Step-by-step explanation:
P(A or B) = P(A) + P(B) − P(A and B)
P(A or B) = 6/36 + 5/36 − 0/36
P(A or B) = 11/36
Complete question :
A zoologist is interested in whether climate affects how high kangaroos can jump. In a random sample of gray kangaroos from an Australian forest, he found the mean jump height was x¯=286 inches with a margin of error of 15 inches.
Construct a confidence interval for the mean jump height of gray kangaroos.
Answer:
(271, 301)
Step-by-step explanation:
Given that:
Mean (x¯) = 286
Margin of Error = 15 inches
The confidence interval :
(Mean - Margin of Error), (mean + margin of error)
(286 - 15), (286 + 15)
(271, 301)
Hence confidence interval equals : (271, 301)
A group of friends spent 1, 0, 2, 3, 4, 3, 6, 1, 0, 1, 2, and 2 hours online last night. What are the 1st and 3rd quartiles for
Ostrovityanka [42]
Arrange the numbers from smallest to largest:
0,0,1,1,1,2,2,3,3,4,6
Split the data in the middle, since there is an odd amount of numbers take an even amount on each side:
0,0,1,1,1,2,2,3,3,4,6
Lower half: 0,0,1,1,1
Higher half: 2,3,3,4,6
1st quartile is the middle value of the lower half: 1
3rd quartile is the middle value of the higher half: 3
x is the middle line because it divides each catheter into two equal parts.
==> x is half the hypotenuse.
