Answer:
A sample of 601 bricks will be needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
95% confidence level
So , z is the value of Z that has a pvalue of , so .
How large a sample will we need?
A sample of n bricks will be needed.
n is found when M = 0.04.
We have no estimate for the proportion of defective bricks, so we work with the worst case scenario, which is
Rounding up
A sample of 601 bricks will be needed.
Answer:
Step-by-step explanation:
1. Federal Debt=18 trillion dollars.
=18,000,000,000,000
2. Population =320 million people.
=320,000,000
3. Federal Debt Per Capita
Debt Per Capita =Debt/Population
Therefore:
Federal Debt Per Capita
salesman c makes the most 2700
salesman b makes the second most with 2665
salesman c makes the least with 1680
answer salesman c
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Answer:
The value of given trigonometrical expression is cos²x + sin²x = 1
Step-by-step explanation:
Given trigonometrical expression as :
( ) - sec x = tan x
Or, ( ) = tan x + sec x
or, ( ) = ( ) + ( )
or, ( ) = ( )
Now, cross multiplying both side
I.e (cos x) × (cos x) = ( 1 - sin x ) × ( 1 + sin x )
or, cos²x = 1 - sin² x
or, cos²x + sin²x = 1
So, Value of expression is cos²x + sin²x = 1
Hence The value of given trigonometrical expression is cos²x + sin²x = 1 answer