<span>a.
</span>Do you
have sufficient funds to estimate the population mean for the attribute of
interest with a 95% confidence interval 4 units width? Assume that sd= 12
n= {[(Zalpha/2)^2]*[sd]^2}/
se^2
n=
(1.96)^2*(12)^2/ (2)^2
n=
138.297 rounded up to 139
<span>There
is not enough funds for this one
since you’ll need 139 pieces and it costs 10 a piece, you’ll need 1390.</span>
b.
90% confidence interval
n= {[(Zalpha/2)^2]*[sd]^2}/
se^2
n=
(1.645)^2*(12)^2/ (2)^2
n=98
There is enough
funds since 98 pieces for 10 a piece is equal to 980.
Answer:
-2w^2 - 5w + 7
Step-by-step explanation:
Just the values with the same powers of w
(3w^2-5w^2)+(-7w+2w)+(6+1)
-2w^2 - 5w + 7
The answer is (4, 3). Hope this helps!
Answer: The correct answer is -2,5/2 which is the last answer.
Step-by-step explanation:
* Hopefully the work below helps:)Mark me the brainliest:)!!
Answer:
answer is in explanation
Step-by-step explanation:
