The researcher is interested in determining whether there is evidence that the two processes yield different average errors. the population standard deviations are unknown but are assumed equal. if we test the null hypothesis at the 1% level of significance, what is the decision?

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.

Ithink your answer could be b

The only one i have to do is get a chance to get to know you better and i am so proud of you and your family a very happy and prosperous new year to you and your family a very happy and blessed day and a half of my day is the best i could do for youyou very much