Select the correct answer. Shape 1 and shape 2 are plotted on a coordinate plane. Which statement about the shapes is true? A. S
1 answer:
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Complete Question
Answer:
a
b
Step-by-step explanation:
From the question we are told that
The sample size is n = 60
The first sample mean is
The second sample mean is
The first variance is
The first variance is
Given that the confidence level is 95% then the level of significance is 5% = 0.05
Generally from the normal distribution table the critical value of is
Generally the first standard deviation is
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=>
Generally the second standard deviation is
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=>
Generally the first standard error is
Generally the second standard error is
Generally the standard error of the difference between their mean scores is mathematically represented as
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=>
Generally 95% confidence interval is mathematically represented as
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=>