subject
Mathematics, 25.10.2019 00:43 Haru3

Binomial distribution problem. a study conducted by the pew research center reported that 60% of cell phone owners used their phones inside a store for guidance on purchasing decisions. a sample of 20 cell phone owners is studied.

a) what is the standard deviation of cell phone users that used their phones for guidance on purchasing decisions?

b) what is the probability that 10 or more used their phones for guidance on purchasing decisions?

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 20:00
How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.
Answers: 1
question
Mathematics, 21.06.2019 20:00
For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.
Answers: 1
question
Mathematics, 22.06.2019 00:00
Percy rides his bike 11.2 miles in 1.4 hours at a constant rate. write an equation to represent the proportional relationship between the number of hours percy rides, x,and the distance in miles, y, that he travels.
Answers: 1
question
Mathematics, 22.06.2019 00:40
Astock has a 25% probability of increasing by $10 and a 75% probability of decreasing by $5. what is the stocks expected increase or decrease?
Answers: 1
You know the right answer?
Binomial distribution problem. a study conducted by the pew research center reported that 60% of cel...
Questions
question
Mathematics, 11.03.2020 22:43
question
World Languages, 11.03.2020 22:43
Questions on the website: 13722363