Plot a histogram of sample hypnotized, Basic Statistics

Assignment Help:

Computer Project for Student Exam Scores

The data in the excel spread sheet titled Data for Hypothesis Testing in the column titled Scores from Student Population represents more than a thousand math exam scores (the entire population of test takers.) The column titled Sample Forced to 3 hrs Nightly Study Halls represents a group of students that were forced to attend math study halls for one semester and then they were retested. The column titled Sample Hypnotized to Perform Better represents students that were hypnotized and conditioned to use their spare time to study math and then retested.

Prepare a report in word, with title page, which includes graphs and calculations when appropriate to address all of the questions that are outlined below.

1.       Evaluate the Scores fromStudent Population,Forced to 3 hrs Nightly Study Halls, and Sample Hypnotized to Perform Better for OUTLIERS. The exam was on a scale of 0-100% with a 20 point bonus.

a.       Arrange the data in order and find Q1 and Q3

b.      Find the interquartile range: IQR=Q3-Q1

c.       Eliminate any data that is smaller than Q1-1.5(IQR)

or larger than  Q3+1.5(IQR). The data remaining after screening will be used for the remaining analysis.

How many outliers were in the Scores from Student Population data set?

How many outliers were in the Forced to 3 hrs Nightly Study Halls data set?

How many outliers were in the Sample Hypnotized to Perform Better data set?

2.       Determine if all three Columns of Data are normal.

a.       Report the Pearson's index PI of skewness for Scores from Population and explain the acceptable range.

b.      Report the Pearson's index PI of skewness for Sample Forced to 3 hrs Nightly Study Hallsand explain the acceptable range.

c.       Report the Pearson's index PI of skewness for Sample Hypnotized to Performand explain the acceptable range.

d.      Plot a Histogram of Scores from Population and refer to its normality.

e.      Plot a Histogram of Sample Forced to 3 hrs Nightly Study Halls refer to its normality.

f.        Plot a Histogram of Sample Hypnotized to Perform refer to its normality.

3.       Confidence intervals z scores.

a.      Calculate a 95% confidence interval from the population mean. Using the Sample Forced to 3 hrs Nightly Study Halls data. Does the mean of the Sample Forced to 3 hrs Nightly Study Halls data fall within the confidence interval of the mean of the Scores from the Population.

b.      Calculate a 95% confidence interval from the population mean. Using the Sample Hypnotized to Perform Better data. Does the mean of the Sample Hypnotized to Perform Better data data fall within the confidence interval of the mean of the Scores from the Population.

4.       Confidence intervals t scores.

a. Calculate a 95% confidence interval from the Sample Forced to 3 hrs Nightly Study Halls mean. Does the mean of the population data fall within the confidence interval of the mean of the Sample Forced to 3 hrs Nightly Study Halls.

b. Calculate a 95% confidence interval from the Sample Hypnotized to Perform Better data. Does the mean of the Population data fall within the confidence interval of the mean of the Sample Hypnotized to Perform Better.

5. Hypothesis Testing.

a. Write a null hypothesis and alternate hypothesis that would go along with the data (Sample Forced to 3 hrs Nightly Study Halls) that was collected.

b. Write a null hypothesis and alternate hypothesis that would go along with the data (Sample Hypnotized to Perform Better) that was collected.

c. Using a level of significance of α=.05 for these Two-Tailed hypothesis, make conclusions about which hypotheses to accept and which to reject using z scores.

6. Hypothesis Testing.

a. Write a null hypothesis and alternate hypothesis that would go along with the data (Sample Forced to 3 hrs Nightly Study Halls) that was collected.

b. Write a null hypothesis and alternate hypothesis that would go along with the data (Sample Hypnotized to Perform Better) that was collected.

c. Using a level of significance of α=.05 for these Two-Tailed hypothesis, make conclusions about which hypotheses to accept and which to reject using t scores.


Related Discussions:- Plot a histogram of sample hypnotized

Differentiate between sample and population, Ask question #Midifferentiate ...

Ask question #Midifferentiate between sample and populationnimum 100 words accepted#

estimate the mean chloride concentratio, An article in the Journal of Env...

An article in the Journal of Environmental Engineering (Vol. 115, No. 3,1989, pp. 608-619) reported the results of a study on the occurrence of sodium and chloride in surface str

Frequency distribution, What happens to the arithmetic mean when you add th...

What happens to the arithmetic mean when you add the same number to all the scores of the distribution?

Explain hypothesis test, Oprah Winfrey endorsed Barack Obama in the Democra...

Oprah Winfrey endorsed Barack Obama in the Democratic presidential primary. Does Oprah's endorsement make a difference? If so, we would expect support for Obama to be higher among

Byron, 1. Provide a video or peer reviewed example analyzing the article an...

1. Provide a video or peer reviewed example analyzing the article and point out the Null, Alternative Hypothesis, and explain how z-testing was used.

Study guide, I have a midterm coming up the teacher is allowing us to have ...

I have a midterm coming up the teacher is allowing us to have a front & back cheats on anything we want on it. Is there a way you guys can make me one?

Exercises problem solving, a manufacturer claims that 60% of beer drinkers ...

a manufacturer claims that 60% of beer drinkers perfer his beer. A query with 30 beer drinkers selected at random showed that 16 of them prefer this brand.(a.)Does the evidence sup

Ex. 3-12, EXERCISE 3-12 Computing Predetermined Overhead Rates and Job Cos...

EXERCISE 3-12 Computing Predetermined Overhead Rates and Job Costs [LO1,LO2, LO3, LO7] Kody Corporation uses a job-order costing system with a plantwide overhead rate based on ma

Inventory, An audit of the accounting records of Loch Ness Ltd. for the yea...

An audit of the accounting records of Loch Ness Ltd. for the year ending 30 June 2012 discovered that the ending inventory balance was over-valued by $35,000. Upon further investig

Write Your Message!

Captcha
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