Answer: 0.16
Step-by-step explanation:
Given that the run times provided are normally distributed ;
Mean(x) of distribution = 3 hours 50 minutes
Standard deviation(s) = 30 minutes
The probability that a randomly selected runner has a time less than or equal to 3 hours 20 minutes
3 hours 20 minutes = (3 hrs 50 mins - 30 mins):
This is equivalent to :
[mean(x) - 1 standard deviation]
z 1 standard deviation within the mean = 0.84
z, 1 standard deviation outside the mean equals:
P(1 - z value , 1standard deviation within the mean)
1 - 0.8413 = 0.1587
= 0.16
Answer:
12 bars of soap for $10.00, but actullay the are both the same. if u buy 5 bars of soap for $4.00 then the next time u buy 7 bars of soap, your are still using the same amount of money.
Step-by-step explanation:
I think the answer would be
X=1.5
Y= -10 or -12 or 12
Sorry I'm not sure
Answer:
C. 20(degree symbol)
Step-by-step explanation:
lol I couldn't find the degree symbol so I just did that
hope this helps :)
42% of the body voted = 11960
Total student body = 11960/42% = 28476.19 = 28476 students
