Maurice Tutor

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About Maurice Tutor

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

Expertise:
Algebra,Applied Sciences See all
Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 408 Weeks Ago, 1 Day Ago
Questions Answered: 66690
Tutorials Posted: 66688

Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 20 Jan 2018 My Price 5.00

large population of students

8.16.      A certain type of electric light bulb has  a  mean  lifetime  of  1500 h  and  a  standard  deviation of 150 h. Three bulbs are connected so that when  one burns  out,  another  will  go  on. Assuming that the lifetimes are normally distributed, what is the probability that lighting will  take place  for (a) at least 5000 h and (b) at most 4200 h?

 

 

8.17.      The standard deviation of the weights of a very large population of students is 10.0 pounds (lb). Samples of 200 students each are d rawn from this population, and the standard deviations of the heights in each sample are computed. Find (a) the mean and (b) the standard deviation of the sampling distribution of standard deviations.

 

 

Answers

Maurice Tutor
(5)
Status NEW Posted 20 Jan 2018 11:01 PM My Price 5.00

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