Consider The Accompanying Data On Flexural Strength Mpa For Concrete Beams Of A Certain Type 6 8 6 3 116 118 74 113 7 1 (16.49 KiB) Viewed 22 times
Consider The Accompanying Data On Flexural Strength Mpa For Concrete Beams Of A Certain Type 6 8 6 3 116 118 74 113 7 2 (18.56 KiB) Viewed 22 times
Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type 6.8 6.3 116 118 74 113 7.0 7.7 7.3 9.7 7.2 6.3 6.8 8.1 9.0 7.0 7.9 7.3 10.7 5.0 6.5 8.2 8:7 (a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion, (Hint: Ex-219.) (Round your answer to three decimal places 6.111 ✔MPa State which estimator you used. Os x Op ON/R OF (b) Calculate a point estimate of the strength value that separates the weakest 50% of all such beams from the strongest 50% MPa State which estimator you used 03 03/7 OA OF 7
(c) Calculate a point estimate of the population standard deviation e. (Hint: Ix 1853.06.) (Round your answer to three decimal places) MPa Interpret this point estimate, This estimate describes the center of the data. This estimate describes the spread of the data. O This estimate describes the bias of the data. This estimate describes the linearity of the data which estimator did you use? 07 *E Of 07 ON/X (d) Calculate a point estimate of the proportion of all such beams whose fexural strength exceeds 10 MPa. (Hint: Think of an observation as a "success" it it exceeds 10.1 (Round your answer to three decimal places) (e) Calculate a point estimate of the population coefficient of variation /. (Round your answer to four decimal places) State which estimator you used. s/x OR ON OY OA
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