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(Choose 1 answer)
☐ A
(See picture)
A. (v)
B. (i)
C. (iv)
☐ E
D. (iii)
E. (ii)
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ASSUMIC τπατ DOUT
eing stuurca.
escape systems are
populations are normally distributed, with standard deviation σ = 3.5
centimeters per second and σ = 4.2 centimeters per second for
propellant 1 and propellant 2, respectively. Two random samples of
n=25_and_ŋ=18 specimens are tested, the sample mean burning
rates are = 28.1 centimeters per second and x = 27.5 centimeters per
second. A researcher would like to test the hypothesis that both
propellants have the same mean burning rate, at the 5% significance
level. State the null and alternative hypotheses and find the value of
the test statistic =₁.
(i) H₁
= 0, H₁: 1-10, == 0.982
(ii) H₁ μ-μ = 0, H₁₂
:
(iii) H₁ µ−μ ±0, H₁₂
(iv) H₁: µ−µ₂ = 0, H₁
(v) H₁
μ- μ₂ ±0, =₁ = 0.474
μ − µ₂ = 0, == 0.474
M − M₂ > 0, 0 = 0.982
= 0, H₁: 1 - 1 0, = = 0.495
FUO.Sh
sh the exam.
