Questions from Business Statistics

Q: The two intervals (114.4, 115.6)

The two intervals (114.4, 115.6) and (114.1, 115.9) are confidence intervals for µ = mean resonance frequency (in hertz) for all tennis rackets of a certain type. The two intervals were calculated usi...

Q: The paper “the effects of adolescent Volunteer activities on the perception

The paper “the effects of adolescent Volunteer activities on the perception of Local Society and community Spirit mediated by Self-conception” (Advanced Science and Technology Letters [2016]: 19–23) d...

Q: Students in a representative sample of 65 first-year students selected

Students in a representative sample of 65 first-year students selected from a large university in England participated in a study of academic procrastination (“Study goals and procrastination tendenci...

Q: The paper referenced in the previous exercise also reported that for a

The paper referenced in the previous exercise also reported that for a representative sample of 68 second-year students at the university, the sample mean procrastination score was 41.00 and the sampl...

Q: The Bureau of Alcohol, Tobacco, and Firearms (ATF)

The Bureau of Alcohol, Tobacco, and Firearms (ATF) has been concerned about lead levels in California wines. In a previous testing of wine specimens, lead levels ranging from 50 to 700 parts per billi...

Q: The paper “patterns and composition of weight change in college freshmen

The paper “patterns and composition of weight change in college freshmen” (College Student Journal [2015]: 553–564) reported that the freshman year weight gain for the students in a representative sam...

Q: Give as much information as you can about the P-value

Give as much information as you can about the P-value for an upper-tailed F test in each of the following situations. a. df1 = 4, df2 = 15, F = 5.37 b. df1 = 4, df2 = 15, F = 1.90 c. df1 = 4, df2 =...

Q: Employees of a certain state university system can choose from among four

Employees of a certain state university system can choose from among four different health plans. Each plan differs somewhat from the others in terms of hospitalization coverage. Four random samples o...

Q: The authors of the paper “Age and Violent Content Labels Make

The authors of the paper “Age and Violent Content Labels Make Video Games Forbidden Fruits for Youth” (Pediatrics [2009]: 870–876) carried out an...

Q: The authors of the paper “Reading Subtitles and Taking Enotes While

The authors of the paper “Reading Subtitles and Taking Enotes While Learning Scientific Materials in a Multimedia Environment” (Educational Technology and Society [...