Answer:
a
b
Step-by-step explanation:
From the question we are told that
The percentage of ENC made by Alice is P(A) 85% = 0.85
The percentage of ENC made by Byte P(B) 10%=0.10
The percentage of ENC made by Cognizant P(C) = 5%= 0.05
The percentage rate of defect of ENC made by Alice is p = 2.5 % = 0.025
The percentage rate of defect of ENC made by Byte is q = 4.0% = 0.04
The percentage rate of defect of ENC made by Cognizant r = 6% =0.06
Generally the probability that a randomly selected ENC will be made by Alice is
Generally the probability that a randomly selected ENC that was found to be defective will be made by Alice is
Here
is the probability that a randomly selected ENC will be defective and this is mathematically represented as
=>
=>
So
=>
Answer: (143.07, 158.93)
Step-by-step explanation:
The formula to find the confidence interval is given by :-
where n= sample size
= Sample mean
z* = critical z-value (two tailed).
= Population standard deviation
We assume that the underlying population distribution is normal.
As per given , we have
n= 108
Critical value for 99% confidence level = 2.576 (By using z-table)
Then , the 99% confidence interval for the population mean hours spent watching television per month :-
Hence, the required 99% confidence interval for the population mean hours spent watching television per month. = (143.07, 158.93)
Answer:
The answer is 10
Step-by-step explanation:
-add all numbers in a sum
-divide by total of numbers
-use 1.5 strategy
-you get ten
Answer:
9÷5/876"that the answer because You have to división that seat
Answer:
Step-by-step explanation:
Each triangle = - x
There are 4 of them
They equal -4x
The circles all = 1
There are 3 circles on the left
They equal 3*1 = 3
There are eleven circles on the right.
-4x + 3 = 11 Subtract 3
-4x/-4 = 8 Divide by - 4
x = 8/-4
x = -2