(Answered) Question learning biology with computers an educator wants

Statistics

Question: 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.:- M92567031
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

Jamie dimon changed the business model for jpmorgan chase

Jamie Dimon changed the business model for JPMorgan Chase in 2008. In the process, the bank gave enormous trading authority to one individual. What are the ERM strengths and weaknesses of this strategy?

1 a team of researchers have developed a new weight loss

1. A team of researchers have developed a new weight loss drug. They want to know if patients who use the new drug for two weeks lose any weight. The drug has some minor side effects including mild headaches and achiness ...

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 ...

On valentines day thenbspquiet nooknbsprestaurant offers

On Valentine's Day the Quiet Nook restaurant offers a Lucky Lovers Special that could save couples money on their romantic dinners. When the waiter brings the check he also brings a scratch-off ticket that the couple ...

1 you are analyzing a common stock with a beta of 28 the

1.) You are analyzing a common stock with a beta of 2.8. The risk-free rate of interest is 5 percent and the expected return on the market is 12 percent. What is the stock's equilibrium required rate of return? Round to ...

David barnes and his fianceacutee valerie shah are visiting

David Barnes and his fiancée Valerie Shah are visiting Hawaii. There are 38 guests registered for orientation. It is announced that 20 randomly selected registered guests will receive a free lesson of the Tahitian dance. ...

On the production line the company finds that 956 of

On the production line the company finds that 95.6% of products are made correctly. You are responsible for quality control and take batches of 30 products from the line and test them. What number of the 30 being incorre ...

Anystate auto insurance company took a random sample

Anystate Auto Insurance Company took a random sample of 388 insurance claims paid out during a 1-year period. The average claim paid was $1575. Assume σ = $240. Find a 0.90 confidence interval for the mean claim paymen ...

A factory makes parts for laptop computers including screws

A factory makes parts for laptop computers, including screws. The screws are required to have the right length. The lengths of the screws obey a normal distribution with mean μ=4.25 millimeters and standard deviation σ=0 ...

For an environmental group it is known that 75 of their

For an environmental group, it is known that 75% of their door-to-door solicitations result in a donation of some kind. Find the probability that... (Hint: first determine what is a 'success' and what is a 'failure' base ...

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