Questions from Business Statistics

Q: The report referenced in the previous exercise also gave data for representative

The report referenced in the previous exercise also gave data for representative samples of 250 adults in Canada and 250 adults in England. The sample mean amount of sleep on a work night was 423 minu...

Q: Do female college students spend more time watching TV than male college

Do female college students spend more time watching TV than male college students? This was one of the questions investigated by the authors of the paper “an ecological momentary assessment of the phy...

Q: The paper referenced in the Preview Example of this chapter (“mood

The paper referenced in the Preview Example of this chapter (“mood food: chocolate and Depressive Symptoms in a cross-Sectional analysis,” Archives of Internal Medicine [2010]: 699–703) describes a st...

Q: The paper “pathological Video-game Use among Youth ages 8

The paper “pathological Video-game Use among Youth ages 8 to 18: a national Study” (Psychological Science [2009]: 594–705) included the informatio...

Q: The paper “facebook Use and academic performance among college Students:

The paper “facebook Use and academic performance among college Students: a mixed-methods Study with a multiethnic Sample” (Computers in Human Behavior [2015]: 265–272) describes a survey of a sample o...

Q: Use the information in the previous exercise to answer the following questions

Use the information in the previous exercise to answer the following questions. a. Construct a 95% confidence interval estimate of the difference in mean time spent on Facebook for male college stude...

Q: The authors of the paper “influence of biofeedback weight bearing training

The authors of the paper “influence of biofeedback weight bearing training in Sit to Stand to Sit and the Limits of Stability on Stroke patients” (The Journal of Ph...

Q: Internet addiction has been described as excessive and uncontrolled Internet use.

Internet addiction has been described as excessive and uncontrolled Internet use. The authors of the paper “gender Difference in the relationship between internet addiction and Depression” (Computers...

Q: Reduced heart rate variability (HRV) is known to be a

Reduced heart rate variability (HRV) is known to be a predictor of mortality after a heart attack. One measure of HRV is the average normal-to-normal beat interval (in milliseconds) for a 24-hour time...

Q: The article “plugged in, but tuned out” (USA

The article “plugged in, but tuned out” (USA ToDAy, January 20, 2010) summarizes data from two surveys of kids age 8 to 18. One survey was conducted in 1999 and the...