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)
Start from (19,8), take 2 minutes to travel 8 blocks back, end at (21,0).
Step-by-step explanation:
Answer:
y=2205
Step-by-step explanation:
5+y-5/34+3*7-6=45
combine terms on each side
y/49=45
multiply 49 on each side
y=2205
i hope this helps you
Answer:
100
Step-by-step explanation: its the same thing but in a different form
