Mathematics
24.05.2021 21:14
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An electric motor manufacturer has stocked 200,000 new motors in the warehouse.
An electric motor manufacturer has stocked 200,000 new motors in the warehouse. In a statistical study a random sample of 250 motors have been tested. The study showed that the motors will on average operate within the specified parameters for 3,500 hours with a standard deviation of 430 hours. It is also assumed that the data is normally distributed. a) Find the approximate number of motors that might work 4,000 hours or more
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Charley9752
4,4(97 marks)
Minute 1:
25 - 3 = 22
Minute 2:
22 - 3 = 19
Minute 3:
19 - 3 = 16
Minute 4:
16 - 3 = 13
Minute 5:
13 - 3 = 10
After 5 minutes, your cooler has 10 gallons left inside it.
25 - 3 = 22
Minute 2:
22 - 3 = 19
Minute 3:
19 - 3 = 16
Minute 4:
16 - 3 = 13
Minute 5:
13 - 3 = 10
After 5 minutes, your cooler has 10 gallons left inside it.
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