3. Six less than twice a number is 17. Which equation could be used to determine the
1 answer:
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Answer:
(1)
Step-by-step explanation:
We will try:
(1) y = x => 2 = 2 (seems legit)
(2) y = 4x => 2 = 32 (nope)
(3) y = x - 6 => 2 = 2 (yes but actually no because it is proportional relationship)
(4) y = x - 2 => 2 = 2 (like the above)
Variance of a continuous random variable X is defined as
Standard deviation is defined as
Hence standard deviation is the positive square root of variance.