H0: = 20 v/s Ha : > 20
a) z = 3.3 , = 0.05
p value = p ( z > 3.3 ) = 1 - p ( z 3.3 ) = 1 - 0.9995 = 0.0005
Here p value < (0.05 )
Reject null hypothesis . There is sufficient evidence to conclude that new paint has a reflectometer reading higher than 20.
b) z = 1.6 , = 0.01
p value = p ( z > 1.6 ) = 1 - p ( z 1.6 ) = 1 - 0.9452 = 0.0548
Here p value > .
Do not reject null hypothesis. There is not sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20.
c) z = -0.5, = 0.10
p value = p ( z > -0.5 ) = 1 - p ( z -0.5 ) = 1 - 0.3085 = 0.6915
Here p value >
Do not reject null hypothesis. There is not sufficient evidence to conclude that the new paint has a reflectometer reading higher than 20.
/3 peiets The paint used to make ines on roads must reflect enough-ght to be clearly...
The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let μ denote the true average reflectometer reading for a new type of paint under consideration A test of Ho: μ 20 versus Ha: μ > 20 will be based on a random sample of size n from a normal population distribution. What conclusion is appropriate in each of the following situations? (Round your P-values to three decimal places.) (a) z3.3, a-0.05...
The paint used to make lines on roads must reflect enough light to be clearly visible at night. Lot u denote the true average reflectometer reading for a new type of paint under consideration. A test of Ho: μ-20 versus Ha μ > 20 will be based on a random sample of size n from a normal population distribution what core us is appropriate in each of the following situations? (Round your P-values to three decimal places.) (a) ,, =...
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The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let ? denote the true average reflectometer reading for a new type of paint under consideration. A test of H0: ? = 20 versus Ha: ? > 20 will be based on a random sample of size n from a normal population distribution. What conclusion is appropriate in each of the following situations? (Round your P-values to three decimal places.) (a) n =...
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