The average Pag-ibig salary loan for RFS Pharmacy, Inc. employees is ₱13,000. If the debt is normally distributed with a standard deviation of ₱3,500, find the probability that the employee owes less than ₱16,500.
Solution:
Step 1: Draw a figure and represent the area.
Step 2: Find the z value.
Step 3: Find the appropriate area.
"\\mu = 13000 \\\\\n\n\\sigma= 3500 \\\\\n\nP(X<16500) = P(Z< \\frac{16500-13000}{3500}) \\\\\n\n= P(Z< 1) \\\\\n\n= 0.8413"
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