Monday

September 22, 2014

September 22, 2014

Posted by **rose** on Monday, November 23, 2009 at 5:03pm.

1. exactly 10 have pain caused by weak trunk muscles

2. more than 8 have pain caused by weak trunk muscles

3. fewer than 6 have pain caused by weak trunk muscles

- statistics -
**Reiny**, Monday, November 23, 2009 at 5:33pm1. Prob(pain caused by w.t.m.) = .8

prob(pain not caused by w.t.m.) = .2

so prob(exactly 10 caused by w.t.m.)

= C(15,10)(.8^10)(.2^5)

= .10318

2. lots of calculations here,

more than 8 means

exactly 9 + exactly 10 + exactly 11 + ...+ exactly 15

= C(15,9)(.8^9)(.2^6) + C(15,10)(.8^10)(.2^5) + ... + C(15,15)(.8^15)

2. done in a similar way, except you want

exactly 0 + exactly 1 + .. + exactly 5

= C(15,0)(.2)15 + C(15,1)(.8)(.2^14) + ..

happy calculating.

**Answer this Question**

**Related Questions**

Fitness and Safety - Are these right ? 7. Which major muscles are used in your ...

Psychology - I have never been a good problem solver. I am not direct enough to ...

Physical therapy aide - A pta can supervise a physical therapy aide to perform ...

College Psych - All of the following would be considered psychotherpy EXCEPT: a...

HCA 230 - Biomedical is a physical phemonenon while biopsychosocial is physical...

Calc - The Public Health Service monitors the spread of an epidemic of a ...

Introduction to Occupational Thearpy - 1. What type of facility treats most of ...

Statistics - The psychologists are interested in whether depressed people ...

Calculus - An epidemiologist determines that a particular epidemic spreads in ...

statistics - it has been reported that 40% of all internet users have been ...