Questions from Statistics

Q: Why can it be misleading to give measurements with more precision than

Why can it be misleading to give measurements with more precision than is justified by the measurement process?

Q: The price of a gallon of gas tripled, so it increased

The price of a gallon of gas tripled, so it increased by 300%.

Q: A dealer has a new Corvette with a sticker price of $

A dealer has a new Corvette with a sticker price of $60,000. Because the demand is high and the supply is low, the dealer announces that the actual cost will be 10% more than the sticker price, so the...

Q: My bank raised its interest rate on savings accounts from 1%

My bank raised its interest rate on savings accounts from 1% to 1.5%, which was a 50% increase.

Q: Announcement in a large department store: “Attention shoppers. Everything

Announcement in a large department store: “Attention shoppers. Everything in the store is now reduced by 10%, but in one hour all prices will be increased by 10%.” The prices will therefore revert to...

Q: A study of 3005 adults aged 57 to 85 showed that 82

A study of 3005 adults aged 57 to 85 showed that 82% of them use at least one prescription drug. The margin of error is 2 percentage points (based on data from “Use of Prescription and Over-the-Counte...

Q: Express each of the following numbers in the three forms of fraction

Express each of the following numbers in the three forms of fraction, decimal, and percentage. a. 3/5 b. 0.8 c. 150% d. -25%

Q: Express the following numbers in the three forms of fraction, decimal

Express the following numbers in the three forms of fraction, decimal, and percentage. a. 275% b. 3.75 c. -0.45 d. 90%

Q: A study was conducted of pleas made by 1348 criminals. Among

A study was conducted of pleas made by 1348 criminals. Among those criminals, 956 pleaded guilty and 392 of them were sentenced to prison. Among 72 other criminals who pleaded not guilty, 58 were sent...

Q: A study was conducted to determine whether flipping a penny or spinning

A study was conducted to determine whether flipping a penny or spinning a penny has an effect on the proportion of heads. Among 49,437 trials, 29,015 involved flipping pennies, and 14,709 of those pen...