Typographic errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors that result in a real but incorrect word. Spell-checking software will catch nonword errors but not word errors. Human proofreaders catch 70% of word errors. You ask a fellow student to proofread an essay in which you have deliberately made 15 word errors.
(a) If the student matches the usual 70% rate, what is the distribution of the number of errors caught?
= ( ) , ( )
What is the distribution of the number of errors missed?
= ( ) , ( )
(b) Missing 7 or more out of 15 errors seems a poor performance.
What is the probability that a proofreader who catches 70% of word
errors misses 7 or more out of 15? (Round your answer to four
decimal places.)
=
1)distribution of the number of errors caught is bionomial with parameter n=15 and p=0.7
b)
\
probability that a proofreader who catches 70% of word errors misses 7 or more out of 15
=P(X>=7)=
=0.1311
Typographic errors in a text are either nonword errors (as when "the" is typed as "teh")...
Typographic errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors that result in a real but incorrect word. Spell-checking software will catch nonword errors but not word errors. Human proofreaders catch 70% of word errors. You ask a fellow student to proofread an essay in which you have deliberately made 20 word errors. What is the smallest number of misses m with P(X ≥ m) no larger than 0.05? You might...
Typing errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors that result in a real but incorrect word. Spell‑checking software will catch nonword errors but not word errors. Human proofreaders catch 70% of word errors. You ask a fellow student to proofread an essay in which you have deliberately made 10 word errors. (a) If ? is the number of word errors missed, what is the distribution of ? ? Select...
Spell‑checking software catches nonword errors that result in a string of letters that is not a word, as when "the" is typed as "teh." When undergraduates are asked to type a 250‑word essay, without spell‑checking, the number X of nonword errors has the provided distribution. Value of X 0 1 2 3 4 Probability 0.1 0.2 0.3 0.3 0.1 (a) Is the random variable X discrete or continuous? Why? Continuous, because there can be all sort of errors. Discrete, because...
4. + MBasicStat7 12.E.045. My Notes + Ask Your Teacher Spell-checking software catches "nonword errors" that result in a string of letters that is not a word, as when "the" is typed as "teh". When undergraduates are asked to write a 250-word essay (without spell-checking), the number X of nonword errors has the following distribution. Value of x Probability 0 0.05 1 0.15 2 0.29 3 0.25 4 0.26 (a) Is the random variable X discrete or continuous? Why? X...
1. The television program Nightline once asked viewers whether the United Nations should continue to have its headquarters in the United States. Two phone numbers weregiven. Viewers were asked to call one telephone number to respond “Yes” and the other to respond “No”. More than 186,000 callers responded and 67% said “No.” This isan example ofA. voluntary response sampling.B. a survey with little bias because a large SRS was used.C. a survey with little bias since someone who called would...