Answer:
f(9)=-2
Step-by-step explanation:
f(9)= -9+7= -2
The IQR is 38 bc the Q1 is 62 and Q3 is 100. 100-62=38
Answer:
Step-by-step explanation:
The pdf of X is given by 3e^x(1-e^-2y). Please check the screenshot for the workings.
The pdf of Y is given by 6e^-2y. Please check the screenshot for the workings.
The expected time the device fails is the expected time Y fails, so we are going to find the expected time of Y which equals to 0.83.
Please check the screenshop for the workings. Thanks
3/1 - 3/8 = 21/8
SIMPLIFIED= 2 and 5/8
2 and 5/8 is your answer.
1) sample
2. random sample
3. biased sample
4. estimating from a sample
hope it helps