(a)[4]
Calculate the probability that one apple selected at random from Farmer Jones this year is sold to the supermarket.
(b)[3]
Calculate an estimate of his total income from this year’s apples.
(c)[3]
Find the value of $w$.
Mathematics 9709 · AS & A Level · Probability
Probability — practice question
Farmer Jones is growing apples. The apple weights this year, measured in grams, follow a normal distribution with mean $170$ and standard deviation $25$. Any apples weighing from $142$ grams to $205$ grams are supplied to a supermarket.