Answer:
+/- 1.9983
Step-by-step explanation:
The critical values for a confidence interval for the population mean, with population standard deviation not known, are obtained from the student's t distribution.
The sample size is given as 64. The degrees of freedom will thus be;
sample size - 1 = 64 - 1 = 63
The confidence level is given as 95%. The level of significance will thus be;
100 - 95 = 5%.
The area in the right-tail will thus be 2.5%. Therefore, we looking for a t-value such that the area to its right is 2.5% and the degrees of freedom being 63. From the t-tables we have;
+/- 1.9983
Answer:
width is 27 yards and length is 123 yards
Step-by-step explanation:
Perimeter of a rectangle is 2(L + W).
If length is 96 more than width, then we know L = 96 + W
Since we also know the perimeter, we can put them into an equation and solve for the length and width:
2(L + W) = P
2(96 + W + W) = 300
96 + 2W = 150
2W = 54
W = 27
Plug this back into L = 96 + W to find the length:
L = 96 + W
L = 96 + 27
L = 123
Therefore, the width is 27 yards and length is 123 yards.
Answer:
84 inches.
Step-by-step explanation:
Just take 12 and multiply it by 7. You get 84 inches as your final answer.
Hello!
The expression that is one of the steps in determining how many pieces can be cut is B. 3/4 • 10/1
Answer:
x for the first one is equal to-4
