To determine the answer to this item, we first calculate the z-scores of the given data point through the equation,
z-score = (data point - mean) / standard deviation
For 5:
z-score = (5 - 7) / 1.7 = -1.176
This translates to a percentile of 11.97.
For 10:
z-score = (10 - 7) / 1.7 = 1.76
This translates to a percentile of 96.08.
The difference between the percentiles is 84.11. Thus, 84% of the students sleep between 5 to 10 hours.
Answer:
95 degrees
Step-by-step explanation:
1/2 of a circle is 180 and 180-103=77 and on the other half 72 + 13= 85 and add THAT TO 103 to get 188+77= 265 and 360-265= 95
Answer:
B. 108
Step-by-step explanation:
a straight angle is 180 degrees.
180-72=108
The margin of error is 0.97849
we are given
mean=235
so,
standard deviation =7.5
so,
we know that
ME=2*standard error
and
If confidence level is 95%, then we can multiply by 1.96
so, we can multiply by 2 to get ME
now, we can use marginal error formula
now, we can plug values
and we get
Answer:
78
Step-by-step explanation:
