In recent years, approximately 55% of eligible voters take the time to vote in presidential elections. A poll based on a random sample of 200 eligible voters finds that 128 plan to vote in the next presidential election.    Does this data provide convincing evidence at the ?α = 0.05 level that the proportion of eligible voters who will take time to vote in the next presidential election differs from 0.55?

Q: Is the national crime rate really going down? Some sociologists say yes! They say that the reason…

A: The following information has been provided: Hypothesized Population Proportion (p0)(p_0) =…

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: (a) State the null hypothesis H and the alternative hypothesis H. Ho H :0 (b) Determine the type of…

A: n= 205 Sample proportion = 126/205 = 0.615 Population proportion = 0.7

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A: Introduction :-  Given :-  Surveyed a random sample of 400 11PM news viewers and found that 146…

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A: Given that  A drug company claims that an allergy medication causes headaches in 5% of those who…

Q: in a mid-2017 poll, 65% of u.s. adults believed that the russians meddled in the 2016 us elections.…

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Q: An education researcher claims that at most 3% of working college students are employed as teachers…

A: Solution: From the given information, p-hat=0.04 and n=200. The given claim is that at most 3% of…

Q: In an October 2003 poll conducted by the Gallup organization, 684 of 1006 randomly selected adults…

A: Point estimate:The point estimate of population proportion is sample proportion.

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A: Given Information: Population proportion (p) = 0.44 Sample size (n) = 1360  Sample proportion (px) =…

Q: Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past…

A:

Q: The U.S. Bureau of Labor Statistics reports that 11.6% of U.S. workers belonged to unions in 2020. A…

A: From the given information we find the solution.

Q: According to one survey taken a few years ago, 32% of American households have attempted to reduce…

A: From the provided information, Population proportion (p) = 0.32 Sample size (n) = 80 Out of which…

Q: Alexis surveys a random sample of 80 students at his school and finds that 22 of themusually walk to…

A: We can find the answer as below

Q: a national survey was initiated and intended to capture the prevalence of HIV in the post-HAART…

A: Given: Sample Sizen=1483 Sample Proportionp^=2411483 Thus p^=0.162508 The standard error is given…

Q: In 2022, the CDC reported that 12.5% of U.S. adults currently smoke cigarettes. From the same…

A: The question is about hypothesis testing.Given :Population proportion of adults who currently smokes…

Q: Some years ago, a study by the U.S. Bureau of Justice Statistics concluded that 59% of jail inmates…

A: Step 1: HypothesesState the null and alternative hypotheses. The null hypothesis claims no effects…

Q: After reading an article using research done by the Organization for Economic Co-operation and…

A: The 95% confidence interval for p is (0.25, 0.32).

Q: What is the​ p-value?

A: Here sample size is too large so use z test for proportion

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A: The sample proportion is, The null hypothesis is, The alternative hypothesis is, Significance…

Q: O The standard normal (2) distribution should be used The Student's t distribution should be used…

A:

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: According to one survey taken a few years ago, 32% of American households have attempted to reduce…

A: The single proportion binomial test is used to compare a proportion of responses or values in a…

Q: A research center claims that at least 23% of adults think their taxes will be audited.  A random…

A: Yes, there is a enough evidence to reject the claim Explanation:Step 1 : Formulate the hypothesis…

Q: A study showed that 62% of supermarket shoppers believe supermarket brands to be as good as national…

A: claim is that the percentage of supermarket shoppers who believe that the supermarket ketchup was as…

Q: Approximately 50% of all student loans guaranteed by the government are in default. A random sample…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.50 Alternative hypothesis:…

Q: Statistics Question

A: Steps to draw scatterplot using TI-84 calculator: Enter the data in L1 and L2.

Q: Do Left-Handers Die Earlier? According to a study published in the Journal of the American Public…

A: Observational study: The investigators may simply observe a predefined set of individuals and…

Q: ormation that you are given, what was the sample standard deviation of the number of hours that the…

A: The width of the confidence interval is =, Width = Upper Interval - Lower Interval           =4.75 -…

Q: An antidepressant has historically been known to relieve depression for 80% of patients who use the…

A:

Q: smaller dose of its main, active ingredient. Due to this change, a medical researcher suspects that…

A: Given : n=240 , X=149 , p0=0.65 , α=0.05 We want test the claim that the proportion of people who…

Q: The General Social Survey (GSS) asked this question: “Have you attended religious services in the…

A: This question seeks to investigate the relationship between the highest degree attained and…

Q: Based on information from a previous study, r1 = 34 people out of a random sample of n1 = 105 adult…

A: Given  r1=34, n1=105, r2=50, n2=105  p1^=r1/n1  p2^=r2/n2