Mo suspects that a six-sided dice is biased. He rolls it 60 times and gets 17 sixes.
(a) Find the critical region for a two-tailed test, at the 5% level, of whether the probability of a six differs from 1/6. Use 2.5% in each tail.
(b) State the actual significance level of the test.
(c) Carry out the test, stating your conclusion in context.
From Paper 3: Statistics and Mechanics
510 marks
The masses, W grams, of loaves from a bakery are normally distributed. 10% of loaves weigh more than 520 g and 5% weigh less than 470 g.
(a) Find the mean and standard deviation of W.
(b) Find P(W > 510).
(c) Three loaves are chosen at random. Find the probability that all three weigh more than 510 g.
Score 0 / 19 · 0 of 2 marked
This paper is written by Plasmo in the style of the Edexcel A-Level Maths exam. It is not a past paper and is not produced or endorsed by the exam board.