Answer:
hahahhaa thanks
Step-by-step explanation:
ahahahhahahad
Answer:
Step-by-step explanation:
X has a binomial distribution when the probability of X is the same for each spin.
When the spinner is spun four times, X is the number of times the spinner does not land on an odd number.
When the spinner is spun five times, X is the number of times the spinner lands on 1.
Answer:
4.25 km^2
Step-by-step explanation:
Assuming this is a rectangular area
A = l*w
1.7*2.5
4.25 km^2
We can find angle STN through sum of angles in a triangle.
180 - 90 - 32 = 59 degrees.
Therefore, x is 59 degrees because they are alternate angles, indicated by the Z shape.
We can work out angle MNT by sum of angles in a line.
180 - 59 = 121 degrees.
3y + 4 = 121
3y = 117
y = 39
You'll have to work out the area under the normal curve that maps to the range 2975-3050. So we have to scale the numbers to the world of the standard normal curve.
Step 1: subtract the mean, so that 0 is our mean. This means the range changes to -25..+50. (can you see that I subtracted 3000?)
Step 2: Divide by the standard deviation 38, so that the new sd becomes 1.
This means our range becomes -0.66 to 1.32.
Now we have values that we can lookup in the standard normal table. This has to happen in two steps. First we lookup the probability for Z < 1.32, then we subtract the probability for Z<-0.66.
0.9066 - 0.2546 = <span>0.652 or 65.2%</span>
