SophiaPretty

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About SophiaPretty

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Elementary,Middle School,High School,College,University,PHD

Expertise:
Accounting,Algebra See all
Accounting,Algebra,Applied Sciences,Architecture and Design,Art & Design,Biology,Business & Finance,Calculus,Chemistry,Communications,Computer Science,Economics,Engineering,English,Environmental science,Essay writing Hide all
Teaching Since: Jul 2017
Last Sign in: 304 Weeks Ago, 2 Days Ago
Questions Answered: 15833
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  • MBA,PHD, Juris Doctor
    Strayer,Devery,Harvard University
    Mar-1995 - Mar-2002

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  • Manager Planning
    WalMart
    Mar-2001 - Feb-2009

Category > Math Posted 24 Aug 2017 My Price 10.00

As reported by a recentsurvey, thefast-food restaurant

As reported by a recentsurvey, thefast-food restaurant with the bestdrive-through time had a mean time spent in thedrive-through of mu equals 63.8μ=63.8

seconds. Assuming drive-through times are normally distributed with σ=2.9 seconds.

 

What is the probability that a randomly selected car will get through the drive-through in less than 60.1 
seconds?

 

The lengths of a particularanimal's pregnancies are approximately normallydistributed, with mean μ=268 days and standard deviation σ=20 days.
(a) What proportion of pregnancies lasts more than 283 days?
(b) What proportion of pregnancies lasts between 238 and 278 days?
(c) What is the probability that a randomly selected pregnancy lasts no more than 263 days?
(d) A"very preterm" baby is one whose gestation period is less than 223 days. Are very preterm babiesunusual?

 

Answers

SophiaPretty
(5)
Status NEW Posted 24 Aug 2017 04:08 PM My Price 10.00

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