thanks in advance

inkostang problemmal table. A company makes parts for a machine, The length,fiber - IIIc-1, arts must be within certain M11/12SP - IIIc-2, M11/12SP - IIIc-3, and M11/12SP - IIIc-4 limits or they will be rejected. A large number of parts were measured and the mean and standard deviation were calculated as 3.1 m and 0.005 m respectively. Assuming this data is normally distributed and 99.7% of the parts were accepted, what are the limits? 2. The ages of the population of a town are normally distributed with mean 43 and standard deviation 14. The town has a population of 5,000. How many would you expect to be aged between 22 and 57? 3. The average waist size for teenage males is 29 inches with a standard deviation of 2 inches. If waist sizes are normally distributed, determine the z-score of a teenage male with a 3 3inch waist. 4. In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. Approximately 95% of molds filled by this inachine will hold weights in what interval? 8