Find the z-scores corresponding to the given areas under the standard normal distribution “bell curve”.
) The area to the left of z is 15%
) The area to the right of z is 65%.
) The area to the left of z is 10%.
) The area to the right of z is 5%.
) The area between -z and z is 95%. (Hint draw a picture and figure out the area to the left of the -z)
) The area between -z and z is 99%.
Remember, z is distributed as the standard normal distribution with mean μ = 0 and standard deviation σ = 1
For parts (a) through (d): Enter answers in decimal form rounded to nearest thousandth (3 places after decimal). Be sure to include sign! Examples of correctly entered answers:
0.000 -0.003 +0.070 +0.100 -0.395 +1.000
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