PYC3704 ASSIGNMENTS WITH LATEST VERIFIED QUESTIONS AND 100% CORRECT ANSWERS ALREADY GRADED A+

PYC3704 ASSIGNMENTS WITH LATEST VERIFIED QUESTIONS AND 100% CORRECT ANSWERS ALREADY GRADED A+ An inference is - - - - -. - ANS-a generalisation from a specific situation to the phenomenon in general, which have a high probability of being true In quantitative research, 'measurement' refers to which of the options given below? - ANS-(a) A procedure for allocating numbers to aspects of observations based on a rule. (c) A process of changing an abstract construct into a visible variable. "The mental age of child number one is eight years". In this statement "mental age" is a(n) - - - - -, whereas "eight years" is a - - - - -. - ANS-variable; specific value of that variable A measurement that summarizes an aspect of a population is called a - - - - - while a measurement that describes the same aspect of a sample is called - - - - -. - ANS-parameter; statistic A - - - - - is a speculative statement about the relationship among - - - - -, based on observations or expectations. - ANS-hypothesis; constructs Rose is interested in studying creativity among fine arts students. She randomly selects 100 students who are attending a school for fine arts and tests each of them on a creativity test. In this example, the entire collection of fine arts students which Rose is interested in is referred to as the - - - - -, while the 100 cases which she requires to perform the creativity test are the - - - - -. - ANS-population; sample A frequency distribution of the ages in months of a class of Grade 1 children indicates for each age in months what the corresponding - - - - - is. - ANS-number of children of that age If a pupil will be chosen to go on a field trip from a class of 13 girls and 17 boys, what is the probability that Noni (one of the 13 girls) will be chosen, given that a girl will be selected? - ANS-0.077 Which statement best represents an application of the law of large numbers? If I flip a coin 1000 times it will fall heads up - - - - - 500 times. - ANS-approximately Suppose that over the years 10 000 students wrote the examinations in PYC3704 and that 6000 of them passed, of which 300 obtained exactly 50%. This means that for randomly selected students the probability of obtaining exactly 50% is - - - - - while the probability of obtaining 50% or more is - - - - -. - ANS-0.03; 0.60 The scale along the horizontal axis of the standard normal distribution indicates - - - - -. - ANS-the number of standard deviations below and above the mean A researcher wants to check that a pair of dice are fair (i.e. evenly balanced). What would the probability be of rolling two sixes with two throws of a pair of fair dice? - ANS-0.028 what would the consequences be? Choose the correct option(s). - ANS-You would be more likely to make a type two error. &There would be fewer instances when the null hypothesis could be rejected. A p-value generally tells us the - - - - -. - ANS-likelihood of obtaining the pattern of results due to sampling error if there is in fact no relationship between the relevant variables in the population How can p.05 be interpreted? Select the correct option below. - ANS-There is a less than 1 in 20 probability of the result occurring by chance alone if the null hypothesis were true. What is the principal advantage of z scores? They enable one to - - - - -. - ANS-compare a person's scores on tests with different means and standard deviations There are 16 boys and 24 girls in a sample of grade 11 learners. It is found that 6 of the girls and 2 of the boys have no brothers or sisters. If one child is drawn from this sample at random, what is the probability that it will be an only child? - ANS-0.200 A bowl contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability that the marble would be EITHER green OR yellow? - ANS-0.363 The number of items that fall into each of an ordered list of categories is calculated, based on a sample of data. Each of these counts are divided by the total number of observations to produce a list of values. This list of values gives an estimate of the - - - - - distribution of the observations. - ANS-probability The standard error is a measurement of - - - - -. - ANS-1. how well a sample mean approximates a population mean An educational psychologist measures the general knowledge of 100 learners on a questionnaire with 50 questions. She finds the means and standard deviations of the scores are 20 and 8 respectively for the sample of data. What is the z-score corresponding to a test score of 14 on the general knowledge test? - ANS-- 0.75 An educational psychologist measures the general knowledge of 100 learners on a questionnaire with 50 questions. She finds the means and standard deviations of the scores are 20 and 8 respectively for the sample of data. What is the probability that a specific learner will obtain a score of 14 or less on the questionnaire in the scenario above? - ANS-0.2266 When applying a statistical test, a decision is reached by comparing the - - - - - to the - - - - -. - ANS-pvalue; level of significance What does it mean to say "the difference between the means of groups A and B is statistically significant"? - ANS-The sample result is more probable under the alternative hypothesis. The value that is conventionally indicated with the symbol α refers to the - - - - -. - ANS-maximum probability of making an error of Type I if the rejection of H0 is to be considered A null hypothesis is - - - - -. - ANS-the assumption that there is no relationship or difference between parameters of the variables you are testing If you decided to set the level of significance to α = 0.001 rather than a more conventional level of α = 0.05, The probability of obtaining the data if the null hypothesis were true is less than 5%.