Mathematics, 13.07.2019 06:40 hajanaetowens

Cell phones and surveys ii the survey by the national center for health statistics further found that 49% of adults ages 25–29 had only a cell phone and no landline. we randomly select four 25–29-year-olds: a. what is the probability that all of these adults have a only a cell phone and no landline? b. what is the probability that none of these adults have only a cell phone and no landline? c. what is the probability that at least one of these adults has only a cell phone and no landline?

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Answer from: madi1820

The following is the solution for the problems given above:

A.The probability that all adults have only a cellphone is P(only cellphone) = 0.49 ^ 4 = 0.0576
B.If 49% only have a cellphone and no landline, then only 51% don’t have this combination of phones, so therefore: P (no one with only a cellphone) = 0.51^4 = 0.0677
C.If at least one of them has a cellphone: P (at least one with cell phone) = 1 – P(cellphone and/or landline) = 1 – (0.51)^4 = 0.9323

Answer from: kamillecronk

(a) The probability that all of these adults have a only a cell phone and no landline is (0.49)^4

(b) The probability that none of these adults have only a cell phone and no landline is (0.51)^4 .

According to the question, the survey by the national center for health statistics found that 49% of adults ages 25–29 had only a cell phone and no landline.

Probability that adults ages 25–29 had only a cell phone and no landline is P_1=0.49

Probability that adults ages 25–29 have only a cell phone and no landline is

$P_2=1-0.49\\P_2=0.51$

On selection of random 4 persons aged between 25–29-

(a) probability that all of these adults have a only a cell phone and no landline is (0.49)^4

(b) the probability that none of these adults have only a cell phone and no landline is (0.51)^4 .

Learn more more probability here:

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Answer from: Quest

the most boring thing ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.

Answer from: Quest

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.

the second means the process of making a product or service available for the consumer or business user that needs it.

mark this brainliest and i will be glad to .

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