Questions from Statistics

Q: A Gallup poll of 1012 American adults showed that 89% of

A Gallup poll of 1012 American adults showed that 89% of Americans say that human cloning should not be allowed. The margin of error was 3 percentage points. Would it matter if a newspaper reported th...

Q: A Pew Research Center survey of 3002 adults showed that the percentage

A Pew Research Center survey of 3002 adults showed that the percentage who listen to National Public Radio is probably between 14% and 18% How should a newspaper report the margin of error? Explain.

Q: In a test comparing vinyl and latex laboratory gloves, it was

In a test comparing vinyl and latex laboratory gloves, it was found that 63% of the vinyl gloves leaked (allowing viruses to pass through), but only 7% of the latex gloves leaked.

Q: The percentage of the world’s population living in developed countries decreased from

The percentage of the world’s population living in developed countries decreased from 27.1% in 1970 to 16.4% now.

Q: The five-year survival rate for Caucasians for all forms of

The five-year survival rate for Caucasians for all forms of cancer increased from 39% in the 1960s to 61% now.

Q: Based on current data, 99.3% of newborns survive

Based on current data, 99.3% of newborns survive the first five years of their lives, and 72.6% of people who reach age 80 years survive the next five years of their lives.

Q: A recent Super Bowl football game had a “77 share,”

A recent Super Bowl football game had a “77 share,” meaning that among the television sets in use at the time of the game, 77% were tuned to the game. a. If the percentage of 77% is in error by up to...

Q: In a Gallup poll of 1236 adult respondents, 5% said

In a Gallup poll of 1236 adult respondents, 5% said that bad luck follows breaking a mirror. That percentage has a margin of error of 1.2 percentage points. Why is it misleading to state that the perc...

Q: You want to determine the percentage of drivers who text while they

You want to determine the percentage of drivers who text while they are driving.

Q: Distinguish between absolute and relative change. Give an example that illustrates

Distinguish between absolute and relative change. Give an example that illustrates how we calculate a relative change.