A. 10% because 6 is ten percent of 60 which is the number of trials.
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%
Y (y + 6y^2) = y^2 + 6y^3
Answer:
A. The number of minutes of calls within the US are and outside the US are ; therefore total cost of talk time is:
B. [Graph shown in picture]
Step-by-step explanation:
Answer:x= 45°
Step-by-step explanation:
The value of angle LKN is 75°becausw the theorem vertically oposite angles
Then the value of angle LPN is 45° because figure LKNP is a rectangle so the sum of the angles should be 360°so 120°+120°+75°+angle LPN is 360°so the value of angle LPN is 45°
The value of x is also 45° because of vertically oposite angles theorem
