Damagingawsomeness2
14.07.2019 •
Mathematics
How much would it cost if an item is 50.00 dollars in total but has 30 % of?
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Ответ:
To find this you multiply 50 by .7 because you will be paying for 70% of the item since it’s 30% off
Ответ:
50 x .30 equals 15.
Subtract 15 from 50 and you get your answer.
30% of off 50 is $35.00
Ответ:
0.1788
Step-by-step explanation:
As per given , we have
Let x be the random variable that represents the life of a computer.
Sample size : n= 78
Then, the z-score corresponds to x= 82.06 will be :-
[∵ ]
Required probability ( using standard z-value table ) :-
Hence, the probability that the mean of a sample of 78 computers would be less than 82.06 months = 0.1788