AS & A Level Mathematics (9709) — May–June 2024, Paper 61
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →A bus station has exactly four entrances. In the morning the numbers of passengers arriving at these entrances during a 10-second period have the independent distributions…
Answer this question and get it marked →The random variable X has the distribution N(31.2, 10.4^2). Two independent random values of X, denoted by X1 and X2, are chosen. Find P(X1 3X2).
Answer this question and get it marked →The time taken in minutes for a certain daily train journey has a normal distribution with standard deviation 5.8. For a random sample of 20 days the journey times were noted and…
Answer this question and get it marked →A random sample of 8 boxes of cereal from a certain supplier was taken. Each box was weighed and the masses in grams were as follows. 261 249 259 252 255 256 258 254 Find unbiased…
Answer this question and get it marked →Sales of cell phones at a certain shop occur singly, randomly and independently. State one further condition that must be satisfied for the number of sales in a certain time…
Answer this question and get it marked →The diagram shows the graph of the probability density function, f, of a random variable X. The graph is a quarter circle entirely in the first quadrant with centre (0, 0) and…
Answer this question and get it marked →Every July, as part of a research project, Rita collects data about sightings of a particular kind of bird. Each day in July she notes whether she sees this kind of bird or not,…
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