# statistics in psychology

posted by .

An analysis of the combined SAT scores (Verbal + Math) of a sample of psychology majors at one school indicated that the mean was 939 and the standard deviation was 166. Show your calculations used the answer the following two questions.

a. A special psychology research program only accepts applicants who had an SAT score that placed them in the top 20% of the students. What is the minimum SAT score that would place them in the top 20%?

b. Special tutors are available to assist psychology students who had an SAT score in the bottom 10% of students. What SAT score cuts off the bottom 10% of this group of students?

• statistics in psychology -

a. Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score that fits that proportion. Insert the three values into the equation above to calculate the score.

b. Go through the same process.

• statistics in psychology -

Given a mean of 60, with a standard deviation of 12, and with a raw score of 75, find: (a) the z-score, (b) percentile rank, (c) t-score, (d) SAT score, and (e) stanine score. Discuss why there are so many kinds of standardized scores.

## Similar Questions

1. ### statistics

Every year thousands of students take the SAT'S. RECENT TRENDS SHOW THAT THE SCORES ON THE VERBAL SECTION FOLLOW AN APPROX. NORMAL DISTRIBUTION WITH MEAN 550 AND STANDARD DEVIATION OF 110 68.26% OF THE STUDENTS WHO TAKE THE SAT VERBAL …
2. ### statistics

what are the mean and standard deviation of a sampling distribution consisting of samples of size 16?
3. ### statistics

Sat scores l around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distributions. a person who scores 600 on the sat 1 has approximately what percentile rank within …
4. ### statistics

sat scores around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distribution. a person who scores 600 on the sat has approximately what percentile rank within …
5. ### statistics

The average math SAT score is 500 with a standard deviation of 100. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this school was selected, and the mean math …
6. ### statistics

5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics?
7. ### statistics

5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics?
8. ### statistics

4. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use web-calculator to answer the following questions. Instead, you …
9. ### statistics

Suppose scores on the mathematics section of the SAT follow a normal distribution with mean 540 and standard deviation 120. ACT math scores are normally distributed with a mean of 18 and a standard deviation of 8. What score on the …
10. ### statistics

Suppose scores on the mathematics section of the SAT follow a normal distribution with mean 540 and standard deviation 120. ACT math scores are normally distributed with a mean of 18 and a standard deviation of 8. What score on the …

More Similar Questions