Mathematics, 27.06.2020 03:01 jackfrost5
The Port Authority sells a wide variety of cables and adapters for electronic equipment online. Last year the mean value of orders placed with the Port Authority was $47.28, and management wants to assess whether the mean value of orders placed to date this year is the same as last year. The values of a sample of 49,896 orders placed this year are collected and recorded in the file PortAuthority.
A) At the 5% level of significance, test whether the mean value of this year’s orders differs from last year’s mean orders.
B) Port Authority also wants to determine if the gender profile of its customers has changed from last year when 65% of orders were placed by male customers. Test at 5% level.
C) At the 5% level of significance, can we conclude that the mean value of orders by male customers is higherthan the mean value of orders made by female customers?
Answers: 2
Mathematics, 21.06.2019 21:00
When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years
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Mathematics, 22.06.2019 02:30
Chosen according to the volume of oil it can haul, as shown in at a railway yard, locomotives are used to haul containers carrying the table. locomotive capacity a450 0 -750 cubic feet cg35 750-1,500 cubic feet br73 1,500-2,500 cubic feet yh61 2,500-3,500 cubic feet & the four cylindrical containers listed in the table need to be hauled. cylinder length (ft.) diameter (ft.) fill level a 40 , 12 half b 24 8 full c 16 16 full 6 12 full d match each container to the locomotive needed to haulit a450 cylinder a yh61 cylinder d
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The Port Authority sells a wide variety of cables and adapters for electronic equipment online. Last...
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