Answer:
Step-by-step explanation:
Assuming a normal distribution for the amount spent by Canadian households for high-speed broadband access, the formula for normal distribution is expressed as
z = (x - u)/s
Where
x = amount spent by the Canadian households.
u = mean amount spent monthly.
s = standard deviation
From the information given,
u = $80.63 CDN
s = $27.32 CDN
We want to find the probability that the average amount will exceed $85. It is expressed as
P(x greater than 85) = 1 - P(x lesser than or equal to 85)
For x = 85
z = (85 - 80)/27.32 = 0.18
Looking at the normal distribution table, the corresponding z score is 0.57142
P(x greater than 85) = 1 - 0.57142 = 0.43
Answer:
The common ratio of the geometric sequence is:
Step-by-step explanation:
A geometric sequence has a constant ratio 'r' and is defined by
where
Given the sequence
Compute the ratios of all the adjacent terms: 
The ratio of all the adjacent terms is the same and equal to
Therefore, the common ratio of the geometric sequence is:
Tthe answer is 3. 3=S 4 x 3 + 1 = 13
<span>15x+35 = 5(3x + 7)
hope that helps</span>
Z-4.5 = -1.5
Add 4.5 to each side:
z = -1.5 + 4.5z = 3
Cedric is correct because he used the inverse of subtraction and added 4.5.
