Section 3.4 Homework

4.  Explain the meaning of the following percentiles in parts​ (a) and​ (b).

​(a) The 5th percentile of the weight of males 36 months of age in a certain city is 13.0 kg.

​(b) The 95th percentile of the length of newborn females in a certain city is 54.3 cm.

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(a) Choose the correct answer below.

1.   5​% of males weigh 13.0 kg or​ less, and 95​% of​ 36-month-old males weigh more than 13.0 kg.
2.   5​% of​ 36-month-old males weigh 13.0 kg or​ more, and 95​% of​ 36-month-old males weigh less than13.0 kg.
3.   5​% of​ 36-month-old miles weigh 13.0 kg or​ less, and 95​% of​ 36-month-old males weigh more than13.0 kg.
4.   5​% of males weigh 13.0 kg or​ more, and 95​% of​ 36-month-old males weigh less than 13.0 kg.

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(b) Choose the correct answer below.

1. 95​% of newborn females have a length of 54.3 cm or​ more, and 5​% of newborn females have a length that is less than 54.3 cm.
2. 95​% of females have a length of 54.3 cm or​ less, and 5​% of newborn females have a length that is more than 54.3 cm.
3. 95​% of newborn females have a length of 54.3 cm or​ less, and 5​% of newborn females have a length that is more than 54.3 cm.
4. 95​% of females have a length of 54.3 cm or​ more, and 5​% of newborn females have a length that is less than 54.3 cm.