You answer is the third option
Answer:
Median for a: 50 because it is in the middle of the points
Median for b: 35 because it is in the middle of the points.
Step-by-step explanation:
What i do is i write all the numbers out as shown in graph and cross one out on both sides untill there is one left.
IQR A: 15
IQR B: 15
Find the 25 percentile the. the 75 pecentile then subtract the numbers off from eachother.
Have an amazing day!
<u><em>PLEASE RATE!</em></u>
Answer: 3.16, 8, 9, 12
Step-by-step explanation:
= 3.16
2^3 = 2 * 2 * 2 = 8
|-9| = 9
1.2 x 10^1 = 1.2 * 10 = 12
3.16, 8, 9, 12
Answer:
(115.2642, 222.7358).
Step-by-step explanation:
Given data:
type A: n_1=60, xbar_1=1827, s_1=168
type B: n_2=180, xbar_2=1658, s_2=225
n_1 = sample size 1, n_2= sample size 2
xbar_1, xbar_2 are mean life of sample 1 and 2 respectively. Similarly, s_1 and s_2 are standard deviation of 1,2.
a=0.05, |Z(0.025)|=1.96 (from the standard normal table)
So 95% CI is
(xbar_1 -xbar_2) ± Z×√[s1^2/n1 + s2^2/n2]
=(1827-1658) ± 1.96×sqrt(168^2/60 + 225^2/180)
= (115.2642, 222.7358).
