You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly smaller than 59% at a level of significance of α= 0.01. According to your sample, 36 out of 71 potential voters prefer the Democratic candidate. The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)

Q: The proportion of individuals in the United States who reported being “very happy” in 2014 was…

A:

Q: Imagine a researcher wants to determine whether parents differ from each other in their fondness for…

A: Explanation:   It is given that research asks each parent of 50 couples, It means, there are 50…

Q: Levi-Strauss Co manufactures clothing. The quality control department measures weekly values of…

A: Given the data of weekly values of different suppliers for the percentage difference of waste…

Q: Back in April and May of 1985, the Gallup organization conducted a poll to estimate the   percentage…

A:

Q: Study 1 Seventy five students volunteered to participate in a study comparing the effects Rockstar…

A: The main distinction between well-conducted observational studies and experimental designs is that…

Q: Justin got a score of 85 on an GE MMW examination for which the mean is 75. Justin realized that the…

A: Considering the mean score in the specified examination as μ and variance of scores in the…

Q: To test the effect of a new diet on weight loss, a cardiologist has all his patients follow the diet…

A: The valid variable provides the validity of the experiment result. The unknown third variable does…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: Given:Population mean = 145Sample mean = 139Sample standard deviation s = 28.

Q: World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are…

A: Population mean=1148Sample mean=144Standard deviation =25 We have to finda...Null and Alternative…

Q: You are asked to design a study to investigate the effectiveness of the Atkins diet (IV = diet, DV =…

A:

Q: A cell phone manufacturer tests the battery lifetimes of its cell phones by recording the time it…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: A research study examined the effects of a new drug versus an old drug on hypertension. There were…

A: The objective of this question is to determine if there is a significant difference in the…

Q: Sarah's score on the second exam was 34 for which the mean of all scores was 28 and the standard…

A:

Q: Let’s say there is a psychologist who is investigating cultural differences in emotional expression…

A: A null hypothesis is the statement to be tested in the hypothesis testing.

Q: Two classes write the same test. Class 1 (n=32) has a mean number of points of 720 (M=720, s=20) and…

A: We have given two classes write the same test.For class 1-Sample size n1 = 32Mean M1 = 720Sample…

Q: Running heart rate - Jose is a physician who is researching to what extent running affects heart…

A:

Q: Imagine a researcher wants to determine whether the participants in his sample are skewed toward…

A: Introduction: When the mean of one group is to be compared to a fixed value, or the means of two…

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

A: State the hypotheses. That is, there is no evidence that population proportion of driver fatalities…

Q: Can you conclude that the proportion of boys who are overweight differs from the proportion of girls…

A: Here use  proportion test for 2 sample

Q: Cindy, a financial analyst is studying the relationship between family decisions to borrow money to…

A: Given   Expected income More likely Less likely Did not make a difference Did not consider it…

Q: The sample data here is the cholesterol levels for 10 men diagnosed with high cholesterol. The first…

A: Result Option 3 is correct. The mean cholesterol level of males who take the medicine is lower than…

Q: A paper describes an investigation in which 40 men and 40 women with online dating profiles agreed…

A: Given Data: x¯m=0.53            sm=0.81              nm=40x¯f=0.08              sf=0.75…

Q: Nabisco claims that Chip Ahoy Cookies have an x ̅=28.67 chocolate chips per cookie with a SD=2.67.…

A: We have to find pvalue...

Q: What does a z-score of 3 for a data value x represent? What does a x score of -1 for a data value x…

A: We have to interpret z scores.

Q: The average home in the US is expected to cost $240,000. A random sample of 56 homes sold this month…

A: From the provided information, Sample size (n) = 56 The hypotheses can be constructed as: H0: µ =…

Q: A random sample of 600 people from a certain district were questioned and the results indicated that…

A:

Q: A psychologist would like to examine the effects of caffeine consumption on the activity level of…

A: The F - score formula in the ANOVA test is given by            F-score=SSbetweenK-1SSerrorN-K Where,…

Q: Mean Standard Deviation Sample Size Standard care New treatment 0.57 0.26 56 0.69 0.27 56

A: State the hypotheses. That is, there is no statistical evidence that the new treatment results in a…

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.