Answer:
15.85%
Step-by-step explanation:
Empirical rule states that for a normal distribution, 68% of the data falls within one standard deviation, 95% falls within two standard deviation and 99.7% falls within three standard deviation.
Given mean (μ) = 41 months, standard deviation (σ) = 5 months
One standard deviation = μ ± σ = 41 ± 5 = (36, 46)
Therefore 68% falls within 36 months and 41 months
Two standard deviation = μ ± 2σ = 41 ± 2(5) = (31,51)
Therefore 95% falls within 31 months and 51 months
Three standard deviation = μ ± 3σ = 41 ± 3(5) = (26, 56)
Therefore 99.7% falls within 26 months and 56 months
The percentage of cars that remain in service between 46 and 51 months = 32%/2 - 0.3%/2 = 16% - 0.15% = 15.85%
Answer:
X = 57
3x-6 = 165
Step-by-step explanation:
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2 tens, 6 ones because the 2 is in the 10s place and the 6 is in the ones
Answer:
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Answer:
3.5
Step-by-step explanation:
mean = <u>F1X1+FnXn</u>
total number of students
mean=<u>1*0+1*1+2*2+3*6+4*4+5*3+6*2</u>
1+1+2+6+4+3+2
mean=3.5
