What are you solving for???
I believe the problem ask for s which is the standard
deviation. We must recall that the formula for z statistic is stated as:
z = (x – x over bar) / s
Where,
z = z statistic = 2.5
x = sample value or sample score = 102
x over bar = the sample mean or sample average = 100
s = standard deviation = unknown
Rewriting the equation in terms of s:
s = (x – x over bar) / z
Substituting the given values into the equation:
s = (102 – 100) / 2.5
s = 0.8
Therefore the standard deviation s is 0.8
Answer:
the answer is D
Step-by-step explanation:
i believe it because of the total
Answer: 6 months
Step-by-step explanation:
if the camera was 150 dollars, and she pay 60 upfront,
150-60=90 dollars left to be paid
she pays 15 dollars a month
90/15=6 months
