To convert raw scores from a non-standardized test to standard scores, which      one of the following is required for the process?Question 20Answera.Mean and Modeb.Range and Standard deviationc.Mean and standard deviationd.Mean and range

A score which expresses test performance in terms of standard deviation units from the mean _______.Question 10Answera.Raw scoreb.Non-standardized scorec.Standard scored.Average score

The standard deviation shows how scores are dispersed around theQuestion 18Answera.rangeb.modec.mediand.mean

On a nationwide test taken by high school students, the mean score was 49 and the standard deviation was 12. The scores were normally distributed. Complete the following statements.(a) Approximately 95% of the students scored between and .(b) Approximately of the students scored between 13 and 85.

.Question 15You know that for variable A μ = 1400 and σ = 300. You alsoknow that the variable is normally distributed. You decide to change the scores of this variableinto z-scores. What is the mean and standard deviation of this new distribution?1 pointCannot be calculated on the basis of this information.Mean = 1400, standard deviation = 300.Mean = 0, standard deviation = 1.Mean = 1400, standard deviation = 1.

In a Statistics test, the average mark is 82 and the standard deviation is 5. All the students from 88 marks up to 94 marks will receive a B grade. If the marks have a normal distribution and 8 students receive B grade, determine the total number of students who sat for the test.