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Nine MCQs in Statistics.

1) The probability that a new advertising campaign will increase sales is assessed as being 0.80. The probability that cost of developing the new ad campaign can be kept within the original budget allocation is 0.40. Assuming that the two events are independent, the probability that cost is kept within budget and the campaign sales is:
A) 0.20 (B) 0.32 (C) 0.40 (D) 0.88

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9) Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizen over 60 years of age whose is too high to qualify for Medicade and have no private health insurance. The age of 25 uninsured citizen were as follows:
60 61 62 63 64 65 66 68 68 69 70 73 73
74 75 76 76 81 81 82 86 87 89 90 92

Identify the first quartile of the ages of the uninsured senior citizen
A) 63.5 years (B) 64 years (C) 66 years (D) 68 years

All the nine questions are in the attached file.

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Answers to all the nine questions with a brief explanation wherever necessary.

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