Suppose you use simple random sampling to select and measure 28 backpacks' weights, and find they have a mean weight of 47 ounces. Assume the population standard deviation is 6.7 ounces. Based on this, construct a 99% confidence interval for the true population mean backpack weight

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

answer: about 22.67

step-by-step explanation:

what