Answer:
I used Desmos. Heres a picture of what its supposed to look like.
Step-by-step explanation:
Answer:
a.0.8664
b. 0.23753
c. 0.15866
Step-by-step explanation:
The comptroller takes a random sample of 36 of the account balances and calculates the standard deviation to be N42.00. If the actual mean (1) of the account balances is N175.00, what is the probability that the sample mean would be between
a. N164.50 and N185.50?
b. greater than N180.00?
c. less than N168.00?
We solve the above question using z score formula
z = (x-μ)/σ/√n where
x is the raw score,
μ is the population mean = N175
σ is the population standard deviation = N42
n is random number of sample = 36
a. Between N164.50 and N185.50?
For x = N 164.50
z = 164.50 - 175/42 /√36
z = -1.5
Probability value from Z-Table:
P(x = 164.50) = 0.066807
For x = N185.50
z = 185.50 - 175/42 /√36
z =1.5
Probability value from Z-Table:
P(x=185.50) = 0.93319
Hence:
P(x = 185.50) - P(x =164.50)
= 0.93319 - 0.066807
= 0.866383
Approximately = 0.8664
b. greater than N180.00?
x > N 180
Hence:
z = 180 - 175/42 /√36
z = 5/42/6
z = 5/7
= 0.71429
Probability value from Z-Table:
P(x<180) = 0.76247
P(x>180) = 1 - P(x<180) = 0.23753
c. less than N168.00?
x < N168.
z = 168 - 175/42 /√36
z = -7/42/6
z = -7/7
z = -1
Probability value from Z-Table:
P(x<168) = 0.15866
<span>Without any radio advertising, the weekly profit would be about $1600.</span>
Answer:
0,5X + (-2), but you have to solve it... I give you the equation.
Step-by-step explanation:
In part A you have to find the equation of the line, so you do end - origin and you'll find m. I can only help you with the first one.
so:
(8,2) and (10,3)
(10-8,3-2) = (2,1)
V2/V1= 1/2= 0,5=m (slope of the line)
y= mx+n (change y, x and m with the ones above)
2= 8·0,5+n
2= 4+n
n= 2-4=-2
the equation is: 0,5X + (-2) and then you just have to change x in both equations, the second one is the h(x) adn it will give you the answer to A.
I hope I'm being helpful..!!!
