Q3) If P(z < z*) = 0.95, then P(z* < z < z*) = .

Q4) Find the z-score that marks the 5^th percentile (denoted P₅). That is, find the z-score that delineates the lower 5% from the upper 95% of all the z-scores. Enter your answer to 2 or 3 decimal places.

Q5) Find the z-scores that delineate the middle 90% of all values from the others. Enter your answers to 2 or 3 decimal places. from__________ to ______________

Q8)Potatoes - Samples: Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.1 ounces and a standard deviation of 1.2 ounces. (a) If 5 potatoes are randomly selected, find the probability that the mean weight is less than 9.4 ounces. Round your answer to 4 decimal places. (b) If 7 potatoes are randomly selected, find the probability that the mean weight is more than 9.0 ounces. Round your answer to 4 decimal places.

Q9) Potatoes - Samples: Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.0 ounces and a standard deviation of 1.3 ounces. Suppose Carl bags his potatoes in randomly selected groups of 6. What percentage of these bags should have a mean potato weight between 7.5 and 8.5 ounces? Enter your answer as a percentage rounded to one decimal place.____________%