3(20)=60
2(20)=40
1(2)=2
3(15)=45
2(20)=40
1(17)=17
3(10)=30
2(30)=60
1(12)=12
3(27)=81
2(10)=20
1(1)=1
3(9)=27
2(18)=36
1(39)=39
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
To find out how much you need when you need a fraction of a number like 1/3 of 9, you can multiply the whole number by the fraction in most cases.
In some cases however, you can convert the whole number into a fraction and then divide it to get the amount in fractional units that you require.
For example:
1/3 of 9
Convert 9 to a fraction.
1/3 / 9/1
1/3 x 9/1 = 3/9
Therefore you would need 3 of 9 for 1/3.
m = 2p + 3
I'm going to say that is correct because you're trying to find m, which is Linda's score. And her score is 2 times + 3 more than Lisa's.
Hope this helps!!(:
Answer:
1
/16
Step-by-step explanation:
