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
In a recent year, one United States dollar was equal to about 82 Japanese. How many Japanese yen are equal $100?$1,000?$10,000
<span>Given is: </span>
<span>1 USD = 82 Japanese Yen </span>
<span>Conversion: </span><span>
1. 100 USD x 82 JY / 1 USD = 8, 200 Japanese Yen</span> <span>
2. 1000 USD x 82 JY / 1 USD = 82, 000 Japanese Yen</span> <span>
3. 10, 000 USD x 82 JY / 1 USD = 820, 000 Japanese Yen</span>
Answer:
7
Step-by-step explanation:
Substitute in numbers : 2(5)+3(6) /4
Combine Like Terms : 10+18/4 = 28/4
Answer : 7
