Statistics homework help

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MAINSIMILAR QUESTIONSTIPSTIPS – TEACHER VIEW

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Statistics homework help

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Use the Excel file titled, General-Electric that is posted on GAP in the DataFile folder under the Supplementary Course Material section and upload it into SPSS. Complete the following tasks and copy your results in a word document and submit your report.

and upload it to SPSS. This file contains GE’s daily stock market data covering the period of 12/13/2010 to 12/11/2018. The file contains a total of 2013 daily transaction records including date, opening price of the GE stock for the day, highest price, lowest price, closing price, closing price adjusted for dividends, and the number of stocks traded (volume).

Use the explore command in SPSS and explain whether the trading volume of the stock is normally distributed. Make sure to discuss, Skewness, kurtosis, results from the test of normality as well as the Q-Q plots.

Select a random Sample of exactly 125 observations. Then run the descriptive command and calculate the mean and standard deviation of the sample. Repeat this process (i.e., selection of a random sample and descriptive command) exactly 75 times. Hint: Use SPSS syntax to repeat the command. List both values (mean and the standard deviation) in a new excel file with proper column headings.

Upload the newly created excel file into SPSS and create a histogram of both the calculated means and standard deviations.

Run the explore command similar to what you did in step 1 for both variables and make your observations. Does the Central Limit Theorem (CLT) apply to both measurements?

Suppose you believe that the true average daily trade volume for General Electric stock is 49,829,719 shares. Based on a recent sample you have also calculated a standard deviation of 21,059,637 shares. Considering a 95% confidence level, what is the minimum required sample size if you like your sampling error to be limited to 10,000,000 shares. What sample size would offer a sampling error of not more than 20,000,000 shares?

Given the information in item (5) above conduct a one-population test of hypothesis for the mean and determine if the null hypothesis should be rejected or not rejected.

Compare your findings in items (5) and (6) above and argue if you can make a generalization.

Is there a statistically significant difference between the average trading volume in 2017 and 2018? Hint: While technically, this can be carried out as a paired sample t-test since volume data are reported for the same stock, we will treat this as independent samples. Complete your calculations by hand assuming M2017=46108055, S2017=34099055, n2017=251, M2018= 87241844, S2018=50977722, n2018=238.

Repeat the test, this time by using SPSS. Hint: Create a new grouping variable for 2017 and 2018 and use it to run your test.

 

Statistics homework help

Statistics homework help.

Instructions
Hypothesis Testing
Imagine that you are studying automobile buyers who choose to replace their current car near the end of its expected lifetime. Specifically, you are interested in how many different dealers late purchasers visit.
Let µ be the mean number of dealers visited by all late replacement buyers. A random sample of 100 late replacement buyers yields a mean and standard deviation of the number of dealers visited of x¯ = 4.32 and s = 0.67.
The test statistic and the corresponding p-values are listed below:
 Test Statistic  p value 4.78  < 0.0001
Tasks:

Set up null and alternative hypotheses needed if we wish to attempt to provide evidence that µ differs from 4 dealers.
Identify the test you will apply to test the hypothesis. Justify your choice.
Choose an appropriate level of significance.
Define type I and II errors in the context of your hypotheses.
State your decision regarding the hypothesis.
State the conclusion.

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Submission Details:

Submit a Microsoft Word document that contains your responses to assignment questions, using APA style.
Name your document SU_BUS7200_W1_ LastName_FirstInitial.doc

 
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Statistics homework help

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