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6. Consider again the data shown in Table 12–20. Compute 95% confidence intervals for the mean...

6. Consider again the data shown in Table 12–20. Compute 95% confidence intervals for the mean price of each drug using . Generate a graphical display showing the means and 95% confidence intervals for the mean drug prices for each drug group. Based only on your figure, which of the drugs have statistically significantly different prices?

TABLE 12–20 Mean and Standard Deviation of Prices of Six HIV Drugs

Drug

Mean Price

Standard Deviation in Price

A

$3,200

$856

B

$6,800

$925

C

$11,352

$754

D

$3,945

$920

E

$2,120

$645
Math   Statistics-And-Probability   
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