s concrete cures, It gains strength. The following data represant the 7-day and 28-day strength in pounds per square inch (psi) of a certain type of concrete. Complete parts (a) through () below.. 7-Day Strength (psi), x 28-Day Strength (pei), y 5020 5220 3380 3300 2300 3330 2890 4070 4850 4620 (a) Treating the 7-day strength as the explanatory variable, x, use technology to determine the estimates of Bo and B- Bobo =(Round to one decimal place as neoded.) Bzb, = (Round to four decimal places as nooded.) (b) Compute the standard orror of the ostimate, s (Round to one decimal place as needed.) (e) A normal probability plot suggests that the residuals are normally distributed. Determine Use the answer from part (b). (Round to four decimal piaces as needed.) (d) Anormal probabity plot suggests that the residuals are nomally distributed. Test whother a linear rulation exists between 7-day strength and 28-day strength at the g=0.05 level of significance. State the null and alternative hypotheses. Chonse the corect answer below. O A. Ho: BoO OB. Hg: B1 =0 H: B0 OC. Hg: B =o OD. Ho: Bo =0 H: Bo0
s concrete cures, It gains strength. The following data represant the 7-day and 28-day strength in pounds per square inch (psi) of a certain type of concrete. Complete parts (a) through () below.. 7-Day Strength (psi), x 28-Day Strength (pei), y 5020 5220 3380 3300 2300 3330 2890 4070 4850 4620 (a) Treating the 7-day strength as the explanatory variable, x, use technology to determine the estimates of Bo and B- Bobo =(Round to one decimal place as neoded.) Bzb, = (Round to four decimal places as nooded.) (b) Compute the standard orror of the ostimate, s (Round to one decimal place as needed.) (e) A normal probability plot suggests that the residuals are normally distributed. Determine Use the answer from part (b). (Round to four decimal piaces as needed.) (d) Anormal probabity plot suggests that the residuals are nomally distributed. Test whother a linear rulation exists between 7-day strength and 28-day strength at the g=0.05 level of significance. State the null and alternative hypotheses. Chonse the corect answer below. O A. Ho: BoO OB. Hg: B1 =0 H: B0 OC. Hg: B =o OD. Ho: Bo =0 H: Bo0
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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