Q-4: the number of Refrigerators sold per day at a retail store is shown in the table. Number of 19 refrigerators sold(x) P(x)=P(X=x) 0.2 20 21 22 23 0.2 0.3 0.2 0.1 a) What is the expected value of...



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Q-4: the number of Refrigerators sold per day at a retail store is shown in the table.<br>Number of 19<br>refrigerators<br>sold(x)<br>P(x)=P(X=x) 0.2<br>20<br>21<br>22<br>23<br>0.2<br>0.3<br>0.2<br>0.1<br>a) What is the expected value of the number of refrigerators that sold per day at a<br>retail store?<br>b) What is the standard deviation of the distribution?<br>c) Determine the cumulative probability distribution function.<br>d) What is the probability that the number of refrigerators that are sold is greater<br>than 20 refrigerators?<br>

Extracted text: Q-4: the number of Refrigerators sold per day at a retail store is shown in the table. Number of 19 refrigerators sold(x) P(x)=P(X=x) 0.2 20 21 22 23 0.2 0.3 0.2 0.1 a) What is the expected value of the number of refrigerators that sold per day at a retail store? b) What is the standard deviation of the distribution? c) Determine the cumulative probability distribution function. d) What is the probability that the number of refrigerators that are sold is greater than 20 refrigerators?

Jun 05, 2022
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