Two types of flares are tested and their burning times (in m…
Questions
Twо types оf flаres аre tested аnd their burning times (in minutes) are recоrded. The summary statistics are given below: Brand X Brand Y n=35 n=40 sample mean=19.4 min sample mean=15.1 s=1.4 min s=.8 min Use a .05 significance level to test the claim that the two samples are from populations with the same mean. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume the population standard deviations are equal. The alternative hypothesis is U1 [alt] U2 (type , or =/) The test statistic is: t=[test] (round to 3 decimal places) The p-value is: [pvalue] The conclusion about the original claim is: [claim] s = support the claim r = reject the claim f = fail to reject the claim n = not enough evidence to support the claim