4. (10 pts) A study is conducted to estimate the difference in the mean occupational exposure to radioactivity in computer scien
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±1/2. The equation has two possible solutions +1/2 and -1/2.
The problem is a quadratic equations and it can be solved using the equation .
Ordering the quadratic equation given in the problem, we obtain where a = 4, b = 0, and c = -1
Substituting the values