Find the probability that a piece of data picked at random from a normal populat

Question

Find the probability that a piece of data picked at random from a normal population will have a standard score (z) that lies to the left z = 2.20.

Find the probability that a piece of data picked at random from a normal population will have a standard score (z) that lies to the left z = 3.16.

Find the probability that a piece of data picked at random from a normal population will have a standard score (z) that lies to the left z = 1.30.

Find the probability that a piece of data picked at random from a normal population will have a standard score (z) that lies to the left z = 1.10.

Find the probability that a piece of data picked at random from a normal population will have a standard score (z) that lies to the left z = -0.47.

business statistics 1

Explanation / Answer

Answer to the each part of the question is below:

Just as an FYI: I used the Z tables to solve the question. You can use this link to open a Z table:

http://sixsigmastudyguide.com/wp-content/uploads/2014/04/z-table.jpg

P(Z<2.20) = .9861

P(Z<3.16) = .9992

P(Z<1.30) = .9032

P(Z<1.10) = .8643

P(Z<-.47) = .3192

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