Question

A normal distribution has M =15 AND STANDARD DEVIATION= 5 , then what percentage of students will be between 10-20…?

Answer 1

Answer:

0.6827 (approx)

Step-by-step explanation:

P(10<X<20) = p(-1<Z<1)

Using the normal distribution table find value of Z at 1 and then multiply it by 2. As the of P(0<Z<1) will be the same as P(-1<Z<0). At Z = 1.00 the value is 0.3413.