INSTRUCTIONS: Refer to the standard normal table on the ...



QUIZ 6

Stat 101

Quiz 6 Fall 2002

Course Component Value: [6] Name: __________________________

INSTRUCTIONS: Refer to the standard normal table on the reverse as needed. Remember, drawing curves may aid in identifying what it is you are looking for.

z = x - μ

σ

1) [2] What is the area to the left of a z score of –2.87? __________

2) [1] What is the z score associated with a table area of .4500? __________

3) [1] What would be the z score to the right of which .0029 of the area under the curve lies? __________

4) Assume women’s weights are normally distributed with mean μ = 143 lb and standard deviation σ = 29 lb. Find the probability that a single, randomly selected woman’s weight would fall within the indicated range. NOTE: There are TWO parts to this question.

FIND: P(143 lb < x < 172 lb)

a) [1] DRAW a normal curve, label it, and shade the area corresponding to the probability being sought.

b) [1] FIND the probability.

f:Quiz 6 f2002.doc

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download