AS & A Level Mathematics (9709) — May–June 2023, Paper 61
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →In a certain country, 20540 adults out of a population of 6012300 have a degree in medicine. Use an approximating distribution to calculate the probability that, in a random…
Answer this question and get it marked →The graph of the function f is a straight line segment from (0, 0) to (2, 1). (On the diagram, f(x) is plotted against x, with the value 1 marked on the f(x) axis and the values…
Answer this question and get it marked →In the past, the annual amount of wheat produced per farm by a large number of similar sized farms in a certain region had mean 24.0 tonnes and standard deviation 5.2 tonnes. Last…
Answer this question and get it marked →A certain train journey takes place every day throughout the year. The time taken, in minutes, for the journey is normally distributed with variance 11.2. The mean time for a…
Answer this question and get it marked →Large packets of rice are packed in cartons, each containing 20 randomly chosen packets. The masses of these packets are normally distributed with mean 1010 g and standard…
Answer this question and get it marked →A sample of 5 randomly selected values of a variable X is as follows: 1 2 6 1 a where a 0. Given that an unbiased estimate of the variance of X calculated from this sample is…
Answer this question and get it marked →The number of accidents per week at a certain factory has a Poisson distribution. In the past the mean has been 1.9 accidents per week. Last year, the manager gave all his…
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