Answer: i dont understand the question
Step-by-step explanation:
Answer:
3192 persons! ✔️
Step-by-step explanation:
From the statement, we know that μ = 40 [minutes] and σ = 6 [minutes]
There are 3900 people. And we need to find how many of the lie within one standard deviation below the mean and two standard deviations above the mean.
We need to find the probability between: 34 minutes and 52 minutes. With the help of a calculator we get that the probability is: P(34<z<52) = 0.8186
Therefore, 0.8186×3900 = 3192 persons! ✔️
Answer:
7/36
Step-by-step explanation:
1 die has 6 faces
When two dice are rolled, the total number of outcomes
= 6 × 6 = 36
The Probability of having(5) =
(1 & 4), (2 & 3) , ( 3 & 2), (4 & 1)
= 4
The probability of having (10) =
(5 & 5), (4 & 6) , ( 6 & 4)
= 3
The probability that the score on the dice is either 5 or 10.
P(5) + P(10)
= 4/36 + 3/36
= 7/36
Answer:
135 pennies
Step-by-step explanation:
x= pennies in the door at the start
x-1/3x-1/3(x-1/3x)-1/3(x-1/3x-1/3(x-1/3x))=40
x = 135
Proof:
135-45-20 =40
135-45=90
90=30=60
60-20=40