<span>How can you use addition and subtract to put together and separate measures of an angle and its parts
Adding and Subtracting angles can be put this way.
Complementary angles can be formed by two angles with total of 90 degrees.
</span><span>Supplementary angles can be formed by two angles with total of 180 degrees.
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X + Y = 90 degrees
Y = 90 - X
X = 90 - Y
X + Y = 180 degrees
Y = 180 - X
<span>X = 180 - Y</span>
The empirical rule states that at 95% the measurements would be within 2 standard deviations of the mean.
You are given a mean of 68 inches and a standard deviation of 4.
2 times the standard deviation = 2 x 4 = 8
So 95% of the heights would be between 68-8 = 60 inches and 68+8 = 76 inches.
Answer:
There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are different
Step-by-step explanation:
Given that in previous tests, baseballs were dropped 24 feet onto a concrete surface, and they bounced an average of 92.82 inches
But new balls showed mean of 92.6 inches with s = 1.72 inches
Sample size = 23
Since sample size is less than 30 and population std deviation is not know we use t test
(Two tailed test at 5% significance level)
Mean difference =
Std error of sample mean = s/sqrt n =
Test statistic t = mean diff/std error = -3.402
df = 23-1 =22
p value = 0.002559
since p value <5% we reject H0
There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are different
Answer:
7
Step-by-step explanation:
Answer:
your answer is c they both have the same answer which is x= 1/3