Jltra high performance concrete (UHPC) is a relatively new construction material that is characterized by strong adhesive properties with other materials. The article "Adhesive Power of Ultra High Performance Concrete from a Thermodynamic Point of View"+ described an investigation of the intermolecular forces for UHPC connected to various substrates. The following work of adhesion measurements (in mJ/m²) for UHPC specimens adhered to steel appeared in the article. 107.1 109.5 107.4 106.8 108.1 (a) Is it plausible that the given sample observations were selected from a normal distribution? It's plausible that the distribution could be normal. O It's not plausible that the distribution could be normal. (b) Calculate a two-sided 95% confidence interval for the true average work of adhesion for UHPC adhered to steel. (Round your answer to two decimal places.) 7) m³/m² Does the interval suggest that 109 is a plausible value for the true average work of adhesion for UHPC adhered to steel? O The interval suggests that 109 is a possible value for the true average. The interval doesn't suggest that 109 is a possible value for the true average. Does the interval suggest that 112 is a plausible value for the true average work of adhesion for UHPC adhered to steel? O The interval suggests that 112 is a possible value for the true average. O The interval doesn't suggest that 112 is a possible value for the true average. (c) Predict the resulting work of adhesion value resulting from a single future replication of the experiment by calculating a 95% prediction interval. (Round your answers to two decimal places.) m³/m² Compare the width of this interval to the width of the CI from (b). The two intervals are the same width. o The PI is wider than the CI. O The CI is wider than the PI.
Jltra high performance concrete (UHPC) is a relatively new construction material that is characterized by strong adhesive properties with other materials. The article "Adhesive Power of Ultra High Performance Concrete from a Thermodynamic Point of View"+ described an investigation of the intermolecular forces for UHPC connected to various substrates. The following work of adhesion measurements (in mJ/m²) for UHPC specimens adhered to steel appeared in the article. 107.1 109.5 107.4 106.8 108.1 (a) Is it plausible that the given sample observations were selected from a normal distribution? It's plausible that the distribution could be normal. O It's not plausible that the distribution could be normal. (b) Calculate a two-sided 95% confidence interval for the true average work of adhesion for UHPC adhered to steel. (Round your answer to two decimal places.) 7) m³/m² Does the interval suggest that 109 is a plausible value for the true average work of adhesion for UHPC adhered to steel? O The interval suggests that 109 is a possible value for the true average. The interval doesn't suggest that 109 is a possible value for the true average. Does the interval suggest that 112 is a plausible value for the true average work of adhesion for UHPC adhered to steel? O The interval suggests that 112 is a possible value for the true average. O The interval doesn't suggest that 112 is a possible value for the true average. (c) Predict the resulting work of adhesion value resulting from a single future replication of the experiment by calculating a 95% prediction interval. (Round your answers to two decimal places.) m³/m² Compare the width of this interval to the width of the CI from (b). The two intervals are the same width. o The PI is wider than the CI. O The CI is wider than the PI.
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![Ultra high performance concrete (UHPC) is a relatively new construction material that is characterized by strong adhesive properties with other
materials. The article "Adhesive Power of Ultra High Performance Concrete from a Thermodynamic Point of View"+ described an investigation of
the intermolecular forces for UHPC connected to various substrates. The following work of adhesion measurements (in mJ/m²) for UHPC
specimens adhered to steel appeared in the article.
107.1 109.5 107.4 106.8 108.1
(a) Is it plausible that the given sample observations were selected from a normal distribution?
O It's plausible that the distribution could be normal.
O It's not plausible that the distribution could be normal.
(b) Calculate a two-sided 95% confidence interval for the true average work of adhesion for UHPC adhered to steel. (Round your answers
to two decimal places.)
1) mJ/m²
Does the interval suggest that 109 is a plausible value for the true average work of adhesion for UHPC adhered to steel?
The interval suggests that 109 is a possible value for the true average.
O The interval doesn't suggest that 109 is a possible value for the true average.
Does the interval suggest that 112 is a plausible value for the true average work of adhesion for UHPC adhered to steel?
O The interval suggests that 112 is a possible value for the true average.
O The interval doesn't suggest that 112 is a possible value for the true average.
(c) Predict the resulting work of adhesion value resulting from a single future replication of the experiment by calculating a 95%
prediction interval. (Round your answers to two decimal places.)
_mJ/m²
2
Compare the width of this interval to the width of the CI from (b).
O The two intervals are the same width.
O The PI is wider than the CI.
o The CI is wider than the PI.
(d) Calculate an interval for which you can have a high degree of confidence that at least 95% of all UHPC specimens adhered to steel will
have work of adhesion values between the limits of the interval. (Round your answers to two decimal places.)
mJ/m²](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc781781c-178e-40a8-bd6a-be56babe6242%2F0c8f8e6e-8ec2-4c87-8d6f-3dc39183569c%2F3k3p6qg_processed.png&w=3840&q=75)
Transcribed Image Text:Ultra high performance concrete (UHPC) is a relatively new construction material that is characterized by strong adhesive properties with other
materials. The article "Adhesive Power of Ultra High Performance Concrete from a Thermodynamic Point of View"+ described an investigation of
the intermolecular forces for UHPC connected to various substrates. The following work of adhesion measurements (in mJ/m²) for UHPC
specimens adhered to steel appeared in the article.
107.1 109.5 107.4 106.8 108.1
(a) Is it plausible that the given sample observations were selected from a normal distribution?
O It's plausible that the distribution could be normal.
O It's not plausible that the distribution could be normal.
(b) Calculate a two-sided 95% confidence interval for the true average work of adhesion for UHPC adhered to steel. (Round your answers
to two decimal places.)
1) mJ/m²
Does the interval suggest that 109 is a plausible value for the true average work of adhesion for UHPC adhered to steel?
The interval suggests that 109 is a possible value for the true average.
O The interval doesn't suggest that 109 is a possible value for the true average.
Does the interval suggest that 112 is a plausible value for the true average work of adhesion for UHPC adhered to steel?
O The interval suggests that 112 is a possible value for the true average.
O The interval doesn't suggest that 112 is a possible value for the true average.
(c) Predict the resulting work of adhesion value resulting from a single future replication of the experiment by calculating a 95%
prediction interval. (Round your answers to two decimal places.)
_mJ/m²
2
Compare the width of this interval to the width of the CI from (b).
O The two intervals are the same width.
O The PI is wider than the CI.
o The CI is wider than the PI.
(d) Calculate an interval for which you can have a high degree of confidence that at least 95% of all UHPC specimens adhered to steel will
have work of adhesion values between the limits of the interval. (Round your answers to two decimal places.)
mJ/m²
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