Mathematics, 06.03.2020 13:39 trinidydavis
1. On the first day of ticket sales, the school sold a total of 25 adult and child tickets. Each adult
ticket costs $5 and each child ticket costs $3. The total amount earned in ticket sales was $95.
How many adult tickets were sold and how many child tickets were sold?
Answers: 3
Mathematics, 21.06.2019 21:30
80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent
Answers: 2
Mathematics, 21.06.2019 21:30
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?
Answers: 1
1. On the first day of ticket sales, the school sold a total of 25 adult and child tickets. Each adu...
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