PLZ hurry and help find the area of trapezoid
1 answer:
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Answer:
0.6604
Step-by-step explanation:
Given that a market research firm knows from historical data that telephone surveys have a 36% response rate.
Sample size of random sample = 280
We know for samples randomly drawn of large size sample proportion follows a normal distribution with mean= sample proportin and std error
=
Substitute p = 0.36 and q = 1-0.36= 0.64
p follows N with mean = 0.36 and std dev =
Using normal distribution values we can find\
Answer:
Step-by-step explanation:
I'm going to assume that the problem is -23x -214 = 274
And in that case...
1. First isolate the x-value by adding 214 to both sides of the equation:
-23x = 488
2. Then, divide both sides by -23 to truly get x alone:
x = or -21.22