Salaries are normally distributed
Average salary per hour: $6.50 ⇒ μ=$6.50
σ=$0.45 (Standard deviation)
Probability that the selected worker will earn $6.75:
P(x>6.75)
Now you must standardize the normal random variables:
If x~N (μσ²) => Z=(x-μ)/σ
Z=(6.75-6.50)/0.45
Z=0.556 => P(Z>0.556)= ? (To find this probability, you must use the tables for Standard normal distribution).
Then:
P(Z>0.556)=0.2877
The probability of selecting a worker who earns more than $ 6.75 is 28.7%
Answer:
Step-by-step explanation:
1. $135
2. a. no
b. $340
3. a. 33
b. $135*33= $4455+340= $4795
4. a. $7630 = 135v + 340
b. 135v + 340 = 7630
135v = 7290
v = 54 vacuums
Answer:
50 miles per gallon
Explanation:
225 miles divided by 4.5 gallons will give the miles per gallon.
225
4.5
=
50
miles per gallon
Step-by-step explanation:
80% can be written as 0.8. You need to find 0.8 of 16.
You can write this as 16(0.8).
16(0.8) = 12.8 feet
Hope this helps.
