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6. A certain brand of chocolate bar is advertised to weigh 8.0 ounces. The distribution of the actual weights of the chocolate bars is normal with a mean of 8.1 ounces and a standard deviation of 0.1 ounce.
(a) What proportion of chocolate bars weigh more than 8.0 ounces?
(b) What is the probability a randomly selected chocolate bar has a weight between 8.2 and 8.3 ounces?
(c) The company wants to stamp a weight on the package so that only 2.5% of all chocolate bars are below that weight. What weight should they stamp on the package?
Does anyone know how to do that?
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