seating in a row, how many possible ways are there for guests to be seated? 2. 1

Question

seating in a row, how many possible ways are there for guests to be seated? 2. 15 points| In answering a question on a multiple-choice test, a student either knows the answer or guesses. The student knows the answer half the times and guesses otherwise Assume that choices are equally likely to be selected in a multiple choice exam with 5 choices, when the student guesses. Given that the student has answered the question correctly, what is the probability that he knew the answer? 15 p ounces and a standard deviation of 0.5 ounce. oints The weight of a running shoe is normally distributed with a mean of 10 3. h uoihs more than 11 ounces?

Explanation / Answer

here probability to answer correctly =P(knew answer and answered correctly+does not knew and answered correctly)

=0.5*1+0.5*(1/5)=0.6

hence probability of knowing the answer given answered correctly

=P(knew answer and answered correctly)/P(answered correctly) =0.5*1/0.6= 5/6

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