Tuesday

April 21, 2015

April 21, 2015

Posted by **LadyJustice85** on Wednesday, June 1, 2011 at 11:33am.

X 0 1 2 3 4

P(X) 0.07 0.20 0.38 k 0.13

(a) Find the missing probability value of k

(b) Find the mean of X

(c) Find the standard deviation of X

- Statistics -
**Mgraph**, Wednesday, June 1, 2011 at 12:17pma)k=1-(0.07+0.20+0.38+0.13)=0.22

b)M(X)=0*0.07+1*0.20+2*0.38+3*0.22+4*0.13=

=2.14

c)M(X^2)=0*0.07+1*0.20+4*0.38+9*0.22+

+16*0.13=5.78

The standard deviation=

=sqrt(M(X^2)-M(X)^2)=1.10

statistic - A survey of households in a small town showed that in 500 of 1,200 ...

business statistics - It has been reported that 10.3% of U.S. households do not ...

business statistics - It has been reported that 10.3% of U.S. households do not ...

business statistics - It has been reported that 10.3% of U.S. households do not ...

business statistics - It has been reported that 10.3% of U.S. households do not ...

statistics - How many TV's are there in your household?” was one of the ...

statitics - Approximately 40% of all U.S. households own at least one dog (...

statistics - The probability that a person has an unlisted telephone number is 0...

Statistics - 3. A telephone company wants to estimate the porportion of ...

statistics - The average temperature in households is 67.6 degrees F. The ...