Based on information from a previous study, r1 = 39 people out of a random sample of n1 = 105 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 105 adult Americans who did attend college, r2 = 50 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend college? Use ? = 0.01. What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.) (c) Find (or estimate) the P-value. (Round your answer to four decimal places.)

Q: Researchers wondered if there was a difference between males and females in regard to some common…

A: Given Data n1 = 522 x1 = 202 n2 = 505 x2 = 171

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A: Solution: Given information: n= 150 Sample size of articles  x= 70 articles have US authors…

Q: The National Academy of Science reported that 38% of research in mathematics is published by US…

A: Solution: Given data p = 0.38 Sample size( n) = 279 x = 123 Level Of significance = 0.02 To Test the…

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A: Given that 182 males responded 'yes' among the 538 males and 209 females responded 'yes' among the…

Q: In a previous poll, 38% of adults with children under the age of 18 reported that their family ate…

A: The test statistic is -1.36 and the P-value is 0.088.

Q: In a previous poll, 38% of adults with children under the age of 18 reported that their family ate…

A: Population proportion, p = 0.38Sample size, n = 1186Number of successes, x = 428Significance…

Q: The National Academy of Science reported that 36% of research in mathematics is published by US…

A: Given p=36%, n=278,  X=85  Level of significance ɑ=0.02

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A:

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A: We have 2015 as Population 1 and 2005 as Population 2. Then p1=Population proportion of Population…

Q: In a previous poll, 31% of adults with children under the age of 18 reported that their family ate…

A: Population proportion, p = 0.31Sample size, n = 1199Number of successes, x = 350Significance level,

Q: The National Academy of Science reported that 33% of research in mathematics is published by US…

A: sample size(n)=280No.of articles have US authors(x)=108significance level(α)=0.01

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A: If the sample of proportion is tested then the z test is used. It can be tested for one sample and…

Q: The National Academy of Science reported in a 1997 study that 40% of research in mathematics is…

A: Given: Sample size, x = 62 Population size, n=130 Level of significance = 0.10 Population…

Q: In a previous poll, 41% of adults with children under the age of 18 reported that their family ate…

A: Solution-: Given: x=429,n=1105,P0=0.41,α=0.05 Is there sufficient evidence that the proportion of…

Q: The National Academy of Science reported that 31% of research in mathematics is published by US…

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A:

Q: Which is the correct alternative hypothesis based on this research question: Is there a difference…

A: Let, u1 is the mean of first population(MEN BMI) and u2 the mean of the second(WOMEN BMI)     Null…

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A: Given,To find the type of test, standard error, and calculate the z value.

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Q: The z-statistic for this hypothesis test was z = –2.95. Based on this z-statistic, what is the…

A: Given that Test statistic=z=-2.95 H0 : p1 = p2 Vs H1 : p1 ≠ p2

Q: The National Academy of Science reported that 37% of research in mathematics is published by US…

A:

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Q: Find the test statistic, Zo Zo = (Round to two decimal places as needed.)

A: It is given that 428 of those 1186 adults reported that their family ate dinner together seven…

Q: 1. This is an example of a 2. Find the standard error. 3. Find the z value. 4. Find the p-value.[.…

A: Given,the hypothesis test for one proportion.To answer the 5 sub-parts.

Q: A researcher studied the accuracy of responses on questions involving sensitive material. From…

A: a). Given, n1=39X1=21n2=41X2=23α=1-0.90=0.10 Now, p1=X1n1=2139=0.5385p2=X2n2=2341=0.5609 As per z…

Q: A random sample of n1 = 154 people ages 16 to 19 were taken from the island of Oahu, Hawaii, and 11…

A: The given data is as follows: For island of Oahu, The sample size n1 is 154 and the number of high…

Q: In a previous poll, 43% of adults with children under the age of 18 reported that their family ate…

A: Step 1: Determine the population proportion (p0).In the given scenario:The population proportion is…

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A:

Q: Researchers wish to test whether marijuana use among full-time college students aged 19-22 at a…

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Q: From public records, individuals were identified as having been charged with drunken driving not…

A: Her it is given that , two random samples from this group were studied. In the first sample of 25…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: From the provided information,

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Q: hoyed by people who repeatedly check their mobile phones while having an in-person conversation?"…

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

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Q: The National Academy of Science reported that 37% of research in mathematics is published by US…

A: we have to find test  statistics..

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A: Sample size n=359Favorable cases x=152NOTE: according to bartleby guidelines expert can solve…

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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.