Answer:
Critical value: 
The 90% confidence interval for the population mean bromide concentration is (0.376, 0.39).
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so . This value of z is the critical value
Now, find M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the mean subtracted by M. So it is 0.383 - 0.0066 = 0.376 cc/cubic meter
The upper end of the interval is the mean added to M. So it is 0.383 + 0.0066 = 0.39 cc/cubic meter
The 90% confidence interval for the population mean bromide concentration is (0.376, 0.39).
Answer:
C is an independent variable
Step-by-step explanation:
The input is the number you feed into the expression
Answer:
cuba. 30 dollars
canada. 60 dollars
india. 10 dollars
spain. 20 dollars
Step-by-step explanation:
first go to india then spain then cuba then canada
Step-by-step explanation:
- (8x-38°)=90° {because of being vertically opposite angles}
- 8x-38°=90°
- 8x=90°-38°
- 8x=52°
- x=52°/8
- x=6.5°
- z°+90°=180° {being linear pair}
- z°=180°-90°
- z°=90°
Answer: 20
Step-by-step explanation:
