Zaire, Manny, Richard, Navid and Gregory found a rope that was 271.5 feet long. If they cut the rope into equal pieces, what was
1 answer:
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<h3>Given :-</h3>
- Pranav ran 20.3 km more than Branda
- Pravin ran 38.6 km
To find :
- No. of kilometers did Brenda run.
- No. of kilometers ran by Brenda be x.
Equation formed:-
Total distance covered by Pravan = More distance covered by Pravan + distance covered by Brenda.
Therefore:-
Write the equation
When we transfer 20.3 to left side the positive sign (+) will change into negative sign (–)
Arrange the equation because x is always represented at left side.
After subtracting 38.6 with 20.3 we will get result as 18.3 .
Answer:
Hence the correct option is option b) Yes, the upper level of one standard deviation is 72.
A score of 74 is not within one standard deviation of the mean.
Step-by-step explanation:
Here the given details are,
Mean = 68
SD = 4
Distribution is normal.
Z-score for x = 74 is given as below:
So, the score of 74 is 1.5 standard deviations from the mean.
Therefore the score is not lies between 64 and 72.
Yes, the upper level of one standard deviation is 72.