Question

a) A survey of recent first-time home buyers found that 45% of them plan to upgrade...

a) A survey of recent first-time home buyers found that 45% of them plan to upgrade to a bigger house within 5 years. You randomly select 30 recent first-time home buyers and ask them whether they plan to upgrade to a bigger home within 5 years.

Use the normal approximation and the mean and standard deviation you found above to find the probability that more than 20 of the recent first-time home buyers plan to upgrade to a bigger home within 5 years. Leave your answer as a decimal with 4 decimal places.

b) A survey of recent first-time home buyers found that 45% of them plan to upgrade to a bigger house within 5 years. You randomly select 30 recent first-time home buyers and ask them whether they plan to upgrade to a bigger home within 5 years.

Use the normal approximation and the mean and standard deviation you found above to find the probability that less than 12 of the recent first-time home buyers plan to upgrade to a bigger home within 5 years. Leave your answer as a decimal with 4 decimal places.

c) A survey of recent first-time home buyers found that 45% of them plan to upgrade to a bigger house within 5 years. You randomly select 30 recent first-time home buyers and ask them whether they plan to upgrade to a bigger home within 5 years.

Use the normal approximation and the mean and standard deviation you found above to find the probability that exactly 14 of the recent first-time home buyers plan to upgrade to a bigger home within 5 years. Leave your answer as a decimal with 4 decimal places.

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
1) A survey of recent first-time home buyers found that 45% of them plan to upgrade...
1) A survey of recent first-time home buyers found that 45% of them plan to upgrade to a bigger house within 5 years. You randomly select 30 recent first-time home buyers and ask them whether they plan to upgrade to a bigger home within 5 years. Determine if  we can use the normal approximation to the binomial distribution. What is the standard deviation that we will use for this approximation? Round your answer to the tenths place.
A survey of first-time home buyers found that the sample mean annual income was $46,000. Assume...
A survey of first-time home buyers found that the sample mean annual income was $46,000. Assume that the survey used a sample of 25 first-time home buyers and that the sample standard deviation was $1,100. Compute and explain a 95% confidence interval estimate of the population mean. Show you work
A survey of first-time home buyers found that the sample mean annual income was $43,300. Assume...
A survey of first-time home buyers found that the sample mean annual income was $43,300. Assume that the survey used a sample of 26 first-time home buyers and that the sample standard deviation was $1,200. Compute and explain a 90% confidence interval estimate of the population mean.
in a recent poll 45% of survey respondents said that if they would prefer the child...
in a recent poll 45% of survey respondents said that if they would prefer the child to be a boy. suppose you conducted a survey of 190 randomly selected students on your campus and find that 87 of them would prefer a boy a) use the normal approximation to the binomial to approximate the probability that in a random sample of 190 students at least 87 would prefer a boy assuming the true percentage is 45% b) does this result...
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
1. A survey of first-time homebuyers found that the sample mean annual income was $46,000. Assume...
1. A survey of first-time homebuyers found that the sample mean annual income was $46,000. Assume that the survey used a sample of 25 first-time home buyers and that the sample standard deviation was $1,100. Compute and explain a 95% confidence interval estimate of the population mean. 2. A telephone poll of 950 American adults asked: "where would you rather go in your spare time?" One response, by 275 adults, was "the Mall". Compute and explain a 99% confidence interval...
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...
a survey of U.S. adults found 58% of women believe that there is a link between...
a survey of U.S. adults found 58% of women believe that there is a link between playing violent video games and teens exhibiting violent behavior. you randomly select five U.S. women and ask them whether they believe that there is a link between playing violent video games and teens exhabiting violent behavior. find the probability that exactly one of them respond yes? find the probability that at least three of them respond yes?
In a recent survey of high school students, it was found that the amount of time...
In a recent survey of high school students, it was found that the amount of time spent on reading books per week was normally distributed with a mean of 28 minutes. Assume the distribution of weekly reading time follows the normal distribution with a population standard deviation of 2 minutes. Suppose we select a sample of 16 high school students. What can we say about the shape of the distribution of the sample mean time? What can we say about...
A recent study estimates that 45% of iPhone still have their phone within 2 years of...
A recent study estimates that 45% of iPhone still have their phone within 2 years of purchasing it. Suppose you randomly select 30 iPhone users. Let random variable X denote the number of iPhone users who still have their original phone after 2 years. A) Determine the probability that between 6 and 9 iPhone users still have their original phone after 2 years. Round to 3 decimal places.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT