Answer:
Step-by-step explanation:
a) While the mean is below 4 the standard deviation tells us that there is a pretty high chance for the value to be above 4. One standard deviation away is 1.79 - 5.65. We are concerned with things over 4 so we'll look at the upper half, which is 3.72 - 5.65. Being one standard deviation to the right means there is a 34.1% chance of the readings being in this range. And there is even chances of it being slightly higher, though that is comparatively low. But even as low as 10% is usually considered too high a chance to risk. If you don't understand how the standard deviation got me those percents let me know.
b) alternative hypothesis is always the option where we want to prove it. So we want to prove the concentration is 4 or above. So the null is less than 4 and the alternative is greater than or equal to 4. Do you know the correct symbols? if not I can get those written out. As for the p value we need the confidence level for the question, do you have that?
Answer:
30
Step-by-step explanation:
Answer:
6. LNO and NLM are alt. Interior angles.
7. OLN and MNL are alt. Interior angles
Both are def of alt interior angles
8. LNO = NLM. CPCT
Answer:
The area is multiplied by 4
Step-by-step explanation:
4x4=16 (area 1)
4(x2)x4(x2)=64 (area 2 (with the measurements doubled)
64/16=4
The answer is the first expression which is 4v20
