To work out the Circumference of a circle, we must o the calculation
πd
π x d
If we fill in the information we know
π x 10.4
3.14 x 10.4 (to 2 d.p.)
↓
32.656 (units)
Since Density = mass/ volume (d = m / v), and assuming the 15 fish weigh 1 gram each - if weight of each fish isn't given - (making that a total of 15 grams),
D = m / v
0.3 = 15 / v
v = 15 / 0.3 = 50 ft cubed
Hope this answers your question correctly :)
<span />
Answer:
Hello,
d.
Step-by-step explanation:
-x + 2 ![x \geq 1](https://tex.z-dn.net/?f=x%20%5Cgeq%20%201)
x + 1 x < 1
Answer: No, this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.
Step-by-step explanation:
Since we have given that
n = 1400
x = 154
So, ![\hat{p}=\dfrac{154}{1400}=0.11](https://tex.z-dn.net/?f=%5Chat%7Bp%7D%3D%5Cdfrac%7B154%7D%7B1400%7D%3D0.11)
and p = 0.10
So, hypothesis would be
![H_0:\hat{p}=p\\\\H_a:\hat{p}>p](https://tex.z-dn.net/?f=H_0%3A%5Chat%7Bp%7D%3Dp%5C%5C%5C%5CH_a%3A%5Chat%7Bp%7D%3Ep)
So, the test statistic value would be
![z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.11-0.10}{\sqrt{\dfrac{0.1\times 0.9}{1400}}}\\\\z=\dfrac{0.01}{0.008}\\\\z=1.25](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B%5Chat%7Bp%7D-p%7D%7B%5Csqrt%7B%5Cdfrac%7Bp%281-p%29%7D%7Bn%7D%7D%7D%5C%5C%5C%5Cz%3D%5Cdfrac%7B0.11-0.10%7D%7B%5Csqrt%7B%5Cdfrac%7B0.1%5Ctimes%200.9%7D%7B1400%7D%7D%7D%5C%5C%5C%5Cz%3D%5Cdfrac%7B0.01%7D%7B0.008%7D%5C%5C%5C%5Cz%3D1.25)
At 5% level of significance,
critical value would be 1.96.
Since 1.96>1.25.
so, we will accept the null hypothesis.
Hence, no, this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.