We wish to estimate what percent of adult residents in a certain county are parents. Out of 200 adult residents sampled, 28 had kids. Based on this, construct a 90% confidence interval for the proportion p of adult residents who are parents in this county. Express your answer in tri-inequality form. Give your answers as decimals, to three places. < p < Express the same answer using the point estimate and margin of error. Give your answers as decimals, to three places. p = ±±   *Note the last part left two spaces but didn't copy well.

Question

We wish to estimate what percent of adult residents in a certain county are parents. Out of 200 adult residents sampled, 28 had kids. Based on this, construct a 90% confidence interval for the proportion p of adult residents who are parents in this county.

Express your answer in tri-inequality form. Give your answers as decimals, to three places.

< p < Express the same answer using the point estimate and margin of error. Give your answers as decimals, to three places.

p = ±±

 

*Note the last part left two spaces but didn't copy well. 

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Hypothesis Testing

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: More arrows Consider our archer from Exercise 18.a) How many bull’s-eyes do you expect her to get?b)...

A: Click to see the answer

Q: Oakland passengers The scatterplot below shows thenumber of passengers departing from Oakland (CA)ai...

A: a. The scatterplot for passengers and years since 1990 is given. In addition the residual plot for y...

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based...

A: Solution: From the given information, confidence level is 0.99, σ=22.7 dollars and E=2.

Q: In a study of government financial aid for college students, it becomes necessary to estimate the pe...

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is...

Q: Polygraphs Lie detectors are controversial instruments, barred from use as evidence in many courts. ...

A: A polygraph test can detect 65% of lies, but incorrectly identifies 15% of the true statement as lie...

Q: Which of the following most accurately describes a correlation coefficient of 0.83 between height (i...

A:   Here, variables are height (inch X), weight (lbs Y), and correlation coefficient of (r) is 0.83. 

Q: Use the confidence level and sample data to find a confidence interval for estimating the population...

A: From the given information, the sample size is 46 and the sample average is 23.1 pounds. The populat...

Q: Roller coasters Roller coasters get all their speed bydropping down a steep initial incline, so it m...

A: (a)Both variables height or the drop and speed or roller coasters are quantitative variables so it i...

Q: Assume that a sample is used to estimate a population mean μμ. Find the 99% confidence interval for ...

A: Click to see the answer

Q: West High wants to estimate the number of students who drive to school. Answer the following. ...

A: a). Since, a sample is a part of the population and that represents the population. Therefore, the n...

Q: Express the confidence interval (36.5%,53.5%) in the form of ˆp±E      % ±     %

A: Obtain the point estimate of the proportion. The point estimate of the proportion is obtained below:...

Q: You may need to use the appropriate technology to answer this question. The following table contains...

A: Click to see the answer

Q: Out of 600 people sampled, 402 had kids. Based on this, construct a 90% confidence interval for the ...

A: Click to see the answer

Q: The segmented bar graphs below depict data from the NAAL (National Assessment of Adult Literacy) con...

A: Solution: There exists relationship among volunteerism-never, Less than once per week and Once per w...

Q: Random variables Given independent random variableswith means and standard deviations as shown, find...

A: Click to see the answer

Q: Following is the probability distribution for the age of a student at a certain public high school. ...

A: Click to see the answer

Q: Engines, again Horsepower is another measure com-monly used to describe auto engines. Here are the s...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Statistics Question

A: Click to see the answer

Q: sports car gas mileages: 17291519172316242618182824241915202219192121191518181623   Let σ be the pop...

A: Click to see the answer

Q: The number of industrial injuries per working week in a particular factory is known to follow a Pois...

A: Obtain the probability that in a particular week there will be less than 2 accidents.   The probabil...

Q: Blackjack: In single-deck casino blackjack, the dealer is dealt two cards from a standard deck of 52...

A: Click to see the answer

Q: Sample spaces For each of the following, list the samplespace and tell whether you think the events ...

