statistics

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A sample of 200 students in a English class were asked- How long did you sleep last night?
sample mean: 6.4 hours
S.D. = 1.6 HOURS
Standard Error = .11 hours
sample size = 200

What type of data is used in this example?

my answer: MEASUREMENT DATA

What would happen to the size of the Margin of error or confidence interval if the level of confidence were instead 68% and why?

My answer: the Margin of error would decrease because the level of confidence increased????

  • statistics -

    You used measures of central tendency and variability.

    What was it before it was 68%? If the confidence interval increased, then your answer would be right.

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