Ask
Login
1
46kviews
In a distribution exactly normal 7% of items are under 35 and 89% of the items are under 63. Find the probability that an item selected at random lies between 45 & 56.
written 7.9 years ago by gravatar for teamques10 teamques10 ★ 65k modified 17 months ago by gravatar for sagarkolekar sagarkolekar ★ 11k
engineering mathematics
ADD COMMENT EDIT
1 Answer
2
2.6kviews
written 7.9 years ago by gravatar for teamques10 teamques10 ★ 65k

Let the mean and standard deviation be $‘m’$ and $'\sigma'$

Let SNV corresponding to $x = 35$ be $z_1$

$$P (x \lt 35) = 35\% $$

$ P (z \lt Z_1) = 0.07 \\ 0.5 – \text { Area between } ‘z = 0’ \space \space to\space \space ‘z = …

Create a free account to keep reading this post.

and 4 others joined a min ago.

ADD COMMENT EDIT
Please log in to add an answer.