Find the p-value for a left-tailed hypothesis test with a test statistic of z= -1.55. decide whether to reject upper h 0h0 if the level of significance is α=0.10.

p-value = round to four decimal places asneeded

0.0606

Step-by-step explanation:

Given that test statistic for a left tailed test is

z=-1.55

Significance level = 0.10

let us find p value from z value

p value for left tailed is

0.060571

Since p value < 0.10 our alpha, we reject null hypothesis.

p value = 0.0606

Conclusion:  Reject null hypothesis.

There is statistical evidence to show that sample mean is less than population mean.

i dont know

step-by-step explanation:

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.