Calculate the standard deviation if a total of 52 beads are drawn and the probability of drawing a white bead is 0.34 and the probability of drawing a red bead is 0.66.

3.416

Step-by-step explanation:

Let Event R = drawing a red bead

Event W = drawing a white bead

As per given : P(R) = 0.66 and P(W)=0.34

Also, P(R)+P(W)=0.66+0.34=1.00

It means , there are only two events.

In Binomial distribution (For two independent event) , the standard deviation is given by :-

, where n= number of trials , p = probability of getting one event , q = probability of getting other event.

For current situation , n= 52 , p=0.66 , q=0.34

Substitute the corresponding values  , we get

Hence, the standard deviation is 3.416.

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: