(Answered) Learning biology with computers an educator wants to

Statistics

Learning biology with computers An educator wants to compare the effectiveness of computer software for teaching biology with that of a textbook presentation. She gives a biology pretest to each of a group of high school juniors, then randomly divides them into two groups. One group uses the computer, and the other studies the text. At the end of the year, she tests all the students again and compares the increase in biology test scores in the two groups. Is this an observational study or an experiment? Justify your answer.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92862789
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Inbspa statistics instructor wants to measure the

I. A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 66 students ( N = 66). He selects students by waiting at the door to the classroom prior to his lecture and pulling asid ...

In a poker hand consisting of 5 cards find the probabilty

In a poker hand consisting of 5 cards find the probabilty of holding 2 aces and 3 jacks In how many ways can you pick 5 different questions from a test bank contsisting of 15 questions? 3 dice are thrown find the probabi ...

A survey is conducted from a population of people of whom

A survey is conducted from a population of people of whom 65?% have a college degree. The following sample data were recorded for a question asked of each person? sampled, "Do you have a college? degree?" Complete parts ...

In a large university 68 of students live in dormitories a

In a large university, 68% of students live in dormitories. A random sample of 14 students is selected. What is the probability that the sample contains more than five students who do not live in the dormitories?

List the three assumptions of the independent groups t-test

List the three assumptions of the independent groups t-test. The consequences of violating which assumption are exacerbated if you have unequal N

A stocks price fluctuations are approximately normally

A stock's price fluctuations are approximately normally distributed with a mean of $26.94 and a standard deviation of $3.54. You decide to sell whenever the price reaches its highest 10% of values. What is the highest va ...

Suppose you want to calculate the z-score for your height

Suppose you want to calculate the? z-score for your height. How will the? z-scores compare if you use your height in inches verses? centimeters?

Toy wooden blocks are packaged in bags of 9 one bag

Toy wooden blocks are packaged in bags of 9. One bag contains 6 maple blocks and 3 birch blocks, while a second bag contains 5 maple blocks and 4 birch blocks. One block is drawn from the first bag and placed into the se ...

The statistical and regression questions are listed

The statistical and regression questions are listed below: What is the value of the simple correlation between TICKETS and COST? If you are able to determine the answer, is showing the film in more theatres associated wi ...

Initial public offeringa brazilian company called net shoes

Initial public offering A Brazilian company called Net shoes completed its IPO on April 12, 2017, and listed on the NYSE. Net shoes sold 8,250,000 shares of stock to primary market investors at an IPO offer price of $18, ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert