Oh man stands on his balcony 120 feet above the ground he looks at the ground this site line forming a angle of 50° with the bui
2 answers:
Answer:
The bus stop is approximately 186.687 feet far from the man.
Step-by-step explanation:
Here, the given function that shows the distance from the man to any object in the ground,
Where, is the angle of his site line.
Given,
The site angle of man is 50° when he sees a bus stop,
That is,
Hence, the distance of bus stop from the man is,
Hence, the bus stop is approximately 186.687 feet far from the man.
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Answer:
And we can use the following excel code to find it:"=2*(1-NORM.DIST(4.21,0,1,TRUE)) "
With the p value obtained and using the significance level assumed for example we have
so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the percentage 1 is significantly different from the percentage 2.
D) Are statistically different.
Step-by-step explanation:
The system of hypothesis on this case are:
Null hypothesis:
Alternative hypothesis:
Or equivalently:
Null hypothesis:
Alternative hypothesis:
Where and
represent the percentages that we want to test on this case.
The statistic calculated is on this case was Z=4.21. Since we are conducting a two tailed test the p value can be founded on this way.
And we can use the following excel code to find it:"=2*(1-NORM.DIST(4.21,0,1,TRUE)) "
With the p value obtained and using the significance level assumed for example we have
so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the percentage 1 is significantly different from the percentage 2.
And the best option on this case would be:
D) Are statistically different.
I can burly read that but the fraction should be right
