The first quartile represents the ________ percentile of the data set.

A random sample of 2008 used cars for sale on the market has an average mileage of 71,420 miles with a sample standard deviation of 9,470 miles. The z-score for a used car with 80,500 miles in this sample is ________. Round to 2 decimal places

Use the Poisson Table to answer the following questions A particular intersection in Delaware is equipped with a surveillance camera. The number of traffic tickets issued to drivers passing through the intersection follows the Poisson distribution and averages 4.5 per month. Use this information to answers the following question: What is the probability that 5 or more traffic tickets will be issued at the intersection next month?

Chebyshev’s Theorem only applies to

Outliers greatly reduce the effectiveness of the __________.

The following data represents the number of Sony TVs sold per day at a particular Costco over a random sample of five business days 9 2 7 7 5 The mean of this sample is ________.

Use the z table provided to answer the following question: Bob’s golf score at his local course follows the normal distribution with a mean of 92.1 and a standard deviation of 3.8. What is the probability that the score on his next round of golf will be between 82 and 89?

The variance of this sample 9 2 7 7 5 is ________.

Use the following information to answer the following question: A study conducted by Hershey’s discovered that Americans consumed an average of 11.4 pounds of chocolate per year. Let’s assume that the annual chocolate consumption follows the normal distribution with a standard deviation of 3.6 pounds What is the probability that a randomly selected American will consume more than 9lbs of chocolate next year?

Use the binomial table provided to answer the following questions A hotel claims that 90% of its customers are very satisfied with its service. Answer the following question based on a random sample of eight customers: What is the probability that exactly seven customers are very satisfied?