Answer: 126
Step-by-step explanation:
As per given , we have
Prior Population proportion :
Significance level :
Critical value for 95% confidence interval (using the z-value table) =
Margin of error (maximum error):
Formula to find the sample size :
Therefore , the required minimum sample size = 126
Answer:
18
Step-by-step explanation:
Yur Welcome
Answer:
Step-by-step explanation: 500/2.50 = 200 so he will need to sell 200
Answer:
300tan43 - 300tan40
Step-by-step explanation:
Use tangent to find the height of the building:
tan40 = b/300
b = 300tan40
The use tangent to find the height to the top of the antenna:
tan43 = a/300
a = 300tan43
The antenna height = a - b
The answer is 0.88889, because:
Order of Operations-
1) Add 30 plus 6 to get 36
2) Subtract 32 from 36 to get 4
3) Divide 4 by 9 to get 0.4444444
4) Multiply 0.4444444 by 2 to get 0.888889
Good luck! <3