Mathematics, 05.05.2020 15:55 ofcitsnijah
Tensile-strength tests were carried out on two different grades of wire rod. Grade 1 has 10 observations yielding a sample mean of 1085 and standard deviation of 52. Grade 2 has 15 observations yielding a sample mean of 1034 and standard deviation of 61. Assume the populations to be approximately normal with equal variances.
State and conclude your hypothesis at the 0.05 level of significance if grade 1 and grade 2 true means are equal each other?
Find P-Value.
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