True or False  1. Keeping other factors constant, the 99% CI has a broader range than the 95% CI. 2. The null hypothesis is the opposite of the alternative hypothesis 3. The alternative hypothesis is the same as the researcher's research hypothesis. 4. If researchers reject a hypothesis test at 0.01 level, they will also reject the hypothesis at 0.05 level.

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A: Given information Hypothesized mean µ = 4 Sample size (n) = 84 Mean x̅ = 3.85 Standard deviation (s)…

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A: Hi, you've posted multiple subparts and as per our policy, we'll solve the first three. Given:

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Q: I hope you will answer this thank you!

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Q: Hypothesis Testing for Two Proportions Preform a hypothesis test on a separate sheet of paper Nathan…

A: According to our guidelines, we have to sove only first problem.

Q: Many people believe that the average number of Facebook friends is 140. The population standard…

A: Given : μ=140n=39x=152s=37.9We want to find Null hypothesis H0 and alternative hypothesis H1.

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A:

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A: Givenpopulation proportion(p)=0.86Margin of error(E)=3%=0.03confidence level=99%

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A: For part (a), the objective is to estimate the "population proportion of residents that prefers a…

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

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A: Sample size

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A: Answers are   x-bar = 22.75…

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A:

Q: In a two-sided hypothesis test comparing the proportion of young adults wito have a tablet compared…

A: we have given that  two sided hypothesis test. and the standized statistic (z) =1.85

Q: Cigarette Smoking A researcher found that a cigarette smoker smokes on average 31 cigarettes a day.…

A: μ=31,n=8,X¯=28,s=2.9,α=0.01

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A: here given ,  p- value is Between 0.01 and 0.05  significance level = alpha = 0.05

Q: A doctor claims that less than 30 percent of individuals who are exposed to a certain amount of…

A: A doctor claims that less than 30 percent of individuals who are exposed to a certain amount of…

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A: given data sampple size (n) = 16sample mean ( x¯ ) =42sample standard deviation (s) = 7claim : μ<…