A pizza shop has a delivery time that is normally distributed with a mean of 23.8 minutes and a standard deviation of 6.4 minutes. a. What is the chance a single pizza delivery takes over 30 minutes? b. What is the chance 250 pizzas average over 30 minutes? c. Which answer matters if you order a pizza? d. Which answer matter if you are the manager of the pizza shop? Think: What picture do you draw and why? Think: What checks do you need to write out? Think: What was the Z score in this problem? Think: Is your Z high or low? Unusual or not? Think: Does one individual matter? Who cares about a single pizza? Does the average of a group matter? Who cares about many pizzas at the same time? If it is all clear take a crack at this example of a quiz below

The following data represents the number of blogs that a sample of students state they follow. 12, 3, 10, 9, 0, 1, 8, 7, 3, 10, 19 Calculate the standard deviation.

In the 1992 presidential election, Alaska's 40 election districts averaged 1993 votes per district for President Clinton. The standard deviation was 584. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X ~ N( b. Is 1993 a population mean or a sample mean? Select an answer v C. Find the probability that a randomly selected district had fewer than 2053 votes for President Clinton. d. Find the probability that a randomly selected district had between 2074 and 2208 votes for President Clinton. e. Find the 95th percentile for votes for President Clinton. Round your answer to the nearest whole number.

The p-value is which? the same as the z statistic. a sample statistic. a probability. a distance.