Normal distribution to approximate a binomial distribution
For the following conditions, determine if it is appropriate to use the normal distribution to approximate a binomial distribution with n=38 and p=0.3. Explain your answer.
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How many mL of 0.2 M sodium acetate should be added to 200 mLof 0.1 M acetic acid to make a buffer of pH 5? What will the total concentration of acetate be in the solution (acetate + aceticacid)?
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Take the potential of the negative plate to be zero. If the potential halfway between the plates is then +4.0 V, what is the electric field in the region between the plates? (Take directly towards the negative plate to be the positive direction).
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