The chemical engineer you met in Quiz 1 wants to show you something he had worked on the past month. He was trying to improve on the processing time for a Clemmensen Reduction: a process used to convert aldehydes and ketones to the corresponding hydrocarbons by heating with amalgamated zinc and hydrochloric acid. By adding a catalyst, he claims that at least 10% reduction of processing times were found. He showed you the following data from an experiment. Fourteen current method processes were timed, and then a dozen replicates from his proposed catalyst. Current 288 274 321 220 376 308 290 336 301 198 283 300 324 328 Proposed 274 315 220 258 308 318 336 310 198 332 300 263 Test the chemical engineer's claim that a 10% reduction from the current processing time was achieved by his proposed method. Use a 5% level of significance for your test. Assume that the current method times are representative of the true current process times.

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The chemical engineer you met in Quiz 1 wants to show you something he had worked on the past month.
He was trying to improve on the processing time for a Clemmensen Reduction: a process used to convert
aldehydes and ketones to the corresponding hydrocarbons by heating with amalgamated zinc and
hydrochloric acid. By adding a catalyst, he claims that at least 10% reduction of processing times were
found. He showed you the following data from an experiment. Fourteen current method processes were
timed, and then a dozen replicates from his proposed catalyst.
Current
288 274
321 220
376 308
290 336
301 198
283 300
324 328
Proposed
274 315
220 258
308 318
336 310
198 332
300 263
Test the chemical engineer's claim that a 10% reduction from the current processing time was achieved
by his proposed method. Use a 5% level of significance for your test. Assume that the current method
times are representative of the true current process times.
Transcribed Image Text:The chemical engineer you met in Quiz 1 wants to show you something he had worked on the past month. He was trying to improve on the processing time for a Clemmensen Reduction: a process used to convert aldehydes and ketones to the corresponding hydrocarbons by heating with amalgamated zinc and hydrochloric acid. By adding a catalyst, he claims that at least 10% reduction of processing times were found. He showed you the following data from an experiment. Fourteen current method processes were timed, and then a dozen replicates from his proposed catalyst. Current 288 274 321 220 376 308 290 336 301 198 283 300 324 328 Proposed 274 315 220 258 308 318 336 310 198 332 300 263 Test the chemical engineer's claim that a 10% reduction from the current processing time was achieved by his proposed method. Use a 5% level of significance for your test. Assume that the current method times are representative of the true current process times.
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