The mean song length on Jacks 3 minutes and 3 seconds , with a Standard deviation of 24 seconds. Find the probability that the next song to play is no more than 3 minutes and 45 seconds.

0.9599

Step-by-step explanation:

First, convert the times to seconds.

3 min 3 sec = 183 sec

3 min 45 sec = 225 sec

Next, find the z-score.

z = (x − μ) / σ

z = (225 − 183) / 24

z = 1.75

Next, use a calculator or z score table to find the probability.

P(Z < 1.75) = 0.9599

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

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