Difference in spatial ability in left-right-handed pepole

Reference no: EM13493692

To test the hypothesis in Exercise 1, the admissions counselors select a random sample of freshmen and compare their scores on the SAT to those of the population of upperclassmen. They find that the freshmen do in fact have a higher mean SAT score. However, what they are unaware of is that the sample of freshmen was not representative of all freshmen at Brainy University. In fact, the sample overrepresented those with high scores and underrepresented those with low scores. What type of error (Type I or Type II) did the counselors make?

a. A study in which researchers want to test whether there is a difference in spatial ability between left- and right-handed people

b. A study in which researchers want to test whether nurses who work 8-hour shifts deliver higher-quality work than those who work 12-hour shifts

c. A study in which researchers want to determine whether crate-training puppies is superior to training without a crate.

Reference no: EM13493692

Questions Cloud

Several research terms and concepts are introduced : In the scientific method, several research terms and concepts are introduced. What is the difference between random assignment and random sampling? How is each related to internal and external validity?

Places of employment-shopping and entertainment : Once upon a time, a husband and wife lived together in a part of the city separated by a river from the places of employment, shopping, and entertainment. The husband had to work nights. Each evening he left his wife and took the ferry to work, re..

Computed the F ratio for four-group experiment : A researcher computed the F ratio for a four-group experiment. The computed F is 4.86. The degrees of freedom are 3 for the numerator and 16 for the denominator.

Groups variance and within-groups variance : Explain between-groups variance and within-groups variance

Difference in spatial ability in left-right-handed pepole : To test the hypothesis in Exercise 1, the admissions counselors select a random sample of freshmen and compare their scores on the SAT to those of the population of upperclassmen. They find that the freshmen do in fact have a higher mean SAT score..

Explain the purpose of a null hypothesis : Explain the purpose of a null hypothesis. Why are both a research/alternative hypothesis and a null hypothesis necessary in statistics?

Cultural figure lead to suicides in general population : How could the suicide of a popular cultural figure lead to suicides in the general population? What is the effect of these suicides on teens?

Admissions counselors select a random sample of freshmen : To test the hypothesis in Exercise 1, the admissions counselors select a random sample of freshmen and compare their scores on the SAT to those of the population of upperclassmen. They find that the freshmen do in fact have a higher mean SAT score..

Sample mean : A sample of n = 4 scores is obtained from a population with m = 70 and mc005-1.jpg = 12. If the sample mean corresponds to a z-score of 2.00, then the sample mean must be _____.

User Account

All Pages