A manufacturer of water heaters produces 30 water heater a week, past record indicates 10% of total water heaters produced a week are likely to be defective

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A manufacturer of water heaters produces 30 water heater a week, past record indicates 10% of total water heaters produced a week are likely to be defective

A manufacturer of water heaters produces 30 water heater a week, past record indicates 10% of total water heaters produced a week are likely to be defective. suppose a quality check was conducted on a sample of 6 water heaters. What is the probability that four of out of 6 water heaters will be defective ?