An insurance agent says that the mean cost of insuring a two year old sedan is less than $1200. a random sample of 8 similar insurance quotes has a mean cost of $1125 and a standard deviation of $55. is there enough evidence to support the agents claim at a= 0.10

a) state the null and alternative hypotheses and label claim

b) state the type of tail and draw a graph of the area

c) find p.

d) compare a and p. make a decision

why do wages differ across industries

step-by-step explanation :

micro economists are concerned with economics on an industry or individual firm basis.

macro economists are concerned with national and international level

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

step-by-step explanation:

if x = 1, then the answer is 3.5