Question

a national survey found that 46% of adults ages 25-29 had only a cell phone and...

a national survey found that 46% of adults ages 25-29 had only a cell phone and no landlines. Supposed that four 25-29 years olds are randomly selected. What is the probability that at least one of these adults has only a cell phone and no landline?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A national survey found that ​56% of adults ages​ 25-29 had only a cell phone and...
A national survey found that ​56% of adults ages​ 25-29 had only a cell phone and no landline. Suppose that three ​25-29-year-olds are randomly selected. Complete parts a through c below. ​a) What is the probability that all of these adults have only a cell phone and no​ landline? ​(Round to four decimal places as​ needed.) b) What is the probability that none of these adults have only a cell phone and no landline? ​(Round to four decimal places as​...
5)A national survey suggests that 25% of U.S. adults have a landline in their residence, 84%...
5)A national survey suggests that 25% of U.S. adults have a landline in their residence, 84% have a cell phone, and 21% have both. define the following: L= person has a landline in their residence, C= person has a cell phone. Answer the following questions using proper probability notation. a) What is the probability that a randomly selected U.S. adult has a landline or a cell phone? B)What is the probability that a randomly selected U.S. adult does not have...
A survey of adults found that 56% of those who text on a cell phone receive...
A survey of adults found that 56% of those who text on a cell phone receive unwanted spam and messages. You randomly pick 100 adults who text on a cell phone. Find the probability that the number of people who received spam and unwanted messages is exactly 60.
A survey of adults ages? 18-29 found that 93?% use the Internet. You randomly select 132...
A survey of adults ages? 18-29 found that 93?% use the Internet. You randomly select 132 adults ages? 18-29 and ask them if they use the Internet.? (a) Find the probability that exactly 125 people say they use the Internet.? (b) Find the probability that at least 125 people say they use the Internet.? (c) Find the probability that fewer than 125 people say they use the Internet. ?(d) Are any of the probabilities in parts? (a)-(c) unusual? Explain.
A survey of adults ages​ 18-29 found that 85​% use the Internet. You randomly select 157...
A survey of adults ages​ 18-29 found that 85​% use the Internet. You randomly select 157 adults ages​ 18-29 and ask them if they use the Internet. ​(a) Find the probability that exactly 134 people say they use the Internet. ​(b) Find the probability that at least 134 people say they use the Internet. ​(c) Find the probability that fewer than 134 people say they use the Internet. ​(d) Are any of the probabilities in parts​ (a)-(c) unusual? Explain. Use...
In a recent year, a study found that 77% of adults ages 18–29 had internet access...
In a recent year, a study found that 77% of adults ages 18–29 had internet access at home. A researcher wanted to estimate the proportion of undergraduate college students (18–29 years) with access, so she randomly sampled 187 undergraduates and found that 165 had access. Estimate the true proportion with 99% confidence. Round intermediate answers to five decimal places. Round your final answer to one decimal place.
in a survey of 3303 adults ages 57 through 85 years, it was found that 80.2%...
in a survey of 3303 adults ages 57 through 85 years, it was found that 80.2% of them used at least one prescription medication. Complete parts 1-3 below 1: how many of the 3303 subjects used at least one prescription medication? 2: construct a 90% confidence interval estimate of the percentage of adults ages 57 through 85 years who use at least one prescription medication 3: what do the results tell us about the proportion of The adults who use...
A recent survey found that 72% of all adults over 50 own cell phones. You randomly...
A recent survey found that 72% of all adults over 50 own cell phones. You randomly select 43 adults over 50, and ask if he or she owns a cell phone. Find the mean number of cell phones owned by a sample of 43 adults over 50 years old. Round to two decimal places
A survey of 25 randomly selected customers found the ages shown​ (in years). The mean is...
A survey of 25 randomly selected customers found the ages shown​ (in years). The mean is 31.04 years and the standard deviation is 9.00 years.​ a) Construct a 99​% confidence interval for the mean age of all​ customers, assuming that the assumptions and conditions for the confidence interval have been met. ​b) How large is the margin of​ error? ​c) How would the confidence interval change if you had assumed that the standard deviation was known to be 9.0 ​years?
A survey of 25 randomly selected customers found the ages shown​ (in years). The mean is...
A survey of 25 randomly selected customers found the ages shown​ (in years). The mean is 32.88 years and the standard deviation is 8.96 years. ​a) Construct a 90​% confidence interval for the mean age of all​ customers, assuming that the assumptions and conditions for the confidence interval have been met. ​b) How large is the margin of​ error? ​c) How would the confidence interval change if you had assumed that the standard deviation was known to be 9.0 ​years?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT