Answer and Step-by-step explanation: The <u>critical</u> <u>value</u> for a desired confidence level is the distance where you must go above and below the center of distribution to obtain an area of the desired level.
Each sample has a different degree of freedom and critical value.
To determine critical value:
1) Calculate degree of freedom: df = n - 1
2) Subtract the level per 100%;
3) Divide the result by 2 tails;
4) Use calculator or table to find the critical value t*;
For n = 5 Level = 90%:
df = 4
t =
= 0.05
Using t-table:
t* = 2.132
n = 13 Level = 95%:
df = 12
t =
= 0.025
Then:
t* = 2.160
n = 22 Level = 98%
df = 21
t =
= 0.01
t* = 2.819
n = 15 Level = 99%
df = 14
t =
= 0.005
t* = 2.977
The critical values and degree of freedom are:
sample size level df critical value
5 90% 4 2.132
13 95% 12 2.160
22 98% 21 2.819
15 99% 14 2.977
Answer:
-3/2
Step-by-step explanation:
Perpendicular lines have slopes that are "negative reciprocals" of each other. This just means you flip them and make them negative. so 3/4 would become -4/3. i also want to add 1/2 would become -2/1 so -2 and a whole number like -3 would become 1/3, because I know that can be tricky. just know you can write a whole number a as a/1 to make it a fraction.
So 2/3 becomes -3/2 for perpendicular line.
4 x 12 x 2 = 96 people on two buses
70 degrees. All angles in a triangle must add up to 180 degrees so you add up angles you do know and subtract that from 180 then you get 70 and since opposite angles are equal that would make angle x 70 degrees aswell