Answer:
The minimum sample size required is 207.
Step-by-step explanation:
The (1 - <em>α</em>) % confidence interval for population mean <em>μ</em> is:
The margin of error of this confidence interval is:
Given:
*Use a <em>z</em>-table for the critical value.
Compute the value of <em>n</em> as follows:
![MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=2.576\times \frac{29}{\sqrt{n}} \\n=[\frac{2.576\times29}{3} ]^{2}\\=206.69\\\approx207](https://tex.z-dn.net/?f=MOE%3Dz_%7B%5Calpha%20%2F2%7D%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%5C%5C3%3D2.576%5Ctimes%20%5Cfrac%7B29%7D%7B%5Csqrt%7Bn%7D%7D%20%5C%5Cn%3D%5B%5Cfrac%7B2.576%5Ctimes29%7D%7B3%7D%20%5D%5E%7B2%7D%5C%5C%3D206.69%5C%5C%5Capprox207)
Thus, the minimum sample size required is 207.
Answer:
C. Time since the person starts walking is the input.
D. t represents the input.
Step-by-step explanation:
The distance a person walks, d, in kilometers, is a function of time, t, in minutes, since the walk begins.
So, we can write d = f(t)
If the person is moving with constant speed, then the above function will be linear.
Now the true statements are
C. Time since the person starts walking is the input.
D. t represents the input.
All the other statements are false. (Answer)
Answer:
585.98 miles
Step-by-step explanation:
We need to convert 1745 gallons to mL.
We know 1 gallons = 3785.41 mL
So 1745 gallons = 1745 * 3785.41 = 6,605,540.45 mL
Leaks are at 204.84 mL/sec, so it will take:
6,605,540.45/204.84 = 32,247.32 seconds
In hours, that is:
32,247.32/(60*60) = 8.96 hours
Now, since train is travelling at 65.4 miles per hour, in 8.96 hours, train will approximately travel:
65.4 * 8.96 = 585.98 miles
Answer:
I believe its G. 2x<8
Step-by-step explanation:
An open circle means that it is only less than OR more than, and since the arrow is pointing towards the left, it means that it is less than 8. I really hope this helps!
