A student is interested in whether students who study with music playing devote as much attention to their studies as do students who study under quiet conditions (he believes that studying under quiet conditions leads to better attention). He randomly participates to either the music or non-music condition and has them read and study the same passage of information for the same amount of time. Subjects are given the same 10-item test on the material. Their scores appear next. Scores on the test represent interval-ratio data and are normally distributed.

Music 6, No music 10; Music 5, No music 9; Music 6, No music 7; Music 5, No music 7; Music 6, No music 6; Music 6, No music 6; Music 7, No music 8; Music 8, No music 6; Music 5, No music 9

a) What statistical test should be used to analyze these data?

b) What are H_{0} and H_{a} for this study?

c) Conduct the appropriate analysis.

d) Should H_{0} be rejected? What should the researcher conclude?

e) If significant, compute and interpret the effect size.

f) If significant draw a graph representing the data.

g) Determine the 95% confidence interval.

4) The researcher in exercise 2 decides to conduct the same study using a within-participants design to control for differences in cognitive ability. He selects a random sample of subjects and has them study different material of equal difficulty in both the music and no-music conditions.

The study is completely counterbalanced to control for order effects. The data appear next. As before, they are measured on an interval-ration scale and are normally distributed; he believes that studying under quiet conditions will lead to better performance.

Music No Music

7 7

6 8

5 7

6 7

8 9

8 8

a) What statistical test should be used to analyze these data?

b) What are H_{0} and H_{a} for this study?

c) Conduct the appropriate analysis.

d) Should H_{0} be rejected? What should the researcher conclude?

e) If significant, compute and interpret the effect size.

f) If significant draw a graph representing the data.

g) Determine the 95% confidence interval.

- What are degrees of freedom? How are the calculated?
- What do inferential statistics allow you to infer?
- What is the General Linear Model (GLM)? Why does it matter?
- Compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?
- Why is it important to pay attention to the assumptions of the statistical test? What are your options if your dependent variable scores are not normally distributed?

6) Researchers at a food company are interested in how a new spaghetti sauce made from Green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. They are worried that the green color will adversely affect the tastiness scores. They randomly assign subjects to either green or red sauce condition. Participants indicate the tastiness of the sauce on a 10-point scale. Tastiness scores tend to be skewed. The scores follow:

RED SAUCE GREEN SAUCE

7 4

5 5

9 6

10 8

6 7

7 6

8 9

a) What statistical test should be used to analyze these data?

b) Identify H_{0} and H_{a} for this study

c) Conduct the appropriate analysis

d) Should H_{0} be rejected? What should the researcher conclude?

8) You notice in your introductory psychology class that more women tend to sit up front, and more men sit in the back. To determine whether this difference is significant, you collect data on the seating preferences for the students in your class. Data follow:

Men Women

Front of the room 15 27

Back of the room 32 19

a) What is *X*^{2}_{obt? }

b) What is the *df *for this test?

c) What is *X*^{2}_{cv?}

d) What conclusion should be drawn from these results?

2. What are degrees of freedom? How are the calculated?

3. What do inferential statistics allow you to infer?

4. What is the General Linear Model (GLM)? Why does it matter?

5. Compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?

What is company : Find a news article that discusses corporate risk and assess the risk. Submit a 1-2 paragraph risk assessment addressing the questions below. |

Average demand for carpet from the stores : The average demand for carpet from the stores that purchase from the distributor is 4500 yards per month, with a standard deviation of 900 yards. what is the probability that a customer's order will not be met during a month? |

What is the bulk volume : Given that the weight of dry sandstone sample in air is 20.0g, the weight of saturated sample in air is 22.5g, What is the bulk volume of this sample and what is its porosity |

Calculate the dagwoods optimal consumption bundle : Suppose we have Dagwood, who has a current income of $200K and expected future income of $60K. He has $50K in current wealth (i.e., ‘a' = $50K), but this is before he opens that % envelope. He has zero expected future wealth. |

What is the general linear model : What is the General Linear Model (GLM)? Why does it matter and compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other? |

Explain what is the solubility of mns in a buffer solution : What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115M HC2H3O2 - 0.505 M NaC2H3O2? For MnS, Kspa=3x10^7. |

Discusses two ways that tying salary into the performance : Having read the section discusses two ways that tying salary into the performance management system helps employee development and two ways that it hurts employee development. |

Does your view of illegal discrimination change now : Does your view of illegal discrimination change now that you have seen how disparate impact claimswork? Would you have been able to foresee this out-come? Explain. |

What is the speed of the truck when they are abreast : An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck, What is the speed of the truck when they are abreast, How far was the automobile behind the truck initially |

## Prepare a research on applied statisticsPerspective about the problem you are trying to analyze; in other words, you should review the literature concerning your subject. The library or the web will be a good source of information. |

## Which country should import bed linensSuppose South Korea can produce 100 computer chips with 10 hours of labor input and 50 bed linens with 6 hours of labor input. The US can produce 100 computer chips with 8 hours of labor input and 50 bed linens with 4 hours of labor input. |

## Unemployment surveyFind a statistics study on Unemployment and explain the five-step process of the study. |

## Define the hypothesis and find the standard errorDefine the hypothesis and find the standard error of the difference in the means also find the test statistic - Determine the required sample size to be able to use a 99% confidence interval. |

## Estimate the model time series and cross-sectionExplain what type of data you would use to estimate the model - time series, cross-section, or panel data and Identify the dependent variable and the independent variables |

## What is the overall accuracy of the testA screening test for a newly discovered disease is being evaluated. In order to determine the effectiveness of the new test, it was administered to 900 workers; 150 of the individuals diagnosed with the disease tested positive. |

## Find the linear correlation coefficient for the systolicUse the Excel Analysis ToolPak to find the linear correlation coefficient for the systolic and diastolic measurements. |

## Descriptive statistics - find the relation of questionFind the relation of question with some of the factors you think important as motivators of choosing the medical profession. Why do you choose these factors? |

## Estimate for the mean hospital cost for victimswhat is the point estimate for the mean hospital cost for victims who wore seat belts and construct and interpret 99percent conf interval estimate for the mean hospital costs for accident victims who wore seatbelts. |

## Positive relationship between advertising and demandWe expect to have a positive relationship between Advertising and Demand. |

## Write your own newspaper articleWrite your own newspaper article for the study with at least one appropriate table or graph. |

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