![subject](/tpl/images/cats/mat.png)
Mathematics, 10.11.2021 20:40 ultimateknight8
Jason and ben are coworkers. 5 years ago, jason was 2. 5 times as old as Ben. If Ben is currently 31 years old how old is Jason.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
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
You know the right answer?
Jason and ben are coworkers. 5 years ago, jason was 2. 5 times as old as Ben. If Ben is currently 31...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/istoriya.png)
History, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00
![question](/tpl/images/cats/mat.png)
Mathematics, 01.03.2021 03:00