At a car racing track the speed of one car was recorded as 170.55miles per hour . Round the speed to the nearest tenth
1 answer:
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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.
Answer:
Your answer is 3.1
Step-by-step explanation:
Wherever you see j, substitute 5. Wherever you see k, substitute 3
1. Set up:
2. Multiply 4.7 * 5, to get 23.5
3. Multiply 6.8 * 3 to get 20.4
4. Subtract 23.5-20.4
5. Final anwer - 3.1
Hope this helps!