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
<u>Answer:</u>
Option (C)
The new wall will be 42 foot long
<u>Explanation:</u>
Given a 14-foot wall in reality equals 2 inches in drawing
And a new wall has to be built that measures 6 inches in the drawing
According to the question
2 inches (in drawing) = 14-foot (in reality)
6-inces (in drawing) = = 42 foot
Therefore, the wall that measures 6 inches in the drawing will be 42 foot long in reality
The square root of 1,000,000 is 1,000.
hope it helps.
Answer:−1(2n + 1)
Step-by-step explanation:
Answer:
80 lemons
Step-by-step explanation:
Let x represent the amount of lemons that were on the tree.
We can use this to set up an equation:
Note that percentages can also be written as that number over 100.
Simplify the fraction.
Multiply both sides by 5
Divide both sides by 2
There were 80 lemons on the tree before he picked the lemons.