Purchase Solution

Test mean aptitude test scores of two groups of freshman students

Not what you're looking for?

Ask Custom Question

The mean score for freshman on an aptitude test at a certain college is 800 with a standard deviation of 50. That is the probability that two groups of students selected at random, consisting of 36 and 49 students, respectively, will differ in their mean scores by: (Assume mean scores are continuous)

a) more than 12 points?

b) an amount between 7 and 15 points?

The professor listed the answers to be:
a) 13.7%
b) 17.6%

Purchase this Solution
Solution Summary

The expert examines test mean aptitude test scores of two groups of freshman students.

Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

View More Free Quizzes
Related BrainMass Solutions

  • Probabilities, Hypothesis Testing

    Each of a random sample of ten college freshmen takes a mathematics aptitude test both before and after undergoing an intensive training course designed to improve such test scores.

  • SAT score

    Solution: According to empirical rule, 95 percent of the scores lie within two standard deviations from the mean. Lower limit = 547 - 2*74 = 399 Upper limit = 547 + 2*74 = 695 Thus, interval will be [399, 695].

  • Interpret P-Value using a One-Tail Test for SAT Scores

    Eighty students have been randomly divided into two groups of 40. The eventual SAT scores for those exposed to the new program and the conventional program are listed in data file XR11043.

  • Scholastic Aptitude Test and Mean of Score

    459105 The students of Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below.

  • Hypothesis Testing & Descriptive Statistics

    Can the college conclude that the students in the new program are significantly different from the rest of the freshman class? Use a two tailed test with alpha=.05 5.

  • Achievement and Apitude Assessments

    Examples of the Aptitude test include the Scholastic Assessment Test (SAT), The Act Assessment (ACT), and the Graduate Record Examination (GRE).

  • Hypothesis testing problems in SPSS

    ¢ statistical aptitude, and has enrolled a sample of 30 students in it. The researcher then collects studentsââ?¬â?¢ statistical aptitude scores at the end of the program. 1.

  • Hypothesis Testing:Statistics on English composition course

    For the general population of freshman who took the traditional lecture class, the exam scores form a normal distribution with a mean of µ=80.

  • Hypothesis Testing, Cohen's d & Effect size

    Can the college conclude that the students in the new program are significantly different from the rest of the freshman class? Use a two-tailed test with a alpha value = .05 22.

View More Related Solutions