Find the 98% confidence interval for the difference between two means based on this information about...

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Find the 98% confidence interval for the difference between two means based on this information about...

Find the 98% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. (Use conservative degrees of freedom.) (Give your answers correct to two decimal places.)

Sample	Number	Mean	Std. Dev.
1	18	40	30
2	17	28	25

Lower : ???

Upper: ???

math Statistics-And-Probability

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