A sample of 75 concrete blocks had a mean mass of 38.3 kg with a standard deviation of 0.5 kg. An engineer claims that the mean mass is between 38.2 and 38.4 kg. With what level of confidence can this statement be made? (Express the final answer as a percent and round to two decimal places.) The level of confidence is %.

why can't you?

step-by-step explanation:

the line of

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: