Given:
μ = $3.26 million, averaged salary
σ = $1.2 million, standard deviation
n = 100, sample size.

Let x = random test value
We want to determine P(x>4).

Calculate z-score.
z = (x - μ)/ (σ/√n) = (4 - 3.26)/(1.2/10) = 6.1667

From standard tables,
P(z<6.1667) = 1
The area under the distribution curve = 1.
Therefore
P(z>6.1667) = 1 - P(z<=6.1667) = 1 - 1 = 0

Answer: The probability is 0.

8 0

3 years ago

Ahmed is working at a restaurant . His boss pays him $15.50 per tour and promises a raise of $1.25 per hour every 6 months. Whic

aksik [14]

Answer:

Step-by-step explanation:

you have to make chart. You have to add 1.25 to your total every 6 months.

Start $15.50
6 months $15.75
12 months $18.00
18 months. $19.25

5 0

3 years ago

Find the lcm of 8 and 56

nalin [4]

8=8,16,24,32,40,48,and so on
56= 56, 112, 168

6 0

2 years ago