Between 27 April 2020 and 10 May 2020, Gallup surveyed a random sample of 7,962 U.S. adults regarding their well-being.  Of those surveyed, 47.05% reported worrying “during a lot of the day yesterday”.  Use this information to respond to the following midterm exam questions: Using the quick method, what is the margin of error for this poll?  Express your answer as a percent rounded to the nearest hundredth.  What is the 95% confidence interval for the proportion of US adults who worried “during a lot of the day yesterday”?

Q: According to past reports 51% of employees own a car. In a random sample of 106 employees, how many…

A: Total no.of employees(n)= 106 The percentage of employees own a car(p)= 0.51

Q: If you want a poll to have a margin of error of 2.84%, how large will your sample have to be?

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A: sample size(n)=218No. vehicles were not covered by insurance(x)=33

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A: We have to find sample proportion.

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A: The attributable risk percent among the exposed is given as: Risk percentage among exposed=Number of…

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A: Given X=300 n=1815

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A: The miss rate will be 2.5%

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A: It is given that margin of error (E) is 0.05 and the confidence level is 0.95.

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A: The study is an effect of one factor on the mean of a response variable.

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A: Hypothesis Testing

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A: Given that - A poll in Canada states that 67% of all respondents favor imposing the death penalty.…

Q: When asked what they consider to be the best birthday present, 64% of a random sample of  800 adults…

A: The Margin of Eroor (MOE) = z * √p * (1 - p) / √nWhere: z = 1.96 for a confidence level (α) of 95%,…

Q: A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey…

A:

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A:

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A: Given that,   The sample proportion is,

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A:

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A:

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A:

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A: Approximate distribution is normal

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A: given data claim : p >0.5n = 1000x = 540p value = ?

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A: Given: Confidence level = 95% Margin of error = 0.03 Formula Used: n = ZαMargin of error2 p(1-p)

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A:

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A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: As chairperson of the Rogers County Task Force on Aging, you wish to estimate the proportion of…

A: Sample size n =44 Favorable cases x =22 Sample proportion p^=x/n  =22/44 =0.500

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A: From the given information, America OnLine published a survey question. Among the 2,300 Internet…