ravis does reserch  and get average weight in pound of the lobsters location was  2.1 lbs and standard deviation with 1.8 lbs as a part of survey 27 lobsters with a mean of 3.1 lbs  assume that the lobsters he caught are sifnificantly heavier that those usually found in that location here use alpha = 0.05

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 75.6 inches tall. (to 2 decimal places) Submit Question

An automobile manufacture builds brakes with a specific diameter. The break data is normally distributed with a mean of 14.8 inches and a standard deviation of 1.3 inches. What percent of manufacture brakes have a size between 12.6 inches and 16.4 inches.

Airplane seats have widthts with a mean of 22.0 inches and a standard deviation of 1.8 inches. Find the z-score of an airplane seat 19.9 inches wide. (to 2 decimal places)

The ponderal index is a measure of overall size similar to a body mass index. The ponderal index of full term newborns follows a normal distribution with a mean of 2.4 kg/m3 and a standard deviation of 0.45 kg/m³. What percentage of full term newborns have a ponderal index greater than 2.5 kg/m³? Use Table 3 to obtain your answer. If necessary, round your final answer to 2 places after the decimal. Do not enter the % symbol, just the number representing the percent.