Mathematics, 05.05.2020 15:55, becerrarboyv9mf
In a random sample of 40 people who rode a roller coaster one day, the mean wait time is 52.4 minutes with a standard deviation of 9.5 minutes. In a random sample of 50 people who rode a Ferris wheel the same day, the mean wait time is 14.1 minutes with a standard deviation of 2.3 minutes.
Which interval is the 99% confidence interval for the difference between the mean wait times of everyone who rode both rides?
(35.8, 40.8)
(36.8, 39.8)
(34.3, 42.3)
(36.9, 40.7)
Answers: 1
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Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?
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The graph of y x3 is translated so that the point (1. 1) is moved to (1, 4). what is the equation of the new graph?
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In a random sample of 40 people who rode a roller coaster one day, the mean wait time is 52.4 minute...
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