by Dan | Sep 10, 2022 | Statistics
Companies often develop and test hypotheses about their products. For example, car manufacturers will test their cars to determine fuel efficiency and miles per gallon. To ensure that products are safe and that they perform as advertised, regulatory and...
by Dan | Sep 7, 2022 | Statistics
https://mediaplayer.pearsoncmg.com/assets/_jGvVe5Jbkm44I2D0TWEMnsz6A6Y7fin • State an example of a variable that follows a normal distribution. • State one way knowing this is useful in your professional or personal life. • Briefly elaborate on your...
by Dan | Sep 6, 2022 | Statistics
The data represents the daily rainfall (in inches) for one month. Construct a frequency distribution beginning with a lower class limit of 0.00 and use a class width of 0.20. Does the frequency distribution appear to be roughly a normal distribution?
by Dan | Aug 22, 2022 | Statistics
How to Perform Multiple Regression on Quarterly Seasonal Data in Excel (https://www.youtube.com/watch?v=A0UdlvH4lxw&feature=youtu.be) Let Yt be the sales during month t (in thousands of dollars) for a photography studio, and let Pt be the price charged for...
by Dan | Jul 27, 2022 | Statistics
Why are sampling distributions important to the study of inferential statistics? In your answer, demonstrate your understanding by providing an example of a sampling distribution from an area such as business, sports, medicine, social science, or another area...
by Dan | Jul 21, 2022 | Statistics
The Agency for Healthcare Research and Quality reported that 53% of people who had coronary bypass surgery in a recent year were over the age of 65. Fifteen coronary bypass patients are sampled. What is the probability that fewer than 8 are over the age...
