Answer:
A. 36%.
Step-by-step explanation:
Total number of pets = 24 + 18 + 5 + 3
= 50,
So the percentage who prefer cats
= 18/50 * 100
= 18 * 2
= 36%.
Answer:
%
Step-by-step explanation:
![17+23=40](https://tex.z-dn.net/?f=17%2B23%3D40)
in total.
, 24 students trying out.
24 of 40 as a percent![=60](https://tex.z-dn.net/?f=%3D60)
Answer:
(8.213 ; 8.247)
Step-by-step explanation:
Given the data :
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Dia. 8.23 8.16 8.23 8.25 8.26 8.23 8.20 8.26 8.19 8.23 8.20 8.28 8.24 8.25 8.24
Sanple size, n = 15
Sample mean, xbar = Σx / n = 123.45 / 15 = 8.23
The sample standard deviation, s = √(x -xbar)²/n-1
Using calculator :
Sample standard deviation, s = 0.03116
s = 0.031 (3 decimal places)
The 95% confidence interval :
C.I = xbar ± (Tcritical * s/√n)
Tcritical at 95%, df = 15 - 1 = 14
Tcritical = 2.145
C.I = 8.23 ± (2.145 * 0.031/√15)
C.I = 8.23 ± 0.0171689
C.I = (8.213 ; 8.247)
Answer:
![\frac{5}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B2%7D)
Step-by-step explanation:
recall for a line whose equation is
y = mx + b,
the slope of this line is m
the slope of a line that is perpendicular to this line is -![\frac{1}{m}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bm%7D)
in this case,
m = -![\frac{2}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D)
hence -
=![\frac{5}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B2%7D)
Answer:
a is the correct answer...