Scores on an examination are assumes to be normally distributed with mean 78 and variance 36.
a.What is the probability that a person taking the examination scores higher than 72?
b.Suppose that students scoring in the top 10% of this distribution are to receive an A grade. What is the minimum score a student must achieve to earn an A grade?
c.What must be the cutoff point for passing the examination if the examiner wants only the top 28.1% of all scores to be passing?
d.Approximately what proportion of students have scores 5 or more points above the score that cuts off the lowest 25%?
e.If it is known that a student's score exceeds 72, what is the probability that his or her score exceeds 84?
Correlation ... Does correlation equal causation? Does the strength of correlation depend on the direction? What is the meaning of a zero correlation? ...
... The solution gives detailed steps on solving a set of 30 questions on descriptive statistics including the topics of mean ... Answer all 30 questions. ...
... will mine answers related to the topic - depression and ...All these data - numeric and narrative - will together ... Where will the descriptive statistics come from? ...
... do this via the conference because we all learn from ... Once the topic is closed we can continue the discussion ... Then I found a page with statistics on trade (http ...
... a statistics practice quiz for a first semester statistics class. ... on the quiz covering the following topics: 1. Confidence ... on a set of batteries for all of the ...
... desired; and (4) combination and improvement As a typical example, look at the statistics in of ... Osborn believed that the ideas gen- ing about all kinds of ...
... is from excel output: Regression Statistics Multiple R ... The topics are regression, forecasting, linear programming and ... 1. Copy and paste all necessary data from ...
... we all learn from each other's postings. Once the topic is closed we can continue the discussion via email. Deliverable 1: Descriptive Statistics Sampling ...
... your reasoning by integrating supporting expert views and evidence (facts, statistics, case studies ... Write down all the ideas you have about your topic in a ...
