What you’ll learn3 learning objectivesChoose one objective for a focused lesson, or study the complete topic.5.5.1Normal distribution• understand the use of a normal distribution to model a continuous random variable, and use normal distribution tables Sketches of normal curves to illustrate distributions or probabilities may be required.Syllabus objective5.5.2Problems concerning a variable X• solve problems concerning a variable X, where,XN 2+ nv_ i, including - finding the value of P 1Xx>_ i, or a related probability, given the values of x1, n, v. - finding a relationship between x1, n and v given the value of P 1Xx>_ i or a related probability For calculations involving standardisation, full details of the working should be shown, e.g. Z X v n = -_ i.Syllabus objective5.5.3Binomial distribution• recall conditions under which the normal distribution can be used as an approximation to the binomial distribution, and use this approximation, with a continuity correction, in solving problems. n sufficiently large to ensure that both np > 5 and nq > 5.Syllabus objective