PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

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PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review

Transcript of PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

Page 1: PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

PROBABILITY & STATISTICSSECTIONS 5 .1 – 5 .3

Normal Distributions Review

Page 2: PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

For the normal curve, find the z-score that corresponds to the third quartile.

.67

Page 3: PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

According to the Emperical Rule, in the bell-shaped distribution, what percent of the data is within one standard deviation of the mean? 68

Page 4: PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

Find the area of the shaded region under the standard normal curve if z = -1.2

.1151

z

Page 5: PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

Find the area of the shaded region under the standard normal curve if z = 1.75

.0401

Page 6: PROBABILITY & STATISTICS SECTIONS 5.1 – 5.3 Normal Distributions Review.

Scores for a civil service exam are normally distributed, with a mean of 75 and a standard deviation of 6.5. To be eligible for employment, you must score in the top 5%. What is the lowest score you can earn and still be eligible for employment?

(round answer to nearest hundredth)85.69