Inferences and assumptions

Assignment Help Basic Statistics
Reference no: EM1393314

An experiment was conducted to compare the effects of two teaching styles for grade 12 mathematics. the individuals in experiment were grade 12 math students from one particular high school. the students were randomly assigned of the two treatment groups. after 3 week course all students took an identical standardized exam. the response was the students scores on the exam.

a) What is the population of interest?

b) Can we make population inferences? if so did you need to make any assumptions?

c) Can we make casual inferences? that is can we conclude that any difference in team scores was caused by the difference in teaching styles?

Reference no: EM1393314

Questions Cloud

How social media must be used in workplace : Explain if you believe social media must be used in workplace and how it must be used. Are there difference between males and females in how we listen to each other.
Screen for mutants caused by autosomal recessive mutation : Assume if you were working with an organism like Arabidopsis, Drosophila, or any diploid organism that requires to use sexual reproduction to produce offspring.
Randomly selected sale-defining the events : The percentages of cones sales for chocolate, strawberry, and vanilla, are 75%, 60%, and 40%, respectively. For a randomly selected sale, define the following events:
Unexpected roles for women in story of stone by cao xue qin : Which two women in The Story of Stone by Cao Xue Qin take on the most unexpected roles for women in that time period?
Inferences and assumptions : An experiment was conducted to compare the effects of two teaching styles for grade 12 mathematics. the individuals in experiment were grade 12 math students from one particular high school.
Recessive tryptophan requiring mutation in a mat : Assume you have isolated a new recessive tryptophan-requiring mutation in a MAT? yeast strain. You cross this mutant to a MAT? trp1 trp3 strain.
Run a regression of the percent change in gdp : Explain what the Durbin-Watson statistic from regression indicates and Plot the residuals against time and comment on whether there is a seasonal pattern.
Rejecting the null in favor of the alternative hypothesis : What is the smallest level of significance at which you could reject the null in favor of the alternative hypothesis?
Surface renewal theory : Surface renewal theory predicts that the mass transfer coefficient is directly proportional to the square root of the molecular diffusivity.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Calculating three-period moving average

Calculate a 3-period moving average for period 7. Compute the MAD of the forecast.

  Calculating the regression constants

The researcher was interested in how well what he/she manipulated predicts how happy subjects feel at the end of the procedure. Using the data below, calculate the regression constants and present the equation for the regression line.

  Explain finding value of test statistic and p-value

Explain finding value of test statistic and P-value also understand the result. At the .01 significance level can we compute that the mean fare has increased.

  Areas of the associated venn diagram

A and B are two intersecting sets, and a, b, ab, and x represent the usual symbols for the number of elements contained in the four defined areas of the associated Venn Diagram. Find the values of ab and a if:

  Difference between dependent and independent samples

What is the difference between dependent and independent samples? Discuss differences is statistical treatment, statistical power, and data management.

  Type of perfume produced to maximize the net profit

A monthly budget of $100,000 is available for both advertising and purchase of the fragrances. Develop and solve a linear optimization model to determine how much of each type of perfume should be produced to maximize the net profit.

  Finding the percentile

Scores on a test are normally distributed with a mean of 60.9 and a standard deviation of 12. Find P81, which separates the bottom 81% from the top 19%.

  Define hypothesis testing with one way anova and tukey test

Perform pair wise comparisons of the treatment means by computing a Tukey simultaneous 95 percent confidence interval for each of the pair wise differences μ1 - μ2, μ2 - μ3, and μ2 - μ3. Which type of program content results in the worst mean bran..

  Confidence interval for the population mean

Determine the 95% confidence interval for the population mean, based on the sample mean.

  Determining the marginal density

On randomly selected day, let X and Y, respectively, be proportions of time that the drive-in and walk-in facilities are in use. Determine the marginal density of X.

  Question on normal distribution and z-score

The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.

  What was the mean processing time before training

The data below shows the time to process an inpatient admission, before and after a system usage training session was given.  The following hypotheses were formulated for this study.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd