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Refer to the accompanying data display that results from a simple random sample of times (minutes) between eruptions of the Old Faithful geyser. The confidence

Refer to the accompanying data display that results from a simple random sample of times (minutes) between eruptions of the Old Faithful geyser. The confidence level of 95% was used. Complete parts (a) and (b) below.

TInterval

(85.74,91.76)

x=88.75

Sx=8.897431411

n=36

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Part 1

a. Express the confidence interval in the format that uses the "less than" symbol. Round the confidence interval limits given that the original times are all rounded to one decimal place.

enter your response here

min<

min

(Round to two decimal places as needed.)

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