(a) The number of students going to the library per day is givenin Table Q2. Find the expected number of students going to thelibrary in a particular day. Hence, find the variance.
(b) A shipment of 36 air conditioners is rejected if 5 arechecked for defects and at least 1 is found to be defective. Findthe probability that the shipment will be returned if there are 8defective air conditioners.
(c) Company Life-Liberty plans to market a new product tolow-income families. Based on previous study, the average incomeper family is RM2300 with variance RM500. If Company Life-Libertyplans to target the bottom 20% of the families based on income,find the cut-off income. Assume the variable is normallydistributed.
(a) The number of students going to the library per day is given in Table Q2. Find the expected number of students going
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(a) The number of students going to the library per day is given in Table Q2. Find the expected number of students going
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