In the Counting Letters examples, the dictionary used to keep track of letter frequencies uses the count as the key.

True

False

$2$

In the Counting Letters examples, only letters found in the analyzed text have entries in the dictionary.

True

False

$3$

The analysis of the complete$$I Have a Dream$$speech shows that four of the top five frequently used letters are vowels.

True

False

$4$

The codes used in Morse Code are influenced by the frequency of letter use in English communication.

True

False