Answer:
-(sqrt2)
Step-by-step explanation:
Answer:
The slope-intercept equation:
Step-by-step explanation:
Since you already have the <u>y-intercept</u> and the <u>slope,</u> use the <u>point slope Formula</u> to help you solve and get it in <u>slope-intercept form</u>:
-Apply both the <u>y-intercept</u> and the <u>slope</u> for the formula:
-Then, solve the equation:
-Result:
Answer:
$393.50+/-$19.72
= ( $373.78, $413.22)
Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = $393.50
Standard deviation r = $50.30
Number of samples n = 25
Confidence interval = 95%
z value(at 95% confidence) = 1.96
Substituting the values we have;
$393.50+/-1.96($50.30/√25)
$393.50+/-1.96($10.06)
$393.50+/-$19.7176
$393.50+/-$19.72
= ( $373.78, $413.22)
Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)
Answer:
-2 < x < 4
Step-by-step explanation:
This inequality has 3 sides.
Lets ADD 4 to all sides:
-8 < 2x - 4 < 4
+4 +4 +4
-4 < 2x < 8
Now we divide all sides by 2, to get:
-4 < 2x < 8
-4/2 < 2x/2 < 8/2
-2 < x < 4
The inequality is solved. To the value of x ranges from x = -2 to x = 4. This is the answer.