The Human Resources Manager of a factory tries to reduce the staffing costs by hiring and laying off assembly line workers. He needs to hire and train new workers. However, newly hired workers are not as productive as experienced workers. The delivery schedule of products is based on the belief that trainees will achieve more than 90% of the level of experienced workers within I week of hiring. It is known that experienced workers assembled 500 products per day on average. Production records of a randomly selected day for a random sample of trainees give the number of products assembled as shown below. Hypothesis testing will be performed to determine whether the delivery schedule should be further adjusted. coC 100 100 100

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Author:Amos Gilat
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The Human Resources Manager of a factory tries to reduce the staffing costs by hiring and
laying off assembly line workers. He needs to hire and train new workers. However, newly
hired workers are not as productive as experienced workers. The delivery schedule of products
is based on the belief that trainees will achieve more than 90% of the level of experienced
workers within I week of hiring. It is known that experienced workers assembled 500 products
per day on average. Production records of a randomly selected day for a random sample of
trainees give the number of products assembled as shown below. Hypothesis testing will be
performed to determine whether the delivery schedule should be further adjusted.
505 467 480 537 487 427 482 488 409 475
415 481
445
465
424
515
449
405
444 469
418 429
413
496 471
Provide your numerical answers (corrected to 4 decimal places) of the following questions to
Moodle.
a) Sample mean
b) Standard error estimate of the mean
c) Test statistic
d) p-value
Transcribed Image Text:The Human Resources Manager of a factory tries to reduce the staffing costs by hiring and laying off assembly line workers. He needs to hire and train new workers. However, newly hired workers are not as productive as experienced workers. The delivery schedule of products is based on the belief that trainees will achieve more than 90% of the level of experienced workers within I week of hiring. It is known that experienced workers assembled 500 products per day on average. Production records of a randomly selected day for a random sample of trainees give the number of products assembled as shown below. Hypothesis testing will be performed to determine whether the delivery schedule should be further adjusted. 505 467 480 537 487 427 482 488 409 475 415 481 445 465 424 515 449 405 444 469 418 429 413 496 471 Provide your numerical answers (corrected to 4 decimal places) of the following questions to Moodle. a) Sample mean b) Standard error estimate of the mean c) Test statistic d) p-value
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