subject
Mathematics, 30.05.2020 19:01 helvonka

#3) A survey of U. S. adults found that 69% of those who text on cell phones receive spam or unwanted messages. You randomly select 100 U. S. adults who text on cell phones. A) Determine whether you can use a normal distribution to approximate the binomial distribution. B) Find the probability that the number who receive spam or unwanted messages is exactly 70. C) Find the probability that the number who receive spam or unwanted messages is at least 70. D) Find the probability that the number who receive spam or unwanted messages is fewer than 70. E) Would any of the events in B through D be considered unusual? Justify your answer.

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 20:00
Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7
Answers: 3
question
Mathematics, 21.06.2019 21:00
Need match the functions with correct transformation. f(x) = -3x f(x) = |x-1|+3 f(x) = √(x+3) 1/2x² f(x) = (x+1)²-3 4|x| 1. compress by a factor of 1/2 2. stretch by a factor of 4 3. shift to the left 3 4. shift to the left 1 5. shift up 3 6. reflection
Answers: 1
question
Mathematics, 22.06.2019 00:20
Which of the following is equal to the square root of the cube root of 5 ? (1 point) 5 to the power of 1 over 3 5 to the power of 1 over 6 5 to the power of 2 over 3 5 to the power of 3 over 2
Answers: 1
question
Mathematics, 22.06.2019 01:00
How would you find the height of points on the circle? the topic is trigonometry.
Answers: 3
You know the right answer?
#3) A survey of U. S. adults found that 69% of those who text on cell phones receive spam or unwante...
Questions
Questions on the website: 13722367