Math, asked by hemantkumaryadav486, 5 months ago

4.) What is the estimate of the mean time (in minutes) taken to complete the journey?
Select one:
O a. 105
b. 94
O c. 101
O d. 112​

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Answers

Answered by nihalrishi74
1

Answer:

i think so 105

Answered by amitnrw
2

Given : Time taken by 80 Drivers

To Find : estimate of the mean time (in minutes) taken to complete the journey

a. 105

b. 94

 c. 101

d. 112​

Solution:

Time interval    f (number)    Mean Time   d =(mean -105)/10   f.d

70  - 80                 4                  75                      -3                      -12

80  - 90                10                 85                      -2                      -20

90  - 100               14                 95                      -1                      -14

100  - 110              20                105                      0                      0

110  - 120               24               115                       1                       24

120  - 130               8                 125                      2                       16

                             80                                                                  -6

Mean = 105  +  10 x (-6)/80

= 105 -0.75

= 104.25

From given options  105 is closest option

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