A candidate in a local election thinks seniors are by far her best supporters. She believes that the difference in the support between seniors and non-seniors is more than 15%. In order to verify this belief, her supporting team sampled 100 seniors and 150 non-seniors to find what proportion of each group supports the candidate. It is found that 50 of the seniors support her and 36 of the non-seniors support her.   a. Specify the competing hypotheses to determine if the difference in the support between seniors and non-seniors is more than 15%! b. Calculate the value of the test statistic and make a conclusion at the 5% significance level. c. Determine the p-value, and can you have the same conclusion with (b)!

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A: Using z test for one proportion

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A: your question order are wrong so i gives answers in orders

Q: A nutritionist believes that 10% of teenagers eat cereal for breakfast. To investigate this claim,…

A: Suppose that p is the population proportion of teenagers, who eat cereal for breakfast.

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Q: A poll of 1144 Americans showed that 47.2% of the respondents prefer to watch the news rather than…

A: (a) That is, there is no evidence to conclude that the population proportion of all Americans who…

Q: A study reports that 75 percent of young adults in a county get their news from online sources. A…

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Q: a population of fish, approximately 47% are female. A test is conducted to see if, in fact, the…

A: A null hypothesis is a type of hypothesis which is used in statistics. It states that there is no…

Q: O224 O 124 O238 176

A: GIVEN DATA, p=0.169CI=0.90α=1-0.90=0.10E=0.04

Q: In 1942, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A:

Q: Sixty-eight people from a random sample of 128 residents of Uppsala, Sweden, had blue eyes.  45…

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Q: State the type of error (Type I or II) that has been made for the following claims. A. Claim: More…

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Q: Males and females were asked what they would do if they received a $100 bill in the mail that was…

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Q: A politician believes that 60% of constituents are in favor of a particular issue. She takes a…

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Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

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Q: In 2002, the General Social Survey conducted by StatsSA, participants was asked the following…

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Q: A psychologist would like to examine the effects of different testing methods on the final…

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Q: The Global Business Travel Association reported the domestic airfare (in dollars) for business…

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Q: An airline claims that luggage is rarely lost (does not arrive at the destination at the same time…

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Q: Determine the null and alternative hypotheses. Ho: P1 H₁: P₁ Find the test statistic for this…

A:

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

A: From the provided information,

Q: The American Library Association claims that at most 67% of library patrons actually borrow books.…

A:

Q: A research group conducted an extensive survey of 3112 wage and salaried workers on issues ranging…

A:

Q: The College Board reported that 58.7% of all students who took the 2010 AP Statistics exam earned…

A: Given,n=54x=34P^=xn=3454=0.6296H0:P=0.587H1:P>0.587α=0.05

Q: Shoppers were asked about their regular grocery shopping locations. The table below shows the…

A: Given,

Q: Win Loss Suit 22 28 T-Shirt 28 22 O A. The proportions of wins is different for teams wearing suits…

A: The proportion of wins wearing suit = 22/50 The proportion of wins wearing t-shirt= 28/50

Q: returned within 24 hours. The Sample proportion p-hat is 99/125 = 0.792. The watchdog group wants…

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Q: Use the Kruskal-Wallis test to determine whether there is a significant difference among the three…

A: Program A B C 510 450 600 400 510 620 490 400 580 520 430 490 490 480 590 630 360 640…

Q: 3. A claim is made that the proportion of college students who have Netflix accounts is 0.85. Noah…

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Q: A publisher reports that 67% of their readers own a particular make of car. A marketing executive…

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Q: Determine the probabilities of each sample proportion. Sample proportion of girls ▼ ▼ Probability D…

A:

Q: A local school board wants to estimate the difference in the proportion of households with…

A: Given that  Sample sizes n1=40  , n2=45 Favorable cases x1=40 , x2=25

Q: b. The null and alternative hypotheses would be: Ho: Select an answer (please enter a decimal) H: (?…

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Q: An airline claims that luggage is rarely lost (does not arrive at the destination at the same time…

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Q: i). Write the null and alternative hypotheses.

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Q: A tourist wants to make a trip to a small city and visit the crowded shopping center. The city's…

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Q: a. Let p denote the population proportion of correct hand selections by touch therapists. Identify…

A: a) - Let p = proportion that touch therapists uses a random guess method. Here, random guess means;…

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.