Answer:
7.5
Step-by-step explanation:
Answer:
n = 86
Step-by-step explanation:
Step 1: Write equation
41 + n = 127
Step 2: Subtract 41 on both sides
n = 86
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
41 + 86 = 127
127 = 127
Answer:
An invoice was paid an average of 20 days after it was received.
Mean =
Standard deviation =
Now we are supposed to find what percent of the invoices were paid within 15 days of receipt i.e.P(x<15)
Formula :
At x = 15
Substitute the values
Refer the z table for p value
So, p value = 0.1587
So, 15.87% of the invoices were paid within 15 days of receipt
Step-by-step explanation:
if the girls are "g" and the boys are "b"
g + b = 13
b = g + 7 <--- 7 more boys than girls
2 time 5 + 2x + 2 + 2x + 4 + 2x - 3
