Six groups of randomly selected students matched for iq and, Ask an Expert

Statistics

Six groups of randomly selected students matched for IQ and age were formed. Each student was taught a concept of time by using one of three methods: Lecture, demonstration, or teaching machine. The scores are shown in the table below indicated the student's performance when they were tested on how well the grasped the concept.

Group Lecture Demonstration Teaching Machine

1 20 23 24

2 25 25 27

3 30 40 39

4 37 26 41

5 24 20 21

6 16 18 25

Is there sufficient evidence to indicate that the teaching methods differ in effectiveness?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9392088

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

If two samples a and b had the same mean and sample size

If two samples A and B had the same mean and sample size, but sample A had a larger standard deviation, which sample would have the wider 95% confidence interval?

A manufacturer obtains clock-radios from three different

A manufacturer obtains? clock-radios from three different? subcontractors: 10?% from? A, 30?% from? B, and 60?% from C. The defective rates for these subcontractors are 3?%, 2 %, and 5?% respectively. If a defective? clo ...

A researcher records the following body mass index bmi

A researcher records the following body mass index (BMI) scores for a group of participants: 29.1 1.3 (M SD). Participants who score between 26 and 30 on this scale are categorized as overweight. What proportion of parti ...

Williamnbspis interested in knowingnbspwhether or not

William is interested in knowing whether or not athletics from his team have lower satisfaction with their team on a survey than the known population average survey score of 19 and the known population survey standard ...

Suppose a random sample of n 49 observations is selected

Suppose a random sample of n = 49 observations is selected from a population that has normal distribution with mean 106 and standard deviation 12. a) Give the mean and the standard deviation of the sample mean X. b) Find ...

A hotel claims thatnbsp95 of its customers are very

A hotel claims that 95?% of its customers are very satisfied with its service. Complete parts a through d below based on a random sample of seven customers. What is the probability that more than six customers are very? ...

Advantage and disadvantage of sole proprietorship than a

Advantage and disadvantage of sole proprietorship than a corporation? Example of a business that is more suitable for both sole proprietorship and corporation structure.

Suppose a sample space has things ab and c twice draw from

Suppose a sample space has things a,b and c. Twice, draw from the sample space and replace. The possible sequences formed are {aa, ab, ac,ba,bb, bc,ca,cb,cc} Now suppose there are Y different things. There are Y ways the ...

During the period from 2011 through 2015 the annual returns

During the period from 2011 through 2015 the annual returns on small U.S. stocks were -3.34 percent, 19.21 percent, 46.95 percent, 2.91 percent, and -4.10 percent, respectively. What would a $1 investment, made at the be ...

Lisa anderson expects to need 80000 for a down payment on a

Lisa Anderson expects to need $80,000 for a down payment on a house in six years. How much would she have to invest today in an account paying 7.25 percent in order to have $80,000 in six years? (Round answer to 2 decima ...

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