A manufacturer claims that a new cell phone battery last 10.5 hours. A consumer agency believes that this claim is incorrect and runs a test on a sample of size 50. The sample mean is 9.6 hours with a standard deviation of 1.3 Is the company’s claim a valid one?

i really do not know lamo this is great

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

y + 11 = (1/4)(x + 16)

step-by-step explanation:

d. all of the above

step-by-step explanation: