Posted by **albert** on Monday, May 9, 2011 at 11:55am.

The heights in centimetres of men in a sample selected at random may be modelled by a normal distribution with mean 180.5 and standard deviation 11.3.

1. Choose the option that is closest to the value above which 30% of the heights of men will lie.

Options for Question1

A 174.57 B 180.32 C 180.50 D 186.43 E 198.33 F 200.50

2. Choose the option that is closest to a range of values,symmetric

about the mean, within which the heights of approximately 80% of

men will lie.

Options for Question 2

A (157.0, 194.0) B (159.2, 201.8) C (167.8, 193.2) D (163.0, 198.0) E (166.0, 195.0) F (168.7, 192.2)

3. Choose the option that is closest to the percentage of heights of men below 170 cm.

Options for Question 3

A 17% B 18% C 19% D 40% E 41% F 42%

are those correct?

1. is D

2. is E

3. is B ?

Regards.

## Answer This Question

## Related Questions

- maths - The heights in centimetres of men in a sample selected at random may be ...
- stat - the average number of pushups a United States Marine does daily is 300, ...
- Statistics - 1. The scores of students on the ACT college entrance examination ...
- statistics - Consider a normal distribution with mean 20 and standard deviation ...
- Math- Statistics - A random sample of size 36 is to be selected from a ...
- statistics - random sample of n = 16 scores is selected from a normal ...
- Statistics - Suppose the heights of 18-year-old men are approximately normally ...
- statistics - A random sample of n= 16 scores is selected from a normal ...
- math - the sample of selected men have the average weight of 180 lb with the ...
- statistics - 1. A random sample of n = 16 scores is selected from a normal ...

More Related Questions