In a motor of 220 machine parts, 10% parts were defective. In another motor of 160 machine parts, 20% parts were defective. For the two motors considered together, the percentage of non- defective machine parts were?

At a certain auto parts manufacturer, the Quality Control division has determined that one of the machines produces defective parts 19% of the time. A random sample of 7 parts produced by this machine is chosen. Find the probability that at most 2 of these parts are defective.Do not round your intermediate computations, and round your answer to three decimal places.

In a class, 15% of total number of students failed in Science, 5% of total number of students failed in Maths and 10% of total number of students failed in both.How much percentage of students passed in both Maths and Science?70%80%60%90%

On average, 5 % of items supplied by manufacturer X are defective. If a batch of 10 items is inspected: what is the probability that 2 items are defective 0.065 0.075 0.085 0.095

80% of the workers at a factory are male. 45% of the male workers and 30% of the female workers have been trained to use a new machine. What percentage of the workers have not been trained?

In a class of 500 students, 35% are girls and the rest are boys. 80% of girls and 60% boys passed in the exam.  Find the percentage of difference between the girls and boys that failed the exam to the boys who failed.Question 10Answera.72 5/13b.73 5/13c.72 1/13d.73 1/13