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Find the z-scores that separate the middle

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Reference no: EM131416901

1) Find the area under the normal curve to the left of z=-2 plus the area under the normal curve to the right of z=2.

2) Find the area under the normal curve to the left of z= -2 plus the area under the normal curve to the right of z=2.

3) Find the z-scores that separate the middle 69% of the distribution from the area in the tails of the standard normal distribution.

4) Assume that the random variable X is normally distributed, μ=42 and standard deviation σ=7.

5) Assume the random variable X is normally distributed, with mean μ=41 and standard deviation =9 Find the 10th percentile.

Reference no: EM131416901

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