Question 1 Provide an appropriate response.
Use a standard normal table to find the z–score that corresponds to the cumulative area of 0.7019.

Question 2  Provide an appropriate response   Find the z–score that has 84.85% of the distribution’s area to its right.

Question 3  Provide an appropriate response Find the z–scores for which 90% of the distribution’s area lies between –z and z.

Question 4  Provide an appropriate response.Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 100 women are randomly selected, find the probability that they have a mean height greater than 63.0 inches.

Question 5 Provide an appropriate response.
Assume that blood pressure readings are normally distributed with a mean of 115 and a standard deviation of 8. If 100 people are randomly selected, find the probability that their mean blood pressure will be less than 117.

Question 6  Provide an appropriate response.
Find the z–score that corresponds to the given area under the standard normal curve.

Question 7  Provide an appropriate response.The scores on a mathematics exam have a mean of 70 and a standard deviation of 5. Find the x–value that corresponds to the z–score 2.33.

Question 1  Provide an appropriate response.
For the standard normal curve, find the z–score that corresponds to the 90^th percentile.

Question 2  Provide an appropriate response.
Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $37,000 and a standard deviation of $5000. What is the cutoff salary for teachers in the bottom 10%?

Question 3  Provide an appropriate response.Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $29,000 and a standard deviation of $2000. What is the cutoff salary for teachers in the top 10%?

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Question 4  Provide an appropriate responseFind the z–score that is greater than the mean and for which 70% of the distribution’s area lies to its left.

Question 5  Provide an appropriate response.
Find the z–score that has 84.85% of the distribution’s area to its right.

Question 6  Provide an appropriate response.The average number of pounds of red meat a person consumes each year is 196 with a standard deviation of 22 pounds (Source: American Dietetic Association). If a sample of 50 individuals is randomly selected, find the probability that the mean of the sample will be greater than 200 pounds.

Question 7  Provide an appropriate response.
Find the z–score for which 99% of the distribution’s area lies between –z and z.

Question 8  Provide an appropriate response.The distribution of room and board expenses per year at a four–year college is normally distributed with a mean of $5850 and standard deviation of $1125. Random samples of size 20 are drawn from this population and the mean of each sample is determined. Which of the following mean expenses would be considered unusual?

Question 1  Provide an appropriate response. Use a standard normal table to find the z–score that corresponds to the 80^th percentile.

Question 2  Provide an appropriate response.The average number of pounds of red meat a person consumes each year is 196 with a standard deviation of 22 pounds (Source: American Dietetic Association). If a sample of 50 individuals is randomly selected, find the probability that the mean of the sample will be less than 200 pounds.