lukas27
31.01.2020 •
Mathematics
Someone.
identify the simulations that correctly use numbers to represent a situation in which 55% of store shoppers already have store credit cards.
a). with 1-11 without 12-20
b). with 1-33 without 34-60
c). with 1-24 without 25-40
d). with 1-21 without 22-40
e). with 1-18 without 19-40
f). with 1-36 without 37-80
there can be multiple answers.
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Ответ:
a)
b)
Step-by-step explanation:
Lets find the percentages for each option.
a). with 1-11 without 12-20
Here there are 20 shopers. From 1 to 11, there are 11 shoppers. From 12 to 20, there are 9 shoppers. 11 of 20 have credit cards, and 11/20 = 0.55. So this option is correct
b). with 1-33 without 34-60
Here there are 60 shoppers. 1 to 33 there are 33 shoppers with store credit cards. 33/60 = 0.55. So this is also a simulation which represents this situation.
c). with 1-24 without 25-40
Here there are 40 shoppers. 1 to 24, so there are 24 shoppers with the store credit card. 24/40 = 0.6. So this is not a correct option.
d). with 1-21 without 22-40
Here there are 40 shoppers, of which 21 have the credit card. 21/40 = 0.525, so this is not one of the options
e). with 1-18 without 19-40
Here there are 40 shoppers, of which 18 have the credit card. 18/40 = 0.45, so this is not one of the options.
f). with 1-36 without 37-80
Here there are 80 shoppers, of which 36 have the credit card. 36/80 = 0.45, so this is not one of the options.
Ответ:
1+1
2
Hope this helps! :)