STT205 Email: bbcnoun@gmail.com Whatsapp: 08131667008 STT205 Suppose the probability of event A is the same whether event B occurs or not then events A and B will be said to be event Answer: independent In observation, the observer does not take part in the activity Answer: systematic What is the harmonic mean of 5, 6 and 7 Answer: 5.88 There are 5 trials and 2 successes, we can have the possible arrangements for the 2 successes \\(\\frac{5!}{2!(5-2)!}\\)this is equal to Answer: 10 Two events A and B are complimentary if and only if Answer: p(b)=p(b) Heights of thirty-five students of the National Open University of Nigeria forms a set of variables Answer: continuous The consists of a list of questions drawn on the study being conducted Answer: fixed-response questionnaire Binomial tables are used to solve problems involving probability of Answer: success The mean of the probability distribution is the expected value of the random variable that has the distribution Answer: specified can be used to study the behaviours of people in a work place Answer: observations is a conversation with a purpose Answer: interviewing When there is a sequence of the trials we have a Answer: process Binomial table is very useful when the number of is large, say 20 Answer: trials The type of observation whereby the observer is involved in the activities he is trying to observe is called observation Answer: participant Variance of the probability distribution of a discrete random variable is given as Answer: \\(e\\left (x_i- \\mu \\right)^2\\) The mean of a binomial distribution is as n x p, that is the number of trials multiplied by the probability of Answer: success A Binomial distribution is derived from a process known as a Bernoulli Answer: trial The relative frequency of a value of a variable is approximately probability of that value to the Answer: equal Probability of an events is defined as a value between that shows the likelihood of occurrence of the event Answer: 0 and 1 Suppose the probability of event A is the same whether event B occurs or not then events A and B will be said to be event Answer: independent In observation, the observer does not take part in the activity Answer: systematic Email: bbcnoun@gmail.com Whatsapp: 08131667008