Team 2 Recap Lesson 5 & 6 by Del Ho https://padlet.com/dolphineho/mbm9hgrkinx2obpv en-us 2020-12-03 13:14:05 UTC 2026-01-20 01:24:47 UTC hello@padlet.com dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507500 An entrepreneur is considering the purchase of a coin-operated laundry. The present owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75. A sample of 30 days reveals a daily average revenue of $625. If you were to test the null hypothesis that the daily average revenue was $675, which test would you use?]]> 2020-12-03 13:14:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507500 dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507503 A manager of the credit department for an oil company would like to determine whether the average monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the average owed is $83.40 with a sample standard deviation of $23.65. If you wanted to test whether the auditor should conclude that there is evidence that the average balance is different from $75, which test would you use?]]> 2020-12-03 13:14:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507503 dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507504 The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses to test are:]]> 2020-12-03 13:14:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507504 dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507506 The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30 with a standard deviation of 5 years. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. Suppose she found that the sample mean was 30.45 years and the sample . What is the p value associated with the test statistic?]]> 2020-12-03 13:14:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507506 dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507507 The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses to test are:]]> 2020-12-03 13:14:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507507 dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507508 56. A manager of the credit department for an oil company would like to determine whether the average monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the average owed is $83.40 with a sample standard deviation of $23.65. If you wanted to test whether the auditor should conclude that there is evidence that the average balance is different from $75, which test would you use?]]> 2020-12-03 13:14:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/983507508 Keith: https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986169974 The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses to test are:

H0 = 30
H1 > 30

]]> 2020-12-04 00:37:27 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986169974 Umairah's Ans https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986171555 Hypotheses Test:
H0: Mean age of customers is 30 (m=30) 
H1: Mean age of customers more than 30 (m>30) 

]]> 2020-12-04 00:38:11 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986171555 (Jia hao) A manager of the credit department for an oil company would like to determine whether the average monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the average owed is $83.40 with a sample standard deviation of $23.65. If you wanted to test whether the auditor should conclude that there is evidence that the average balance is different from $75, which test would you use? https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986173775 Use the z-test]]> 2020-12-04 00:39:12 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986173775 Sandrea https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986176562 A manager of the credit department for an oil company would like to determine whether the average monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the average owed is $83.40 with a sample standard deviation of $23.65. If you wanted to test whether the auditor should conclude that there is evidence that the average balance is different from $75, which test would you use?

(Oil company) Z test]]> 2020-12-04 00:40:27 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986176562 Umairah https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986178114 Oil company should use z-test

]]> 2020-12-04 00:41:06 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986178114 Keith: https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986179825 An entrepreneur is considering the purchase of a coin-operated laundry. The present owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75. A sample of 30 days reveals a daily average revenue of $625. If you were to test the null hypothesis that the daily average revenue was $675, which test would you use?

Z test

]]> 2020-12-04 00:41:49 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986179825 Sandrea https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986180470 The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30. If so, she plans to alter the entertainment to appeal to an older crowd. If not, no entertainment changes will be made. The appropriate hypotheses to test are:

(Local night club)
H0: Population mean is 30 (mu = 30)
H1: Population mean is larger than 30 (mu = > 30)
]]> 2020-12-04 00:42:07 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986180470 Jia hao https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986181137 H0: Mean age of customer is 30 (mu = 30)
H1: Mean age of customer more than 30 (mu > 30)]]> 2020-12-04 00:42:26 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986181137 Sandrea https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986187824 A manager of the credit department for an oil company would like to determine whether the average monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the average owed is $83.40 with a sample standard deviation of $23.65. If you wanted to test whether the auditor should conclude that there is evidence that the average balance is different from $75, which test would you use?

Z test.]]> 2020-12-04 00:45:25 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986187824 Jia hao https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986189270 Coin operation laundry.
Use the z-test]]> 2020-12-04 00:46:06 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986189270 Umairah https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986193652 Coin operated laundry should use Z-test

]]> 2020-12-04 00:48:05 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986193652 dolphineho https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986196229 2020-12-04 00:49:10 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986196229 Syakirah https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986226508 Nightclub: 
Null Hypothesis (H0): The mean age of customer is 30 
(mu = 30) 

Alternative Hypothesis (H1): The mean age of customer is not 30 
(mu ≠30) 
]]> 2020-12-04 01:02:57 UTC https://padlet.com/dolphineho/mbm9hgrkinx2obpv/wish/986226508