What are the values of a,b,c,and d
1 answer:
Answer:
see explanation
Step-by-step explanation:
Given that and
are parallel lines then
a = 35 ( alternate angle )
The sum of the angles in a triangle = 180°, thus
b = 180 - (90 + a) = 180 - (90 + 35) = 180 - 125 = 55
b and c form a straight angle, thus
c = 180 - b = 180 - 55 = 125
d = 55 ( alternate to b )
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Step-by-step explanation:
information given
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represent the population standard deviation
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
z would represent the statistic
represent the p value for the test
Hypothesis to test
We want to test if the true mean is less than 12, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic is given by:
(1)
Replacing the info given we got:
We can replace in formula (1) the info given like this: