Answer:
95% provides more information
Step-by-step explanation:
The confidence interval is obtained by using the relation :
Xbar ± Zcritical * σ/√n
(Xbar - (Zcritical * σ/√n)) = 5.22 - - - (1)
(Xbar + (Zcritical * σ/√n)) = 5.98 - - (2)
Adding (1) and (2)
2xbar = 5.22 + 5.98
2xbar = 11.2
xbar = 11.2 / 2 = 5.6
Margin of Error :
Xbar - lower C.I = Zcritical * σ/√n
Zcritical at 90% = 1.645
5.6 - 5.22 = 1.645 * (σ/√n)
0.38 = 1.645 * (σ/√n)
(σ/√n) = 0.38 / 1.645 = 0.231
Therefore, using the se parameters to construct at 95%
Zcritical at 95% = 1.96
Margin of Error = Zcritical * σ/√n
Margin of Error = 1.96 * 0.231 = 0.45276
C.I = xbar ± margin of error
C. I = 5.6 ± 0.45276
C.I = (5.6 - 0.45276) ; (5.6 + 0.45276)
C. I = (5.147 ; 6.053)
Hence, 95% confidence interval provides more information as it is wider.
This would be an exponential graph and non of the answers are exponential. but the graph would be f(x)=3^x
The correct answer is 25%
<h3>
What is Relative Frequency?</h3>
- The number of times an event occurs divided by the total number of events occurring in a given data.
<h3>How to solve the problem?</h3>
- This problem can be solved by following steps.
- The data of color and frequency is given in table.
- We need find the relative frequency for Purple
First calculate the the total number of frequency
18+20+10+16
= 64
The total number of frequency is 64
Hence the relative frequency of purple is 16/64
Therefore , relative frequency of purple is 1/4 = 0.25
Therefore 25% of purple candies are there
Learn more about Relative frequency here
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Answer:
157 square yards
Step-by-step explanation:
Area of circle:
A = pie r^2
A = 3.14 * 15^2
A = 706.5 square yards
< GPH = 80° --> 360/80 = 4.5
Area of sector GPH = 706.5 / 4.5 = 157 square yards
