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
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