Paried sample t test by using spss

Assignment Help Basic Statistics
Reference no: EM13109649

A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course. He realizes by looking at the scale that good interval leval data is not reflected.

Does the data reflect a significant decrease in anxiety? Analyze in SPSS and Graph.

Midterm

56

79

68

58

58

61

71

53

64

68

61

47

End of Semester

50

74

66

60

50

40

52

48

65

60

52

38

Reference no: EM13109649

Questions Cloud

Define null and alternate hypotheses : Use the 5% level of significance. (a) Define null and alternate hypotheses. (b) Determine the value of sample test statistic? (c) Determine(or estimate) P-value.
Academic response to regression equation : In a completely randomized experimental design, 18 experimental units were used for the first treatment, 10 experimental units were used for the second treatent, and 15 experimental unites were used for the first treatment.
Describe a plasmid : Describe a plasmid and its function and why plasmids are found in some microorganisms and not in others.
Explanation for sensitivity analysis : The sensitivity analysis is a simple way to access risk. In our text the author states that a common approach is to estimate NPV based upon an optimistic.
Paried sample t test by using spss : A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course.
How many of their sons would be color-blind : An achondroplastic male dwarf with normal vision marries a color-blind woman of normal height. The man's father was six-feet tall, and both the woman's parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green c..
Discussion on delphi technique method : In the Delphi technique method a panel of individuals internal and external provide feedback, the individuals may not know who is on the panel with them as they never meet in person.
What is the genotype of the parents : If purple (P) is dominant to white (p) and axial (A) is dominant to terminal (a), and in a cross of white, axial to purple, axial the ratio of offspring is 3/8 white, axial; 1/8 white, terminal; 3/8 purple, axial; 1/8 purple, terminal, then what i..
Hypothesis testing of proortions-lovastatin : State the appropriate hypotheses. Obtain a test statistic and p-value. Interpret the results at ? = .01. Is normality assured? Is the difference large enough to be important?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistical process control

ABC Corporation has been using statistical process control for several months.

  Average difference in reaction times

We are certain the the average difference in reaction times between the two light types for all golfers is between 0.27 and 7.13.

  Anova-treatments

The data in the next table resulted from an experiment that used a completely random design. Test the null hypothesis that u1 = u2 = u3, where ui represents the true mean for treament i, against the alternative that at least two of the means differ..

  Decision rule with smallest maximum opportunity loss

Decision rule which chooses alternative associated with smallest maximum opportunity loss is?

  Difference in the mean number and p-value

At the .01 significance level, is there a difference in the mean number of times men and Women order take-out dinners in a month? What is the  p -value?

  Kruskal wallis non-parametric anova

Describe what the researcher must do if one of the requirements is not met and give illustrations.

  Question on anova problem

Why do we need a new test method to compare the means of 3 or more populations? Why can't we just use a series of z-tests or t-tests to compare all of the possible pairs of population means to see if one (or more) is different?

  Hypothesis test and population mean

At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the  p- value.

  Negative expected return

Assume rf is 5% and rm is 10%. According to the SML and CAPM, an asset with a beta of -2.0 has a required return of negative 5%[=5-2(10-5)]. Can this be possoble?

  Normal distribution-probability values

Calculate the population mean and population standard deviation.

  Determine applied statistics for health care professionals

A hypothesis could be that the rate of teenage crime (13-19 year olds) 50 years ago in the United States was significantly lower than the rate of teenage crime is today.

  Which table above represents the anova problem

In this table, my research is about the average amount of money people expect to spend on attomeys when they are injured. Is there a difference, depending on type of injury? Do people expect to spend more when the injury happened in a car, on job,..

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