A: a. Two coins are tossed and to record the order of heads and tails. Sample space: The set of all pos...

Q: Researchers conducted a study to determine whether magnets are effective in treating back pain. The ...

A: Click to see the answer

Q: Express the confidence interval 27%±6.9% 27%±6.9% in the form of a trilinear inequality.% &lt;p&lt;&...

A: Consider that p is the population proportion The given confidence interval is:

Q: In exercise 7 a sales manager collected the following data on x = annual sales and y = years of expe...

A: It is given that x and y are defined as annual sales and years of experience, respectively. The esti...

Q: What price do farmers get for their watermelon crops? In the third week of July, a random sample of ...

A: The provided information is:

Q: Stats test, Part II Suppose your Statistics professorreports test grades as z-scores, and you got a ...

A: Click to see the answer

Q: Carnival A carnival game offers a $100 cash prize foranyone who can break a balloon by throwing a da...

A: Click to see the answer

Q: H0 :  µ= 60 H1 :  µ &gt; 60  X̄=62    σ=10    n=100 and α=.05 The computed value of  Z (Zc ) or  t (...

A: Click to see the answer

Q: Residuals Suppose you have fit a linear model to somedata and now take a look at the residuals. For ...

A: Click to see the answer

Q: Blood The American Red Cross says that about 45% ofthe U.S. population has Type O blood, 40% Type A,...

A: Click to see the answer

Q: What design? Analyze the design of each researchexample reported. Is it a sample survey, an observat...

A: Click to see the answer

Q: In California, we need more rain to sustain the health of our natural environment, argriculture, and...

A: Click to see the answer

Q: 0 9 10 10 10 4 12 7 11 5 0 8 3   a. To compute the confidence interval use a ? t z  distribution....

A: Click to see the answer

Q: Slot machine A slot machine has three wheels thatspin independently. Each has 10 equally likely symb...

A: a. Find the probability of getting 3 lemons. The given information is that a slot machine contains t...

Q: The ages of the winners of a cycling tournament are approximately​ bell-shaped. The mean age is 27.1...

A: Click to see the answer

Q: IQs revisited Based on the Normal model N(100, 16)describing IQ scores, what percent of people’s IQs...

A: Given: Population mean (µ) = 100 Standard deviation (σ) = 16 Consider, X be the random variable that...

Q: A class has 25 students. In how many different ways can six students form a group for an​ activity? ...

A: Click to see the answer

Q: A newsgroup is interested in constructing a 99% confidence interval for the proportion of all Americ...

A: Click to see the answer

Q: Wardrobe In your dresser are five blue shirts, three redshirts, and two black shirts.a) What is the ...

A: Click to see the answer

Q: The manager at a local grocery store thinks customers might benefit from a self-checkout aisle becau...

A: The sample standard deviation for the accompanying sample of 30 grocery store customer wait times ca...

Q: A smart phone manufacturer is interested in constructing a 99% confidence interval for the proportio...

A: Click to see the answer

Q: Least squares I Consider the four points (10, 10), (20,50), (40, 20), and (50,80). The least squares...

A: Click to see the answer

Q: Cell phones in the home A survey found that 73% ofAmericans have a home phone, 83% have a cell phone...

A: a) The given information is that, 73% of the Americans have a home phone and 83% have a cell phone a...

Q: A recent study compared the time spent together by single- and dual-earner couples. According to the...

A: State the hypotheses. That is, there is no evidence to conclude that the single-earner couples on a...

Q: OHaganBooks.com has launched a subsidiary, GnuYou.com, which sells beauty products online. Most prod...

A: The provided information are: For skin creams: Population mean (µ) = 34,000 Population standard devi...

Q: A repeated-measures study comparing two treatments with a sample of n = 4 participants produces a me...

A: Click to see the answer

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars ...

A: Click to see the answer

Q: I need help finding the answers that go into the yellow boxes :) thank you so much!

A: Solution: Excel code or input: