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?

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Q: the claim of health officer true

A: Given; n=100, x=70 , P0=60% and α=0.01 To test: H0: The researcher concludes completed polio vaccine…

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

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A: Z test for one proportion

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A:

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

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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.

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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…

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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

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A:

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…

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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…

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

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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…

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

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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