Answer:
7
Step-by-step explanation:
Answer:
a) 0.4567
b) 6 hours
Step-by-step explanation:
We are given the following information the question:
The battery life follows a normal distribution with
Formula:
a) We have to find probability such that battery life exceeds 10 hours, that is,
P(X>10)
b) We have to find battery life such that
Here, we calculated the value of z from the normal distribution table.
So, after approximately 6 hours one should plan to recharge the phone.
Answer: 3 x n -10 = n + 4
Step-by-step explanation:
n is your number,
3 times a number is 3 x n;
10 less than 3 times a number is 3 x n - 10
same means equality, we will use "="sign
3 x n - 10 = ...
n is your number
number plus 4 is (n + 4) --->
final expression is:
3 x n - 10 = n + 4
Answer:
- p(green) = 0.5
- odds in favor of green: 1 : 1
Step-by-step explanation:
There are 5 green marbles among the 10 in the bag, so the probability of drawing one at random is 5/10 = 0.50.
The odds in favor of drawing a green marble will be the ratio of the number of green marbles to the number that are not green: 5 : 5. Usually, the odds are expressed using integers with no common factors, so they would be written as 1 : 1.
