A boiler has four identical relief valves. The probability that any particular valve will open on demand is 0.96. Assume independent operation of the valves. Calculate P(at least one valve opens). (Round your answer to eight decimal places.) .84934656 Incorrect: Your answer is incorrect. Calculate P(at least one valve fails to open). (Round your answer to four decimal places.)

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step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

imma say 16%. sorry if its wrong. i'm doing the same stuff right now

step-by-step explanation:

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.