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Chapter 10: Q. 40 (page 652)

40. Household size How do the numbers of people living in households in the United Kingdom (U.K.) and South Africa compare? To help answer this question, we used Census At School鈥檚 random data selector to choose independent samples of 50 students from each country. Here is a Fathom dotplot of the household sizes reported by the students in the survey.

Short Answer

Expert verified

All requirements (Random, Normal, and Independent) have been met.

Step by step solution

01

Given information

A School鈥檚 random data selector to choose independent samples of 50 students from each country.

02

Explanation

Random, Normal, and Independent are the requirements for two-sample t methods.

Random: Because the data was obtained, utilizing the random data selector, which is satisfied.
Normal: Satisfied, that both samples (50)have a sample size of at least 30.
Independent: Satisfied since the samples are independent and the sample size is less than 10% of the total population size.
As a result, all conditions have been met.

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Most popular questions from this chapter

Computer gaming Do experienced computer game players earn higher scores when they play with someone present to cheer them on or when they play alone? Fifty teenagers who are experienced at playing a particular computer game have volunteered for a study . We randomly assign 25of them to play the game alone and the other 25to play the game with a supporter present. Each player鈥檚 score is recorded.

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