Answer:
296
Step-by-step explanation:
74+68+79+75
=142+79+75
=221+75
Answer:
90% confidence interval -> {0.4529, 0.5871}
Step-by-step explanation:
<u>Check conditions for a 1-proportion z-interval:</u>
np>10 -> 150(0.52)>10 -> 78>10 √
n(1-p)>10 -> 150(1-0.52)>10 -> 72>10 √
Random sample √
n>30 √
For a 90% confidence interval, the critical value is z=1.645
The formula for a confidence interval is:
CI = p ± z√[p(1-p)/n]
<u>Given:</u>
p = 78/150 = 0.52
n = 150
z = 1.645
Therefore, the 90% confidence interval is:
CI = 0.52 ± 1.645√[0.52(1-0.52)/150] = {0.4529, 0.5871}
Context: We are 90% confident that the true proportion of all voters who
plan to vote for the incumbent candidate is contained within the interval
There are 4 cups in 1 quart.
4 x 3 = 12
3 quarts = 12 cups
Hope this helps. :)
Answer:
f(3) = 30
Step-by-step explanation:
simply plug in 3 for x, since the 3 is located in the x area of f(<u>x</u>):
f(3) = 4(3)2 + 6
f(3) = 12(2) + 6
f(3) = 24 + 6
f(3) = 30
Answer:
Step-by-step explanation:
729 = 9³
by definition
can be written as 
by the same reasoning
can be written as 
