A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 of them attended the midnight showing. The Type I error is to conclude that the percent of EVC students who attended is ________. at least 20%, when in fact, it is less than 20

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A: Givensample mean = 95standard deviation = 6.6sample size = 30 With reference to below Z table the Z…

Q: Which of the following is TRUE if you choose a 95% level of confidence?

A: HERE AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION PLZ REPOST FOR REMAING

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A: Here sample size, n= 9 Variability is given by, Var=(summation X^2)/n -{(summationXi)/n}^2

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Q: In order to construct the 95% confidence interval, you choose which formula? O x ±1.645 × OT ±1.96 x…

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A: In the inferential statistic we check biaseness, estimation and parameter.

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A: Note- As per our policy we can answer only 1st question. If you want solutions for other, then you…

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Q: = 360 and p = 0.09, find the margin of error at a 99% confidence level

A:

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A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

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Q: 1(b). At 99% confidence, what is the margin of error?

A: here use given data table

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A: The Null hypothesis is  Ho: μ=10

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A: Given, The sample proportion is,