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.

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

step-by-step explanation:

answer: you need to organize this better it does not make sense.

step-by-step explanation: ?