Math 2275 - Spring 2021
ents
Azelea Garcia a
5
Homework: Ch 7 Technology Demo
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7.2.40-T
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A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 149.5 seconds. Assuming drive-through times are normally distributed with a
standard deviation of 26 seconds, complete parts (a) through (d) below.
(a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 115 seconds?
The probability that a randomly selected car will get through the restaurant's drive-through in less than 115 seconds is 1
(Round to four decimal places as needed.)
Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.
Determine if the situation below is a safe practice: julia needs to hang some industrial shelving, so she carefully selects the correct drill bits for the electrical drill before attempting to screw the shelves into the wall.