The IELTS scores for International students were analyzed and stored in a file. Assuming that the...

The IELTS scores for International students were analyzed and stored in a file. Assuming that the scores are normally distributed and knowing that 15% of the mean scores were below 45 and 20% of the mean scores were above 75, show how you can determine their mean and standard deviation of the test scores for the students.(5 Points)

Expert Solution

orchestra answered 2 years ago

The Mathematics test scores for BEKM students were analyzed and stored in a file. Assuming the...

The Mathematics test scores for BEKM students were analyzed and stored in a file. Assuming the scores are normally distributed. Knowing that 20% of the mean scores were above 70 and 15% of the mean scores were below 40, find their mean and standard deviation of the test scores for the students

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The Test results of the Business Statistics were published and the scores were as followed Students...

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Write a program that reads a file consisting of students’ test scores in the range 0–200....

Write a program that reads a file consisting of students’ test scores in the range 0–200. It should then determine the number of students having scores in each of the following ranges: 0–24, 25–49, 50–74, 75–99, 100–124, 125–149, 150–174, and 175–200. Output the score ranges and the number of students. (Run your program with the following input data: 76, 89, 150, 135, 200, 76, 12, 100, 150, 28, 178, 189, 167, 200, 175, 150, 87, 99, 129, 149, 176, 200,...

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Researchers wanted to compare the GRE scores of the students who were trained in an academy...

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In a random sample of 100 college students, scores on a test were normally distributed with...

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