Question
1) The amount of snowfall falling in a certain mountain rangeis noramlly distributed with a mean of 104inches, and a standarddeviation of 16 inches. What is the probability that the meanannual snowfall during 64 randomly picked years will exceed 106.8inches? 2) A bank loan officer rates applicants for credit. Theratings are normally distributed with a mean of 200 and a standarddeviation of 50. If an applicant is randomly selected, findthe probability of a rating that is between 200 and 275. 3)The diameter of bolts produced by a certain machine andnormally distributed with a mean of 0.30 inches and a standarddeviation of 0.01 inches. What percentage of bolts will havea diameter greater than 0.32 inches? 4) find the critical value z/2 that corresponds to adegree of confidence. 5)Margin of error: $133, confidence level: 95%,-$503 1) The amount of snowfall falling in a certain mountain rangeis noramlly distributed with a mean of 104inches, and a standarddeviation of 16 inches. What is the probability that the meanannual snowfall during 64 randomly picked years will exceed 106.8inches? 2) A bank loan officer rates applicants for credit. Theratings are normally distributed with a mean of 200 and a standarddeviation of 50. If an applicant is randomly selected, findthe probability of a rating that is between 200 and 275. 3)The diameter of bolts produced by a certain machine andnormally distributed with a mean of 0.30 inches and a standarddeviation of 0.01 inches. What percentage of bolts will havea diameter greater than 0.32 inches? 4) find the critical value z/2 that corresponds to adegree of confidence. 5)Margin of error: $133, confidence level: 95%,-$503
Explanation / Answer
1) The amount of snowfall falling in a certain mountain rangeis noramlly distributed with a mean of 104inches, and a standarddeviation of 16 inches. What is the probability that the meanannual snowfall during 64 randomly picked years will exceed 106.8inches? 2) A bank loan officer rates applicants for credit. Theratings are normally distributed with a mean of 200 and a standarddeviation of 50. If an applicant is randomly selected, findthe probability of a rating that is between 200 and 275. 3)The diameter of bolts produced by a certain machine andnormally distributed with a mean of 0.30 inches and a standarddeviation of 0.01 inches. What percentage of bolts will havea diameter greater than 0.32 inches? 4) find the critical value z/2 that corresponds to adegree of confidence. 5)Margin of error: $133, confidence level: 95%,-$503