Step-by-step explanation:
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40% of lightbulb produced by shining beauty company have suboptimal performance. 5 bulbs are chosen for test. find the probabili
ty that 2 bulbs or less have suboptimal perfor-mance. (b) 40% of lightbulb produced by shining beauty company have suboptimal performance. 500 bulbs are chosen for test. compute approximately the probability that 210 bulbs or less have suboptimal performance. (c) 0.4% of lightbulb produced by light company have suboptimal performance. 500 bulbs are chosen for test. compute approximately the probability that 2 bulbs or less have subopti-mal performance
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Answer:
Step-by-step explanation:
We know that for principal amount P , time period T and rate of interest , simple interest is given by
.
Here ,
To find : simple interest rate i.e.,
On putting values of in formula , we get
Now we need to round off the answer to the nearest tenth .
So, simple interest rate is % = =