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aivan3 [116]
2 years ago
4

NEED HELP ASAP WILL GIVE BRAINLIEST IF CORRECT

Mathematics
2 answers:
Iteru [2.4K]2 years ago
6 0
What’s the question? :) i think you forgot to include the picture
DerKrebs [107]2 years ago
4 0
What’s your question...?
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The approximate line of best fit is given by the equation y=40x-1800. Based on this trend which of the following best predicts t
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8 0
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Exhibit 11-2 We are interested in determining whether the variances of the sales at two music stores (A and B) are equal. A samp
Fiesta28 [93]

Answer:

Option A , should not be rejected

Step-by-step explanation:

From the question we are told that:

Sample 1 n=25

Standard deviation 1 \sigma_1=30

Sample 2 n=16

Standard deviation 2 \sigma_2=20

Level of  confidence \alpha=95\%=>0.95

Generally The Hypothesis are given as

 H_0:\sigma_1^2=\sigma_1^2

 H_1:\sigma_1^2\neq \sigma_1^2

Generally the equation for test Statistics is mathematically given by

 T=\frac{\sigma_1^2}{\sigma_2^2}

 T=\frac{30^2}{20^2}

 T=2.25

Therefore

Critical Value

 X=(\alpha,df_1)

 X'=(\alpha,df_2)

Where

 df=n-1

Therefore

 X=(0.95,24)

 X'=(0.95,15)

From Table

 T_{Critical}=T_x,T_{x'}

 T_{Critical}=0.41,2.701

Therefore

 T_x

Hence,We fail to reject the Null Hypothesis H_0

Option A , should not be rejected

3 0
1 year ago
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