Answer:
A 95% confidence interval for the difference in mean scores for the two groups. (Use iPad − Textbook) for teaching Algebra at the Middle school level shows that the range of values of our true population mean is likely to lie within.
Step-by-step explanation:
(a.) & (b) We can we say that Since the hypothesis test shows insufficient evidence and the confidence interval shows insufficient evidence of a difference in using iPads versus traditional textbooks in teaching algebra at the middle school level depicts that the 0.490 confidence level provides us with an upper and lower limit around our sample mean, and within this interval we can then be confident we have captured the population mean. The lower limit and upper limit around our sample mean tells us the range of values our true population mean is likely to lie within
(c). The figure of 0.48999 was rounded to three decimal places thus
0.48999≅ 0.490
Find attache copy of my Excel Spreadsheet for computation breakdown.
