Answer: 12 out of 24, so 1/2
Step-by-step explanation:
Add 3 and 9 together since those are the desired colors, then put it out of the total (24) and simplify the fraction down. Hope this helps!
Answer:
5.5
Step-by-step explanation:
Of means multiply
13.75 * 2/5
27.5/5
5.5
a. The standard error is equal to the standard deviation divided by the square root of the sample size:
SE = (23 ppm)/√18 ≈ 5.42 ppm
b. The t statistic is given by the difference between the true and sample means, divided by the standard error:
t = (192 ppm - 180 ppm)/SE ≈ 2.21
c. The p-value is approximately 0.0204.
d. Since p < 0.05, the difference is significantly different, so we reject the null hypothesis.
e. A type I error might have occurred, since it's possible that the null hypothesis was true, but we ended up rejecting it.
Answer:
y=x to the second power -8x+12
Step-by-step explanation:
Answer:
35x^2 - 112x - 364
it's probably wrong since I've only expanded the brackets
