Answer:
The critical value can be founded in the normal standard distribution table using the value of and we got . Replacing the info given we got:
Step-by-step explanation:
For this case we have the following info given:
represent the population deviation
represent the sample mean
represent the sample size
And we want to find the margin of error for a confidence level of 95%. So then the significance level would be and . The margin of error is given by:
The critical value can be founded in the normal standard distribution table using the value of and we got . Replacing the info given we got:
Answer:
Step-by-step explanation:
The area of a parallelogram of width W and length L is A = W*L.
The area of a trapezoid of width W and different side lengths L1 and L2 is
A = W(L1 + L2)/2.
To find the area of the trapezoid, take the average of the lengths L1 and L2 of the two parallel sides and call the result L. Then apply the formula for the area of a parallelogram, given above).
Answer:
x=< - 29/15 or x > 31/15
Step-by-step explanation: