6.24 The probability of success of 600 students ap- pearing in a test independently is 0.40. Using normal approximation, find the probability that (a) between 215 and 250 students pass, both inclusive; (b) exactly 270 students pass; (c) fewer than 205 and more than 260 students pass.

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6.24 The probability of success of 600 students ap-
pearing in a test independently is 0.40. Using normal
approximation, find the probability that
(a) between 215 and 250 students pass, both inclusive; (E
(b) exactly 270 students pass;
(c) fewer than 205 and more than 260 students pass.
6.
6.25 In a textile mamlacturing company, 2% oaf the
sta
items are known to be defective, The quality eontrol
ar
Transcribed Image Text:Erercises Exercises 6.24 The probability of success of 600 students ap- pearing in a test independently is 0.40. Using normal approximation, find the probability that (a) between 215 and 250 students pass, both inclusive; (E (b) exactly 270 students pass; (c) fewer than 205 and more than 260 students pass. 6. 6.25 In a textile mamlacturing company, 2% oaf the sta items are known to be defective, The quality eontrol ar
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