q1) The average drive to work is 9.6 miles. Assume the standard deviation is 1.8 miles. If a random sample of 36 employed people who drive to work are selected, find the probability that the mean of the sample miles driven to work is between 9 and 10 miles
q1) The average drive to work is 9.6 miles. Assume the standard deviation is 1.8 miles. If a random sample of 36 employed people who drive to work are selected, find the probability that the mean of the sample miles driven to work is between 9 and 10 miles
q2) Data accumulated by the National Climatic Data Center shows that the average wind speed in miles per hour for St. Louis,Missouri, is 9.7. Suppose wind speed measurements are
Q#3: Find the probabilities for each,using the standard normal distribution
- P(0 <z <95)
- P(−23 <z <0)
- P(z >82)
- P(z < −51)
q4) find the area under the standard normal distribution curve.
- Between z = 0 and z = 07
- To the right of z = 01
- To the left of z = −87
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