Questions from Statistics Principles

Q: A survey of 451 men revealed that 144 men, or 3

A survey of 451 men revealed that 144 men, or 3 1.9%, wait until Valentine's day or the day before to purchase flowers. Identify a statistical population and the sample.

Q: Twelve bicycles are available for use at the student union. Use

Twelve bicycles are available for use at the student union. Use Table 1, to select 4 of them for you and three of your friends to ride today.

Q: A major West Coast power company surveyed 50 customers who were asked

A major West Coast power company surveyed 50 customers who were asked to respond to the statement, "People should rely mainly on themselves to solve problems caused by power outages" with one of the f...

Q: A sample of 50 departing airline passengers at the main check-

A sample of 50 departing airline passengers at the main check-in counter produced the following number of bags checked through to final destinations. (a) Make a relative frequency line diagram. (b) Co...

Q: A person with asthma took measurements by blowing into a peak-

A person with asthma took measurements by blowing into a peak-flow meter on seven consecutive days. 429 425 471 422 432 444 454 Display the data in a dot diagram.

Q: Before microwave ovens are sold, the manufacturer must check to ensure

Before microwave ovens are sold, the manufacturer must check to ensure that the radiation coming through the door is below a specified safe limit. The amounts of radiation leakage (mW/cm2) with the do...

Q: A campus area merchant recorded the number of bad checks received per

A campus area merchant recorded the number of bad checks received per month, for five months 4 5 4 7 6 Display the data in a dot diagram.

Q: The city of Madison regularly checks the water quality at swimming beaches

The city of Madison regularly checks the water quality at swimming beaches located on area lakes. The concentration of fecal coliforms, in number of colony forming units (CFU) per 100 ml of water, was...

Q: Recorded here are the blood types of 40 persons who have

Recorded here are the blood types of 40 persons who have volunteered to donate blood at a plasma center. Summarize the data in a frequency table. Include calculations of the relative frequencies.

Q: A student at the University of Wisconsin surveyed 40 students in her

A student at the University of Wisconsin surveyed 40 students in her dorm concerning their participation in extracurricular activities during the past week. The data on number of activities are Presen...