The distribution of weights of newborn babies in a hospital…

The distribution of weights of newborn babies in a hospital is normally distributed, with a mean of 7.2 pounds and a standard deviation of 1.1 pounds. (Round z-scores to 2 decimal places and all else to 3 decimal places as needed.)   a. What is the Z-score for a newborn with a weight of 8.8 pounds? [a] b. Find the probability that a randomly selected newborn has a weight greater than 8.8 pounds. [b] c. Find the newborn weight that represents the 85th percentile. [c]

A company claims that fewer than 40% of its employees commut…

A company claims that fewer than 40% of its employees commute by car. A random sample of 200 employees shows that 78 commute by car. Use a 5% level of significance to test the company’s claim. (Round to 3 decimal places if needed)   Calculate the p-value using the appropriate table above. [a]