The amount of bleach a machine pours into bottles has a mean of 36 oz. with a standard deviation of 0.15 oz. Suppose we take a random sample of 36 bottles filled by this machine. The probability that the mean of the sample is less than 36.03 is ________.
Fill in the blank(s) with correct word
Q. 2A worker earns 15 per hour at a plant in China and is told that only 2.5 of all workers make a higher wage. If the wage is assumed to be normally distributed and the standard deviation of wage rates is 5 per hour, the average wage for the plant is 7.50 per hour.
Indicate whether the statement is true or false
Q. 3The amount of bleach a machine pours into bottles has a mean of 36 oz. with a standard deviation of 0.15 oz. Suppose we take a random sample of 36 bottles filled by this machine. The probability that the mean of the sample exceeds 36.01 oz. is ________.
Fill in the blank(s) with correct word
Q. 4The probability that a standard normal variable, Z, is less than 5.0 is approximately 0.
Indicate whether the statement is true or false