Suppose that 8 short range rockets of one kind have a mean target error of x₁ = 98 metres with a standard deviation of s₁ = 18 metres while 10 rockets of another kind have a mean target error of x₂ = 76 with standard deviation of s₂ = 15 metres. Assume that the target errors for the two types of rockets are normally distributed and that they have a common variance. Find the p-value of the test. O 0.2 O 0.1 O 0.5 O 0.4 O 0.3
