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Calculate the average student score necessary for the district to retain its federal funding. You may assume that the Standard Deviation will not change. This will require some thought. Think of the z score. You will be solving for mu (average test scores in the next school year. You know the standard deviation (because we assume that the variation in test scores stays approximately the same across the year. You also know that 70% of students mus meet the cut off scores.
Information we know last year only 49% of the students at the high school met the cut off score of 70%.
51% of the students did not meet the cut off score of 70%.
You are determining what average of test scores is needed in the next year to retain funding. Fill in the z score that you fin in the table in your z formula and solve for mu.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
Using your answers to the earlier parts of this question, explain how the sample size affects the mean and SD of the sum of a collection of random variables. Limit your answer to 2-3 sentences.
If 4.01% of these DVD players have a life span of more than 8 years, what is the standard deviation of the DVD player's life span?
The hiker has no map and makes random choices of trail and subtrail. What is the probability of reaching the destination?
Complete the test at the 5% level of significance.
Find the number of viewers that represents the 75th percentile and on one particular night, 24 million people watched 60 minutes. Is this unusual?
In this research report you will be analysing a set of data of which can be found in an EXCEL file available for download in the Assessment section of the Blackboard site.
Formulate a linear program that can be used to determine the number of hours each graphic designer should be assigned to the project in order to minimize total cost. What is the total cost?
In an exam, the mean score is 70 and the variance is 16. What is the probability that a student's score will lie within the "54 to 86" range?
A fair, six-sided die is rolled 3 times. What is the probability of getting a 5 or greater on exactly two of the rolls? Example: According to the Facts 2006 webpage, 53% of UI students are men.
Finding probability for the given values of the uniform density curve
Verify that this is valid density function. Find out probability that weight is smaller than 24 ounces.
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