1. A Gallup poll on energy use randomly selected 520 adults and asked if they favoured“increasing the use of nuclear power as a major source of energy”. The poll reported that 224 adults said “Yes”. Does this poll give good evidence that more than 39% of all adults are in favour of the increased use of nuclear power? a) Write down the null and alternative hypotheses. b) Check the necessary assumptions for carrying out the hypothesis testing. c) Compute the observed test statistic. d) Find the corresponding P-value. e) Based on the P-value in (d) and α = 0.03, what are the decision and final conclusion?

Q: In testing hypotheses, if the consequences of rejecting the null hypothesis are very serious, we…

A: Null hypo. proposes that there is no difference in a set of given values.

Q: If Lynell requires her results to be statistically significant at level a = 0.05, choose the correct…

A: The given p-value is 0.0174 and significance level is 0.05.

Q: In a clinical study of an allergy drug, 108 of 200 randomly select subjects reported experiencing…

A: In a clinical study of an allergy drug, 108 of 200 randomly select subjects reported experiencing…

Q: Conduct the appropriate hypothesis test and compute the test statistic. Previous data suggests that…

A: WW have given that  Sample size n= 25  Sample mean = 51 Sample standard deviation = 5

Q: Classify the conclusion of the hypothesis test as a Type I error, a Type II error, or a correct…

A: Answer is  correct decision

Q: Use the following scenario to conduct a hypothesis test.  You will again go through the different…

A: Given: p = 0.58 x = 364 n = 682 α = 0.05

Q: A researcher posted that based on a random sample they found statistically significant evidence that…

A: Given Information: Here, researcher wants to determine whether the proportion of people who are able…

Q: Most pregnancies are full term, but some are preterm (less than 37 weeks). Of those that are…

A: From given data we have : Observed Frequencies   under 20 B1 20 to 29 B2 30 to 39 B3 40 or Over…

Q: According to the 2010 Census, 16% of people in the United States are of Hispanic or Latino origin.…

A: a. Let p be the population proportion of Hispanic people than the nation as a whole and questions…

Q: What are the null and alternative​ hypotheses? A. H0​: BMD is dependent upon depression in elderly…

A: Given: Significance level α = 0.01 Formula Used: Test-statistic χ2 = ∑(O-E)2E

Q: 16% of all college students volunteer their time. Is the percentage of college students who are v…

A: The claim is that the % of college students who are volunteers larger for students receiving…

Q: According to a recent report, 45% of college student internships are unpaid. A recent survey of 120…

A: Given that  The population proportion of college student internships are unpaid (p)=0.45 Let X…

Q: According to the Centers of Disease Control, about 9% of Americans between the ages of 12 and 19…

A: p = 9% = 0.09 According to the Centers of Disease Control, about 9% of American young people between…

Q: A) A student believes that the average grade on the final examination in statistics is at least 85.…

A:

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: According to the provided information, the claim is “Most of adults would erase all of their…

Q: D) very

A: Pessimistic - it is a negative mental attitude of a person.

Q: According to the Centers for Disease Control and Prevention, 9.7% of high school students currently…

A:

Q: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using…

A: Note: "Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: According to a recent​ report, 45​% of college student internships are unpaid. A recent survey of 80…

A: a. Part 1: Suppose π as the true proportion of college interns that had unpaid internships.

Q: According to the Centers for Disease Control and Prevention, 10.3% of high school students currently…

A:

Q: 2. In 2013, according to the American Dental Association, 50% of adults floss their teeth daily.…

A:

Q: The CEO of a large computer company claims that 80 percent of his customers are "very satisfied"…

A: Formula used: the population proportion p  p = x/n

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: b. Identify the test statistic  c. The P-value for this hypothesis test is d. Identify the…

A: From given data we have : x=488 n=488+399=887

Q: 3. Do the following for the case below. a. State the null and alternative hypotheses for a…

A: A hypothesis is an assumption that can be tested to see if it is true or not.

Q: In a recent poll, 1051 randomly selected adults were asked whether they approve of labor unions; 64%…

A: We have given thatSample size (n) = 1051sample proportion (p̂) = 0.64Significance level (α ) = 0.05

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A:

Q: A 2020 poll in the Bahamas surveyed 2,400 people about taxing sweetened beverages. The results are…

A: A 2020 poll in the Bahamas surveyed 2,400 people about taxing sweetened beverages.They want to test…

Q: A computer manufacturer believes that the proportion of hardware malfunctions is different in humid…

A: From the provided information,

Q: Researchers studied the bone mineral density (BMD) and depression of men aged 65 to 92 years. At the…

A: Chi-square distribution: A probability density function that, among other things, has the property…

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A: The question is about hypo. testing Given : Randomly selected no. of potential voters  ( n ) = 69…

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A:

Q: According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone…

A: In a research study, 33% of American adults had a smartphone. The number of community college…

Q: A genetic experiment involving peas yielded one sample of offspring consisting of 442 green peas and…

A: Given X=149 n=442+149=591

Q: Only 12% of registered voters voted in the last election. Will voter participation decline for the…

A: (a) For this study, we would use one sample z-proportion test. (b)

Q: The​ P-value for this hypothesis test is C) Identify the conclusion for this hypothesis tes

A: The null and alternative hypotheses are: Ho: p = 0.80Ho:p=0.80 Ha: p =\not 0.80Ha:p≠​0.80 This…

Q: In 1948, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: State the hypotheses.   Obtain the value of the test statistic. The value of test statistic is…

Q: Find the P -value for the indicated hypothesis test.  A medical school claims that more than 28% of…

A: When the value of sample size is 30 or more we say that it is a large sample. in the large sample,…

Q: A survey of 97 random homeowners in my neighborhood had a mean of $720 spent on lawn care. Construct…

A:

Q: 1.In a particular year, 68% of online courses taught at a system of community colleges were taught…

A:

Q: A Gallup Poll in November of 2008 showed that 22% of men (110 out of 500) said they were seriously…

A:

Q: Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results…

A:

Q: According to a recent report, 45% of college student internships are unpaid. A recent survey of 100…

A: As per Bartleby guideline expert have to answer first question only..

Q: Suppose that you want to perform a hypothesis test for a population mean, μ. a. Express the null…

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.