Answer:
($47.245; $61.575)
Step-by-step explanation:
Mean sample repair cost (X) = $54.41
Standard deviation (s) = $28.89
Sample size (n) =44
Z-score for a 90% confidence interval (z) = 1.645
The confidence interval, assuming a normal distribution, is given by:
Applying the given data, the lower (L) and upper (U) bounds of the interval are:
The confidence interval is I = ($47.245; $61.575)
Answer:(3,0)
Explanation:To find the x substitute 0 in for y,7x+3*0=21.Next,multiply 3 and 0,and that gives you 0,7x+0=21 .After you do that you need remove 0 because when you add and subtract zero the quantity doesn’t change,7x=21.Lastly,divid both sides of the equation by 7,and that gives you x=3.
Answer:
5 ft below the level of the back of the truck
Step-by-step explanation:
+8 -13 = -5
Relative to the back of the truck, the final position of the pallet is 5 ft below where it started.
Sorry but I don’t know what u want. There is no question written.
Answer:
1. There is a weak positive correlation.
Step-by-step explanation:
The correlation coefficient shows the relation of points in a data set. It is between 0 and 1 or 0 and -1. If the coefficient is closer to 0 then the correlation is weak. So, since 0.35 is closer to 0 than 1 it must be a weak correlation. Additionally, because it is positive the correlation must also be positive. A positive correlation means that the line of best fit will have a positive slope.
