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
Answer:
70 degrees
Step-by-step explanation:
When two angles are supplementary, their measures must add up to 180 degrees. Therefore:
110+x=180
x=180-110
x=70
Hope this helps!
Answer:
10.3 is the length
Step-by-step explanation:
If the area of a parallelogram is B * H then finding one side is dividing area by base or by height
88.58 / 8.6
Answer:
13
Step-by-step explanation:
convert 52% into a decimal which is 0.52 then mulitply by 25 to get your answer
The total cost for n notebooks is 0.75n. Also, the total amount paid for the p pens is 0.55p. Adding them all up will give us an answer of, 0.75n + 0.55p.
Now, including the 6.25% tax, the total amount to be paid is, total amount = 1.0625(0.75n + 0.55p)
