Find the critical value Za/2 that corresponds to the confidence level 90%. Zal2= (Round to two decimal places as needed.) www

The confidence interval for a population porportion is (0.68, 0.82). What the the sample proportion and the margin of error. I Margin of Error = Give your answers as decimals, to two places.

Today, the waves are crashing onto the beach every 6 seconds. The times from when a person arrives at the shoreline until a crashing wave is observed follows a Uniform distribution from 0 to 6 seconds. Round to 4 decimal places where possible.   59% of the time a person will wait at least how long before the wave crashes in?  seconds. Find the minimum for the upper quartile.  seconds.

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 64.5 inches tall. (to 2 decimal places)