its 14n+21. 7×2n is 14n, and 3×7 is 21
The 95% confidence interval of voters not favoring the incumbent is (0.0706, 0.1294).
Sample size, n=400
Sample proportion, p = 40 / 400
= 0.1
We use normal approximation, for this, we check that both np and n(1-p) >5.
Since n*p = 40 > 5 and n*(1-p) = 360 > 5, we can take binomial random variable as normally distributed, with mean = p = 0.1 and standard deviation = root( p * (1-p) /n )
= 0.015
For constructing Confidence interval,
Margin of Error (ME) = z x SD = 0.0294
95% confidence interval is given by Sample Mean +/- (Margin of Error)
0.1 +/- 0.0294 = (0.0706 , 0.1294)
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Answer:
A
Step-by-step explanation:
the mean is higher than kindergartens mean which shows its larger and the deviation is lower which shows less variation
Answer: 240 km
Step-by-step explanation:
From the graph :
50 miles = 80km
1 miles = 80/50 km
Therefore :
150 miles = 80/50 x 150
150 miles = 240 km
To
answer this set of questions, all we have to do is just to substitute the value
of x in F(x) to the given f(x) equation.
By
substitution and following PEMDAS rule:<span>
F(-1)=2(-1)³-3(-1)²+7=5</span>
F(1)=2(1)³-3(1)²+7=6
F(2)=2(2)³-3(2)²+7=11
Therefore the answers
are 5, 6 and 11.
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