Answer:
2. Line RT = 11x - 17, Line PT= 5x + 13
11x - 17 = 5x + 13
11x - 17 = 5x + 13
-5x. -5x
6x - 17 = 13
+17. +17
6x= 30
÷6. ÷ 6
x = 5
(B). According to the rules of a parallelogram, if angle S is 50°, the angle on the same side will be supplementary to it. So, angle R equals 130° and angle Q is also 50°.
2500 divided by 100 is 25. If you multiply 25 times 3 you'll get 75. Repeat those steps (answers will be different each time) five times. You will get the answer.
Don't want to do that? OK! I'll do it for you!
Answer: <span>2577.31958575</span>
<h2><em><u>
Answer: 628.3</u></em></h2>
Step-by-step explanation: Tenth is always the first decimal point so 1 rounds down, making it 628.3.
Answer:
D. 30
Step-by-step explanation:
Having a population that doesn't follow normal distribution (skewed) can still have sampling distribution that is completely normal. This fact is presented in the Central Limit Theorem.
Central Limit Theorem: states that we can have a normal distribution of sample means even if the original population doesn't follow normal distribution, we just need to take a large sample.
So how much sample size do we need?
There is no straight forward answer to this rather we have to analyse the situation closely!
1. If the population distribution is already normal then a smaller sample size would be enough to ensure normal distribution.
2. If the population distribution is very skewed than a larger number of sample size is needed to ensure normal distribution. The rule of thumb is to take sample size equal to or more than 30 to be on safer side. This is the case in this problem hence option D fits the best.
