The "You Gotta Be Nutz" candy bar has mean weight 75.3 g and standard deviation 4.7 g. The manufacturer wants to avoid complaints that any single candy bar weighs far too little, so it decides to advertise a "minimum guaranteed weight."

a. What weight should the manufacturer advertise if they want 80% of the candy bars to meet or exceed the minimum weight? (Sketch a normal curve with shading, and write a complete sentence using your numerical answer.)
b. What weight should the manufacturer advertise if they want 90% of the candy bars to meet or exceed the minimum weight? (Sketch a normal curve with shading, and write a complete sentence using your numerical answer.)
c. What weight should the manufacturer advertise if they want 95% of the candy bars to meet or exceed the minimum weight? (Sketch a normal curve with shading, and write a complete sentence using your numerical answer.)

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