Two types of flares were tested for their burning times (in minutes).Sample results are given below. $\text { Brand } \mathrm { X }$ $\text { Brand } \mathrm { Y }$ n = 35 n = 40 $\overline{x} $ = 19.4 $\overline{x} $ = 15.1
s = 1.4 s = 0.8
Refer to the sample data to test the claim that the two populations have unequal means.Carry out the test with a 1% significance level.

Question

Quizplus · Accepted Answer

The Answer is H0: μ1 - μ2 = 0 HA: μ1 - μ2 ≠ 0 Test statistic t = 16.025,P-value = 9.2162 ×

10 ^ { - 22 }

,DF = 52.5 Reject the null hypothesis.There is strong evidence that the two types of flares have different mean burn times.Based on these data,it appears that Brand X flares have longer burning times than Brand Y flares on average.

Two Types of Flares Were Tested for Their Burning Times Brand X\text { Brand } \mathrm { X } Brand X

Two Types of Flares Were Tested for Their Burning Times $\text { Brand } \mathrm { X }$