SOALAN 5 (a) Question ask: The number of students going to the library per day is given in Table Q2. Find the expected n
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SOALAN 5 (a) Question ask: The number of students going to the library per day is given in Table Q2. Find the expected n
SOALAN 5 (a) Question ask: The number of students going to the library per day is given in Table Q2. Find the expected number of students going to the library in a particular day. Hence, find the variance. Table Q2: Probability distribution of students going to the library X P(X) 12 0.1 16 0.4 20 0.2 24 0.1 28 0.2 (b) A shipment of 36 air conditioners is rejected if 5 are checked for defects and at least 1 is found to be defective. Find the probability that the shipment will be returned if there are 8 defective air conditioners. (c) Company Life-Liberty plans to market a new product to low-income families. Based on previous study, the average income per family is RM2300 with variance RM500. If Company Life-Liberty plans to target the bottom 20% of the families based on income, find the cut-off income. Assume the variable is normally distributed.
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