Consider the accompanying data on breaking load (kg/25mm width) for various fabrics in both an unabraded condition and an abraded condition.

Fabric
1 2 3 4 5 6 7 8
U 36.4 55.0 51.5 38.7 43.2 48.8 25.6 49.8
A 28.5 20.0 46.0 34.5 36.5 52.5 26.5 46.5

a. Test if the average breaking load of various fabrics in unabraded condition is greater than that in abraded condition using the rejection method at significance level 0.01.
b. Compute a 99% confidence interval for the true average difference of breaking load for fabric in unabraded and abraded condition.

8y^50

step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart

x-3y=4

step-by-step e