Step-by-step explanation:
A. 2(10)-(-10)
20 -(-10) -------> (-)×(-) =(+)
20 + 10
30
B.29 + 1
30
Answer:
1.04%
Step-by-step explanation:
Using the z-score formula, we have:
z = (X - P) / σ
z = score
x = given value
P = average
σ = standard deviation
Z = (40 - 43.7) / 1.6 = 2.31 > <u>0.9896</u> (tabulated in the z-table)
Now, with that number, we find the probability that a randomly selected worker works less than 40 hours per week.
1 - 0.9896 = 0.0104 * 100 = 1.04%
Y= y1
replace the y1 with the ordinate ( the y-part) of the point you are going thru
example a horizontal line going through the point (7,12) would be y=12
Answer:
6.52 × 1, 000, 000 or 6, 520, 000