MATH 534 (MATH534)

Final Project: Regression and Correlation Analysis Use the dependent variable (labeled Y) and one of the independent variables (labeled X1, X2, and X3) in the data file. Select and use one independent variable throughout this analysis. Use Excel to perform the regression and correlation analysis to answer the following. The week 6 spreadsheet can ... helpful in this work. 1. Generate a scatterplot for the ... dependent variable (Y) and the ... independent variable (X), including the graph of t...

1. Question: Suppose a random sample of 400 is selected from a population with a standard deviation of 5. If the sample mean is 25, the 98% confidence interval to estimate the population mean is between ________. 2. Question: The point estimate of the population mean is _________. 3. Question: Suppose a random sample of 50 is drawn from a population whose standard deviation is unknown. If the sample mean is 70 and the sample standard deviation is 5, the 92% confidence interval to estimate the ...

For this discussion, create and post a 1-2 minute video describing a real-world example of whenahypothesistestcouldbeused.Yourvideoshouldalsoincludeanumericalexampleforanotherstudent to work through in their response. The example can use real data or data that you makeup, such as values for the mean, standard deviation, and sample size. Be sure to note if thestandard deviation is from the population or the sample.In your responses to other students,showtheworkand describe thestepsyou usesto solv...

Predictive analytics in business is an important application of multiple regression analysis.Generallyspeaking,whatismeantbypredictiveanalytics?Asabusinessowner,howcouldyouuseregressionanalysisand predictive analyticsto increase your company'ssales?

Suppose you are given data from a survey showing the IQ of each person interviewed and the IQof his or her mother. That is all the information that you have. Your boss has asked you to puttogether a report showing the relationship between these two variables. What could you present,and why?

1. Question: Suppose a random sample of 400 is selected from a population with a standard deviation of 5. If the sample mean is 25, the 98% confidence interval to estimate the population mean is between ________. 2. Question: The point estimate of the population mean is _________. 3. Question: Suppose a random sample of 50 is drawn from a population whose standard deviation is unknown. If the sample mean is 70 and the sample standard deviation is 5, the 92% confidence interval to estimate the ...

A company makes men's button-up dress shirts and is considering changes to itsdesign.Howmightthecompanygoaboutfindingagoodsampleofindividuals?Thesedecisions would include method of sampling, location of sampling, population toconsider,and numberin sample,inaddition toanyotherconsiderations.

1. Question: Suppose a random sample of 400 is selected from a population with a standard deviation of 5. If the sample mean is 25, the 98% confidence interval to estimate the population mean is between ________. 2. Question: The point estimate of the population mean is _________. 3. Question: Suppose a random sample of 50 is drawn from a population whose standard deviation is unknown. If the sample mean is 70 and the sample standard deviation is 5, the 92% confidence interval to estimate the ...

Consider when businesses might use confidence intervals to estimate values, such asin sales projections, marketing results, and so forth. Describe a business decision thatcould be helped with confidence intervals. Be specific! Then create a problem withnumbers from which another student could calculate a confidence interval and make adecision.

When trying to determine probabilities, one must first assess whether the variable wouldhave anormaldistribution. Usingthetoolsfromthiscourse,whataresomemethodsthatcouldbeusedtodeterminewhethera variablehasanormaldistribution?