Questions from Statistics Principles

Q: (a) Suppose in a certain set of data, there

(a) Suppose in a certain set of data, there are two observations of 90 and 100. Is 90 far away from 100 if the standard deviation of the data is 10? (b) Suppose in a certain set of data, there are two...

Q: The following data represent exam scores in a statistics class taught using

The following data represent exam scores in a statistics class taught using traditional lecture and a class taught using a “flipped” classroom. The “flipped” classroom is one where the content is deli...

Q: The acidity or alkalinity of a solution is measured using pH.

The acidity or alkalinity of a solution is measured using pH. A pH less than 7 is acidic, while a pH greater than 7 is alkaline. The following data represent the pH in samples of bottled water and tap...

Q: The data represent the pulse rates (beats per minute) of

The data represent the pulse rates (beats per minute) of nine students enrolled in a section of Sullivan’s course in Introductory Statistics. Treat the nine students as a population. (a) Determine the...

Q: The following data represent the travel time (in minutes) to

The following data represent the travel time (in minutes) to school for nine students enrolled in Sullivan’s College Algebra course. Treat the nine students as a population. (a) Determine the populati...

Q: Ethan and Drew went on a 10-day fishing trip.

Ethan and Drew went on a 10-day fishing trip. The number of smallmouth bass caught and released by the two boys each day was as follows: (a) Find the population mean and the range for the number of sm...

Q: The following data represent driver’s license laws for various states.

The following data represent driver’s license laws for various states.

Q: The data below represent the number of pods on a sample of

The data below represent the number of pods on a sample of soybean plants for two different plot types. Which plot type do you think is superior? Why?

Q: The following data represent the weights (in grams) of a

The following data represent the weights (in grams) of a random sample of 50 M&M plain candies. (a) Determine the sample standard deviation weight. Express your answer rounded to three decimal places....

Q: The following data represent the length of eruption for a random sample

The following data represent the length of eruption for a random sample of eruptions at the Old Faithful geyser in Calistoga, California. (a) Determine the sample standard deviation length of eruption...