Answer:
s
Step-by-step explanation:
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To solve this problem, we use the t statistic. The formula
for z score is:
z = (x – u) / s
where x is the sample value = 15.5 seconds or below, u is
the sample mean = 14.62 seconds, s is standard dev = 2.13 seconds
z = (15.5 – 14.62) / 2.13
z = 0.41
Using standard distribution tables at z = 0.41, the value
of P is:
P = 0.6591 = 65.91%
<span>Hence there is a 65.91% chance the runner will have less
than 15.5 seconds of time</span>
<span>
</span>
<span>answer:</span>
<span>c. 0.6591</span>
Answer:
45°
Step-by-step explanation:
360° is 100% (or 1, the whole)
so the ratio to use is 360:100 = x : 12.5
the proportionality between 360 and 100 must be the same as between the unknown value x and 12.5 (this is more or less the meaning in words), which leads to
x = (12.5*360)/100 = 45°
Another way of seeing it: 12.5% is 1/8 of 100% (therefore 1/8 of 360) so 360/8 = 45°
81.6 is the correct answer
Not your friend you cause if you add 5 ft+1 5/8 it’s gonna be more than 5.)