Anull hypothesis can only be rejected at the 5% significance level if and only if:

(a) a 95% confidence interval includes the hypothesized value of the parameter
(b) a 95% confidence interval does not include the hypothesized value of the parameter
(c) the null hypothesis is void
(d) the null hypotheses includes sampling error

Option (B) a 95% confidence interval does not include the hypothesized value of the parameter              

Step-by-step explanation:

Alpha, α = 0.05

We conduct a hypothesis test at 5% significance level.

The null hypothesis will be rejected when

Option (B) a 95% confidence interval does not include the hypothesized value of the parameter

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

570, the answer is 570, hope it