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Table below shows the summary statistics (sample mean, sample standard deviation and sample size) ofprices of diamond with weights 0.99 carats and 1 carat. If
Table below shows the summary statistics (sample mean, sample standard deviation and sample size) ofprices of diamond with weights 0.99 carats and 1 carat. If we assume the conditions for inference were met , then calculate the 95% confidence intervalfor the average difference between theprices of 0.99 and 1 carat diamonds.Use t-distribution and the criticalt value of 2.07 when degrees of freedom, df=n-1=22
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(-4, -7.49)
(-3.38, -3.5)
(-4, 7.49)
(-21.33, -3.27)
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