Answer:
P [ X < 67 ] = 0,66,81 or 66,81 %
Step-by-step explanation:
We assume Normal Distribution N ( μ ; σ ) N ( 76 ; 6 )
z score for 67 is :
z(s) = ( X - μ ) /σ
z(s) = ( 67 - 76 ) / 6
z(s) = - 9 / 6
z(s) = - 1,5
with 1,5 we fnd n z-table area undr the curve α = 0,6681
Then P [ X < 67 ] = 0,66,81 or 66,81 %
Answer:
There are 552 students
Step-by-step explanation: 600*0.08=48, 600-48=552
Using the Poisson distribution to determine the probability that a page contains exactly 2 errors is 0.0163
<h3><u>Solution:</u></h3>
Given that, a book contains 400 pages.
There are 80 typing errors randomly distributed throughout the book,
We have to use the Poisson distribution to determine the probability that a page contains exactly 2 errors.
<em><u>The Poisson distribution formula is given as:</u></em>
Where, is event rate of distribution. For observing k events.
And, k = 2 errors.
Hence, the probability is 0.0163
Answer: 2.4 * 10^1
Step-by-step explanation:
Divide the two numbers. 4.8 * 10^3 = 4800
4800/200 = 24
Put into scientific notation
24 = 2.4 * 10^1
4.8 * 10^3 is 24 (2.4*10^1) times greater than 200