Questions from Business Statistics

Q: The National Highway Traffic Safety Administration reported that there were 3206 fatal

The National Highway Traffic Safety Administration reported that there were 3206 fatal accidents involving drivers between the ages of 15 and 19 years old the previous year, of which 65.5% involved ma...

Q: Is the Statue of Liberty nose too long? Her nose measures

Is the Statue of Liberty nose too long? Her nose measures 4²6³, but she is a large statue, after all. Her arm is 42 feet long. That means her arm is 42/4.5=9.3 times as long as...

Q: The times of skaters in the qualifying heats for the women short

The times of skaters in the qualifying heats for the women short track race at the 2018 Olympics in PyeongChang are given in the table below. 1. The mean finishing time was 45.075 seconds, with a stan...

Q: A study in South Africa focusing on the impact of health insurance

A study in South Africa focusing on the impact of health insurance identified 1590 children at birth and then sought to conduct follow-up health studies 5 years later. Only 416 of the original group p...

Q: Babe Ruth was the first great slugger in baseball. His record

Babe Ruth was the first great slugger in baseball. His record of 60 home runs in one season held for 34 years until Roger Maris hit 61 in 1961. Mark McGwire (with the aid of steroids) set a new standa...

Q: Avoiding an accident when driving can depend on reaction time. That

Avoiding an accident when driving can depend on reaction time. That time, measured from the moment the driver first sees the danger until he or she steps on the brake pedal, is thought to follow a Nor...

Q: Is it a good idea to listen to music when studying for

Is it a good idea to listen to music when studying for a big test? In a study conducted by some statistics students, 62 people were randomly assigned to listen to rap music, Mozart, or no music while...

Q: A class of fourth graders takes a diagnostic reading test, and

A class of fourth graders takes a diagnostic reading test, and the scores are reported by reading grade level. The 5-number summaries for the 14 boys and 11 girls are shown: 1. Which group had the hig...

Q: Here are the number of pieces of mail received at a school

Here are the number of pieces of mail received at a school office for 36 days. 1. Plot these data. 2. Find appropriate summary statistics. 3. Write a brief description of the school mail deliveries. 4...

Q: Is your birth order related to your choice of major? A

Is your birth order related to your choice of major? A statistics professor at a large university polled his students to find out what their majors were and what position they held in the family birth...