An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 280 engines and the mean
pressure was 7.5 pounds/square inch (psi). Assume the population variance is 0.81. If the valve was designed to produce a mean pressure of 7.6 psi.
is there sufficient evidence at the 0.1 level that the valve does not perform to the specifications?

the answer would be 484

step-by-step explanation:

just multiply 0.484 times 1,000 (formula)

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.

i suppose it should be (y=2x-5)

step-by-step explanation:

x-150=475   x=625

step-by-step explanation:

if the bike after the sale ($150) is $475 then just simply add 150 to 475.