Answer:
The first student, with 20 measurements, will have the more precise interval due to the larger sample size.
Step-by-step explanation:
Margin of error of a confidence interval:
The margin of error of a confidence interval has the following format:
In which z is related to the confidence level, s to the standard deviation and n to the sample size.
The margin of error is inversely proportional to the square root of the sample size, which means that a larger sample will lead to a lower margin of error, that is, to a more precise interval.
In this question:
One student will use 5 measurements, other 20. The first student, with 20 measurements, will have the more precise interval due to the larger sample size.
Order the fractions in ascending order:
{1/6,1/8,1/3}
={4/24,3/24,8/24}
=> in ascending order:
3/24,4/24,8/24
= 1/8, 1/6, 1/3
Answer:
63
Step-by-step explanation:
She finds her average resting heart rate to be 62 after 5 days.
That means, average of the 5 heart rate pulse=62
If the last day was 58 and all the other days were the same.
Let x be her pulse on the other days,
Then,
Her pulse on all the other days is 63.
Use basic multiplication: 7x (8) = 56x
or 7(8) x = 56x
Answer:
y = -4x+2
Step-by-step explanation:
y = x/4+5
y = 1/4(x+20)..........................1/4 is our gradient here
if parallel same gradient
if perpendicular, m1 *m2 = -1 ........where m1 is the gradient and m2 perpendicular gradient
1/4 * m2 = -1
m2 = -4
<em>if passes through ( 0,2)</em>
y-2 = -4(x-0)
y = -4x+2
