Please answer these questions! -in a survey of 100 people, 39 preferred ketchup on their hot dogs. What percent preferred ketchup?

Choices:
-39%
-39/100%
-0.39%
-3.9%

-write the decimal as a percent. 5.0

Choices:
-0.005%
-50%
-0.5%
-500%

-write the decimal as a percent. 0.6316

Choices:
-6,316%
-63.16%
-0.6316%
-6.316%

-write the decimal as a percent. 73

Choices:
-0.73%
-7.3%
-730%
-7,300%

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?