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Aleksandr-060686 [28]
3 years ago
5

Keith must choose a 3 letter password for a computer account. he can use any of the 26 upper case letters of the alphabet but he

cannot reprqt repeat letters. how many passwords are possible
Mathematics
1 answer:
tatyana61 [14]3 years ago
3 0
The first letter can be any of 26.
The second letter can be any of the remaining 25.
The third letter can be any of the remaining 24.

26*25*24 = 15,600 passwords are possible
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The appropriate null hypothesis is H_0: p = 0.25

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