Question

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 H0: 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?

n = 28,
t = −0.6
P-value = ?

Answer 1

@jim_thompson5910

Answer 2

I have a t table.

Answer 3

I'm assuming `t = −0.6` is the test statistic here?

Answer 4

yes

Answer 5

given by t = (Xbar - mu_o)/(S/sqrt(n))