All information is provided

When a production process is operating correcy, the number of units produced per hour has a normal distribution with a mean of 104 and a standard deviation of 8. A random sample of 18 hours was taken. Complete parts (a) through (d). a. Find the mean of the sampling distribution of the sample means. E (i) = 104 (Type an integer or a decimal.) h. Find the variance of the sample mean. a; = 4 (Type an integer or a decimal.) c. Find the standard error of the sample mean. 6i = E (Type an integer or a decimal.) Suppose that we have a population proportion P = 0.30 and a random sample oi size n =4L'IEI drawn from the population. Complete (a) through is} below. Click the icon to View the standard normal table oi the cumulative distribution tundion. a. What is the probability that the sample proportion is greater than 0.33? P[p '.> 0.33} = D (Round to four decimal places as needed]