Answer: f(c) = 9/5c-32
Step-by-step explanation:
Answer:
0.9128 = 91.28% probability that the mean of the sample would differ from the population mean by less than 2.8 points if 63 exams are sampled
Step-by-step explanation:
We have to evaluate the summation of (3n+2), with n ranging from 1 to 14. Let's write all the terms of the sum for each value of n:
n=1:
n=2:
n=3:
n=4:
n=5:
n=6:
n=7:
n=8:
n=9:
n=10:
n=11:
n=12:
n=13:
n=14:
Now, let's sum all the terms together, and we get:
<span>3.5y−12=1.5(y−2)
</span><span>3.5y−12=1.5y - 3
3.5y - 1.5y = -3 + 12
2y = 9
y =9/2
y = 4.5</span>
5.............................................................