Given Information: Sample size n=400 Out of which 2 have had a previous diagnosis of an autism…

Q: An admission officer of a small liberal arts college wishes to compare the mean admission test…

A: Given: n1= 15 ,x̄1= 495.0 ,s1= 55.0 n2= 17 ,x̄2= 545.0 ,s2= 50.0 At 95.0 % confidence level with…

Q: If n=27, (x-bar)=34, and s=3, find the margin of error at a 90% confidence leve Give your answer to…

A:

Q: 04 people who work in computer-related jobs, and found that 40 of them have 6 months. fidence…

A: We have given that favourable cases X = 40, sample size n = 204 Sample proportion p^ = X/n.

Q: Suppose that you will be taking a random sample from a population and that you intend to find a 95%…

A: Solution: The confidence interval for the population mean is calculated by using the following…

Q: This is hourly data pertaining to the time it takes to serve a particular customer, in minutes. This…

A:

Q: Suppose that a 95% confidence interval for a population mean was calculated to be 101 to 121. If the…

A: The 95% confidence interval for the population mean is 101 to 121

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: If α = 0.05, then what is the confidence level?

A: Given: α = 0.05   we know that, Confidence level+ α = 1

Q: A human resource manager wants to see if there is a difference in the proportion of minority…

A: Given:- A human resource manager wants to see if there is a difference in the proportion of minority…

Q: SAT scores have a mean of 500 and a standard deviation of 100. Let’s continue with the above…

A: Given information :  Mean = x = 500 Standard deviation = σ = 100 level of significance = α = 0.05…

Q: If n = 28, = 38, and s 17, construct a confidence interval at a 99% confidence level. Assume the…

A: Given information- Sample size, n = 28 Significance level, α = 0.01 Sample mean, x-bar = 38 Sample…

Q: A human resource manager wants to see if there is a difference in the proportion of minority…

A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: “Over 24 weeks, systolic blood pressure in the low-carbohydrate diet group decreased by 9.6 mm Hg…

A: Confidence interval is an estimation technique is statistics.

Q: If a 90% confidence interval for µ is [15, 25],  then X=?, e=?

A: Note: Hello! Thank You for the question. We are considering 'e' as margin of error. From the given…

Q: Free of CVD       Prevalent CVD    Total Men          1548                 244                 1792…

A: Given The tota number of men with CVD =244The tota number of women with CVD =135The tota number of…

Q: A laboratory tested n = 101 chicken eggs and found that the mean amount of cholesterol was = 82…

A:

Q: Problem 1. For a normal population with known variance o?, what is the confidence level for the…

A:

Q: 18. Obesity Obesity is defined as a body mass index (BMI) of 30 kg/m² or more. A 95% confidence…

A: Given Data : Lower limit = 0.224 upper limit = 0.235

Q: The mean potassium content of a popular sports drink is listed as 149 mg in a 32-oz bottle. Analysis…

A: a) Suppose μ is the population mean potassium content in a particular sport drink.

Q: QUESTION 2 In which of the following situations we can not construct a confidence interval for the…

A: The condition for constructing the confidence interval for population proportion P using Normal…

Q: ou may need to use the appropriate appendix table or technology to answer this question. At a…

A: Solution: Given information: n=100 Sample size x= 833 Sample mean μ= 800  Population mean σ= 150…

Q: It is known that the population mean for the verbal section of the SAT is 500 with a standard…

A: From the provided information, Sample size (n) = 400 Sample mean (x̅) = 511 Population standard…

Q: Which type of confidence interval should you use in this situation? A sample of 6 adult elephants…

A: It is given that Mean = 12200Sample std. deviation = 200Sample size = 6Confidence level = 95%

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

A:

Q: Suppose that you will be taking a random sample from a population and that you intend to find a 95%…

A: If the sample size increases, then the standard error of statistic decreases. The margin of error is…

Q: Females a.Give 95% Confidence Interval (CI) for the mean males grades? b.Give 95% CI for the…

A: It is given asFor part (a):Sample mean = 7.4Sample variance = 3.3Sample std. deviation = 1.342Sample…

Q: ious example, you learned about a random sample of 60 Redeye Piranha. From that sample, a 99%…

A: a). We know that the formula of confidence interval of mean is as follows: CI=x¯±zsn, where x=sample…

Q: If the number of smokers in a sample of 160 students selected from university A is 56 and the number…

A: From the provided information,

Q: a sample of 25 automobiles shows that the mean price was $20,500 with standard deviation of $2,500.…

A: Givensample size = n = 25Mean price = $20,500Standard deviation = $2500 The distribution is normal.…

Q: A random sample of high school students

A: Here it is given that, A 99% confidence interval based on this sample is 1.7 hours to 3.1 hours

Q: Suppose the standard deviation of the losses had been $3600 instead of $1800. What would the larger…

A:

Q: A researcher surveys a group of college students to determine the negative life events that they…

A: The given values are

Q: A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol…

A: Mean difference (M) = 15.91 mg/dL Standard deviation of the mean difference (s) = 15.2714 mg/dL…

Q: If we want to provide a 95% confidence interval for the mean of a population, the Z value is, .95…

A: Given that  95% confidence interval

Q: You are comparing men and women on hours spent watching TV. You pick a sample of 12 men and 14 women…

A: