A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 9.5. You believe that average may be different in Hartsville. State the null and alternative hypothesis for the claim that the average number of screens per household in Hartsville is not 9.5. Select your answer from one of the following options. a. ?0:?≥9.5??:?<9.5 b. ?0:?=9.5??:?≠9.5 c. ?0:?>9.5??:?≤9.5 d. ?0:?≠9.5??:?=9.5 e. ?0:?≤9.5??:?>9.5

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A: From the provided information, Population proportion (p) = 0.28 a) The hypotheses can be constructed…

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A: let us first understand what is type I error and type II error: type I error is the rejecting null…

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A: Given: Sample size of data is n=600. 80% percentage of the healthy children should be required to be…

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Q: State the null and alternative hypotheses for each of the following situations. (That is, identify…

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Q: statistics

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Q: Write a null and alternative hypothesis for the following: 1.Is there a relationship between the…

A: Solution 1. The correlation coefficient between final rating given by the customer and the number of…

Q: According to the American Automobile Association, 31 million Americans travel over the Thanksgiving…

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

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Q: A researcher rejected the null where r(146) = .148, p = .03 and concluded that the effect size was

A: Reviewing information, Given that, r=0.148p=0.03

Q: Identify the type of hypothesis test below.H0:X≤16.9, Ha:X&gt;16.9

A: Solution:From the given information, the null and alternative hypothesis are given below:Null…

Q: At one school, the average amount of time that tenth-graders spend watching television each week is…

A: From the provided information, The average amount of time that tenth-graders spend watching…

Q: A drug company creates a medicine designed to prevent colds, and states that it is equally effective…

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Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

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Q: State the null and alternative hypotheses for the following statement and the type of test being…

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Q: How would a person set up the hypotheses if they wanted to test the claim: the mean length of a…

A: Given: The claim is: The mean length of a Pyramid Lake trout is greater than 21 inches. The…

Q: Students at Dover Community College have a mean credit card debt of $1,600 with a median of $1,300.…

A: Given information: Students at Dover Community College have a mean credit card debt of $1,600 with a…

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Q: A formal hypothesis test is to be conducted using the claim that the mean body temperature is equal…

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Q: Maria has two routes, E and W, she can take when commuting to work. Both routes go through a…

A: Decision rule : Reject H0 if P-value  &lt;  α Here  P-value = 0.37 &gt; 0.1 = α.  Conclusion :…

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A: It is needed to test, whether the average roundtrip airfare between New York and London is less than…

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts(claim,…

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A: Given: p= 0.397

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Q: A medical researcher says that less than 86% of adults in a certain country think that healthy…

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Q: use a hypothesis test to determine if the proportions are statistically different. A recent survey…

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Q: Construct the null and alternative hypothesis in words or sentences a.  Investigate whether there…

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Q: Some people believes that the mean income of Pharmacists is now more than $65 thousand per year.…

A: We know that the Null hypothesis(H0) means no difference i.e. it always comes with an equal sign…

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A: Hypothesized Proportion, p = 0.24 : A research center claims that 24​% of adults in a certain…

Q: A medical researcher says that less than 86% of adults in a certain country think that healthy…

A: Given,sample size(n)=400sample proportion(p^)=0.84α=0.10

Q: medical researcher says that less than 85​% of adults in a certain country think that healthy…

A: Given that  A medical researcher says that less than 85​% of adults in a certain country think that…

Q: A medical researcher says that less than 79% of adults in a certain country think that healthy…

A:

Q: A statistics instructor believes that more than 20% of Evergreen Valley College (EVC) students…

A: Given: n= 84 ,x= 11.0 p= 0.20 Need to find Alternative hypothesis condition??

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Q: A medical researcher says that less than 85​% of adults in a certain country think that healthy…

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Q: A medical researcher says that less than 81% of adults in a certain country think that healthy…

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.