Answer:
standard deviation = ±0.4667
Step-by-step explanation:
In Normal distribution, approximately 68% of all the data lie within 1 standard deviation from the mean, approximately 95% of all the data lie within 2 standard deviations from the mean and approximately 99.7% of all the data lie within 3 standard deviations from the mean.
Therefore, for a confidence interval of 99.7% the standard deviation of the x¯ must be 3 standard deviations from the mean,
3σ = ±1.4
σ = ±1.4/3
σ = ±0.4667
Therefore, 0.4667 is the standard deviation that x¯ must have so that 99.7% of all samples give an x¯ within 1.4 point of μ.
Answer:
4 lbs
Step-by-step explanation:
1/4 x 4 =1
1/2 x 2= 1
3/8 + 3/8 + 5/8 + 5/8 =16/8
16/8 =2
1+1+2=4
Answer:
Step-by-step explanation:
7/4 x 2/3= 7/2 x 1/3= 7/6 = 1 1/6
Alright, so you can try to study hard and gain a passing grade (A+) for the other two quarters.
Answer:
30000
Step-by-step explanation:
when dividing the powers, you subtract them.
