Answer:
D+0.21
Step-by-step explanation:
B) The lines intersect in two different points so the system has two solutions
Answer:
A - 18.5%
Step-by-step explanation:
1. subtract 6.75 from 8.00 = 1.25
2. multiply 6.75 by 18.5% = 1.25
Answer:
15
Step-by-step explanation:
We know that heart rate measurements are normally distributed with mean μ=110. We have to find standard deviation whereas minimum and maximum value of data are 65 and 155 beats per min.
We know that by the empirical rule, 99.7% of value lies within 3 standard deviation from the mean. We can see that 99.7% covers approximately all the data and we can assume that all the data lies within 3 standard deviation. Now we check for each value whether the interval μ±3*σ contains minimum value 65 and maximum value 155 beats per min or not.
A. 5
μ±3*σ
110±3*5
110±15
(95,125)
B. 15
μ±3*σ
110±3*15
110±45
(65,155)
We can see that for standard deviation=15 , μ±3*σ contains minimum value=65 and maximum value=155.
C. 90
μ±3*σ
110±3*90
110±270
(-160,380)
Thus, the standard deviation of the distribution is most likely to be 15.