Sunday

February 1, 2015

February 1, 2015

Posted by **Pam** on Saturday, January 2, 2010 at 10:13am.

the probability that a tomato seed will germinate is 60%. A gardener plants in batches of 12.

A.) what is the probaility that exactly 10 seeds will germinate?

B.) what is the probability that 10 or more will germinate?

C.) what is the probability that all seeds will germinate?

D.) Find the mean.

E.) find the standard deviation.

Could someone please help me?

- statistics -
**Reiny**, Saturday, January 2, 2010 at 10:33amYour first 3 questions deal with binomial distribution in probability.

A) for exactly 10 out of 12

C(12,10) (.6)^10 (.4)^2

= 66(.00605)(.16)

= .0639

B) repeat the same calculations as above for

10 out of 12 + 11 out of 12 + 12 out of 12

C)that would be C(12,12)(.6)^12 = .002177

(you should have had the same result for the last part of B) )

- statistics -
**drwls**, Saturday, January 2, 2010 at 11:06amI assume you refer to the batches of 12 planted seeds.

A)P(10) = (0.6)^10*(0.4)^2*[10!/(8!*2!)]

= 0.006047*0.16*(10*9/2)= 0.04359

B) Add P(10), P(11) and P(12)

P(11) = 0.6^11*0.4*10= 0.01451

See the next answer for P(12)

C) P(12) = (0.6)^12 = 0.00218

D) mean = (0.6)*12 = 7.2

E) sqrt[12*(0.6)(0.4)] = 1.70

(I'm not sure about the last one)

**Answer this Question**

**Related Questions**

calculus - I am working on this problem and having some trouble. We're supposed ...

Math - I am having trouble figuring out how to find the domains an example ...

Statistics - 10, 12, 16, 17, 20 I'm having a problem figuring out how the answer...

Physics - HELP! PLEASE - The problem is from fundamentals of physics 9th edition...

Physics...Help please - The problem is from fundamentals of physics 9th edition ...

Trig - Find an equation for the hyperbola described. Foci at (-4,0) and (4,0); ...

Geometry - The midpoint of line segment AB is (1,2). The coordinates of A are (-...

Math - Am having trouble figuring out how to work this problem. We are currently...

Math - Having trouble figuring out this problem. I'm supposed to write the ...

Accounting question.. - Having trouble figuring out how to do this problem for ...