Solution to suppose the weight of 800 students are normally distributed with mean 75kg and standard deviation … - Sikademy
Author Image

Archangel Macsika

suppose the weight of 800 students are normally distributed with mean 75kg and standard deviation 5kg. find the numer of students that weigh more than 80kg

The Answer to the Question
is below this banner.

Can't find a solution anywhere?

NEED A FAST ANSWER TO ANY QUESTION OR ASSIGNMENT?

Get the Answers Now!

You will get a detailed answer to your question or assignment in the shortest time possible.

Here's the Solution to this Question

Let X= the student's weight: X\sim N(\mu, \sigma^2).

Given \mu=75\ kg, \sigma=5\ kg.


P(X>80)=1-P(X\leq 80)

=1-P(Z\leq\dfrac{80-75}{5} )=1-P(Z\leq 1)

\approx0.158655


800(0.158655)=127

127 students weigh more than 80kg.


Related Answers

Was this answer helpful?

Join our Community to stay in the know

Get updates for similar and other helpful Answers

Question ID: mtid-4-stid-46-sqid-2557-qpid-1027