Question

3.

Carbon Monoxide (CO) is a colourless and odourless gas. Even at low levels of exposure, carbon monoxide can cause serious health problems. A home is considered safe if the mean CO concentration is 5.2 parts per million (ppm) or lower. We take a random sample of 8 readings in various locations of a home. These readings have a mean of 5.4 ppm and a standard deviation of 0.35 ppm. We would like to conduct a hypothesis test at the 1% level of significance to determine whether the home is unsafe. The P-value for the appropriate hypothesis test is:

Question 40 options:

	between 0.10 and 0.15
	between 0.025 and 0.05
	between 0.05 and 0.10
	between 0.02 and 0.025
	between 0.15 and 0.20

Answer 1

3)

One sample T summary hypothesis test:
μ : Mean of population
H₀ : μ = 5.2
H_A : μ ≠ 5.2

Hypothesis test results:

Mean	Sample Mean	Std. Err.	DF	T-Stat	P-value
μ	5.4	0.12374369	7	1.6162441	0.1501

P-value is :

between 0.15 and 0.20