Answered

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Help me answer this. tell me what number you need me to find on the table.

Help Me Answer This Tell Me What Number You Need Me To Find On The Table class=

Sagot :

Given

a) z = -0.84

b) z=-1.40 and z = 1.03

Find

a) Area under stanfard normal curve to the right of z = -0.84

b) Area under standard normal curve between z=-1.40 and z = 1.03

Explanation

a)

Right of z = -0.84

P(z > -0.84) = P(z < 0.84)

= 0.7995 (From normal table)

b)

P(-1.40 < z < 1.03) = P(z < 1.03) - P(z < -1.40)

= 0.8485 - (1 - 0.9192)

= 0.8485 - 0.0808

= 0.7677

Final Answer

a) 0.7995

b) 0.7677

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