Please help me and show all work thank you very much 20 points.
2 answers:
Since the angle of depression is 10 degrees, the interior angle adjacent to the angle of depression is 90-10, or 80 degrees
Since the cosine the adjacent angle divided by the hypotenuse, we can use the cosine to help us solve this question. Divide 500 by the cosine of 80 degrees.
This may seem large, but this should be the answer for x. I hope this helps! ;)
Since the cosine the adjacent angle divided by the hypotenuse, we can use the cosine to help us solve this question. Divide 500 by the cosine of 80 degrees.
This may seem large, but this should be the answer for x. I hope this helps! ;)
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Answer:
a)
b)
Step-by-step explanation:
We have to build appropriate null and alternate hypothesis for the given scenarios.
a) Population mean, μ = $62,500 per year
The market research wants to find whether the mean household income of mall shoppers is higher than that of the general population.
We would use one-tail(right) test to perform this hypothesis.
b) Population mean, μ = 2.6 hours
The company want to know the average time to respond to trouble calls is different or not.
We would use two-tail test to perform this hypothesis.