Explaining supposition of normal population is doubtful

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Reference no: EM1321690

Q1) Manufacturer of airport baggage-scanning machine claims it can handle average of 530 bags per hour. At a=.05 in left tailed test, would sample of 16 randomly selected hours with mean of 510 and standard deviation of 50 point out that manufacturer's claim is overstated? Select the suitable hypothesis.

H₀: μ ≥ 530, reject H₀ if t < -1.753

H₁: μ ≥ 530, reject H₁ if t < -1.753

H₀: μ < 530, reject H₀ if t > -1.753

H₁: μ < 530, reject H₁ if t > -1.753

b) Why might supposition of normal population be doubtful? Problem arises when:

i) Too many bags are processed.

ii) Low numbers of bags are processed.

iii) A perfect symmetric distribution will happen.

iv) A skewed distribution will arise.

Reference no: EM1321690

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