Answer:
3/9 because theyre both equivalent to 1/3
Answer:
The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159
Step-by-step explanation:
According to the given data we have the following:
mean = μ= 22
standard deviation = σ = 2
n = 100
μx = 22
σx=σ/√n=2/√100=0.2
Therefore, P( x < 21.8)=P(x-μx)/σx<(21.8-22)/0.2
=P(z<-1)
= 0.159
The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159
18/38 - 47% chance of success
$1 to $100 - $10 to spend
With this given information, their is two routes to take, play it safe, or defy the odds. Though, a 47% chance isn’t far from 50/50, and at the end of the day, it is only $10 to lose. Therefore, in my opinion, even with the expected value, I would say to bet all the money at once, since the goal is to leave with $20.
Answer:
It's all real numbers . i.e (- infinity, + infinity)
Step-by-step explanation:
The function exists for all real values of y
Answer:
(2,5)
Step-by-step explanation:
The rule to 90 degrees about the origin is (x,y) to (-y,x). You basically switch the values of y and x but remember the value of y is negative. The value of y is -2 so -2 is now 2 since the rule changed the sign (-2×-y=2) and 5 isnt affected except it is the x value. Just know that since they r switched, x is now 2 and y is 5 when rotated 90 degrees about the origin.