The weight of a usb flash drive is 30 grams and is normally distributed. periodically, quality control inspectors at dallas flash drives randomly select a sample of 17 usb flash drives. if the mean weight of the usb flash drives is too heavy or too light the machinery is shut down for adjustment; otherwise, the production process continues. the last sample showed a mean and standard deviation of 31.9 and 1.8 grams, respectively. using a = 0.10, the appropriate decision is

Standard deviation refers to how high or low a number is from the average. In this case that number is 1.8 grams. Although not stated as clearly, I can assume that it is says that the standard deviation is .10 or 10% from the mean.

We find 10% of 31.9 and get 3.19 (move the decimal to the left). 1.8 grams is less than 3.19 so the appropriate decision is to keep the production process flowing.

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3