Answer:
And the 90% confidence interval would be between [566.80 and 579.20]
Step-by-step explanation:
Information given
represent the sample mean
population mean (variable of interest)
s=22 represent the sample standard deviation
n=36 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
The degrees of freedom are given by:
The Confidence level is 0.90 or 90%, the significance would be and , and the critical value for this case would be
And replacing we got:
And the 90% confidence interval would be between [566.8033 and 579.1967]
Answer:
504 ft
Step-by-step explanation:
Perimeter = 2(width) + 2(length)
Convert yards to feet
1yard=3feet
8yards=?
8*3/1 = 24feet
84 = 2(w) + 2(24)
84 = 2w + 42
84 - 42 = 2w
42 = 2w
w = 21
Area = 1 * w
= 21 * 24
= 504 ft
Answer:
x tan q
Step-by-step explanation:
Refer the attached figure
An observer on the ground is x meters from the base of the launch pad of a rocket i.e. BC = x
The height of the rocket is AB
The observer sees its tip at an angle of q° from the horizontal.i.e.∠ACB = q°
In ΔABC
We will use trigonometric ratio
So, the height of the rocket is x tan q.
So, Option C is correct.
Hence the tip of the rocket is x tan q far above the ground
Answer:
$42.09
Step-by-step explanation:
Total cost = 3.45*12.2 = $42.09
As you know, 1/2 is .5. 7/10 is 70% as 10 would be 100%, so go back to .5 and that translates to 50%.