![subject](/tpl/images/cats/mat.png)
Mathematics, 26.02.2021 07:30 Joesefsky
When a polling company calls a telephone number at random, there is only a 9% chance that the call reaches a live person and the survey is successfully completed. Suppose the random digit dialing machine makes 15 calls. Let X = the number of calls that result in a completed survey.
(a) Calculate and interpret the mean of X.
(b) Calculate and interpret the standard deviation of X
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 12:30
Adriano loves anime and collects toys from his favorite series.each month he gains 4 toys. if adriano has 3 toys when he starts collecting, how many does he have after 4 months
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 13:30
Which transformations could have occurred to map △abc to △a"b"c"? a rotation and a reflection a translation and a dilation a reflection and a dilation a dilation and a rotation
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:40
Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !
Answers: 1
You know the right answer?
When a polling company calls a telephone number at random, there is only a 9% chance that the call r...
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 09.09.2019 23:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2019 23:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2019 23:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 09.09.2019 23:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2019 23:30
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/es.png)
Spanish, 09.09.2019 23:30