11). A sample of 400 racing cars showed that 80 of them cost over $700,000. What is the 99% confidence interval for the true proportion of racing cars that cost over $700,000? (Be sure to show all of your work, including formulas, and round your final answer to 3 decimal places).

11). A sample of 400 racing cars showed that 80 of them cost over $700,000. What is the 99% confidence interval for the true proportion of racing cars that cost over $700,000? (Be sure to show all of your work, including formulas, and round your final answer to 3 decimal places).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: 2. Given: n=80, a = 15, level of confidence is 92%. What is the margin of error of the given data?

Q: Out of a sample of 600 adults aged 18 to 30, 162 still lived with their parents. Based on this,…

Q: The student government association at a university wants to estimate the percentage of the student…

A: As per guideline expert have to answer first question only.

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,140…

A: given data n1 = 144140 x1 = 84545p^1 = x1n1 = 84545144140 = 0.5865 n2 = 216298 x2 = 126501p^2…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

Q: A poll of n = 500 randomly selected elementary school students resulted in 110 of them stating…

Q: If n=31, ¯xx¯(x-bar)=38, and s=4, find the margin of error at a 95% confidence level Give your…

A: Here, the population standard deviation is unknown. Hence, t - distribution is appropriate to use as…

Q: 7. A Gallup poll indicated that 28% of Americans had confidence in U.S. banks. Interestingly, 50%…

A: Statistics is a collection, presentation, analysis, and interpretation of numerical information. The…

Q: There are many reasons adults use credit cards. A recent survey found that 66% of adults used credit…

A: 66% of adults use credit cards for convenience.Confidence level is 99% i.e., 0.99.Margin of error is…

Q: 7. Create a confidence interval for o using the following information: Ages of people driving in the…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

Q: Out of 240 sample students surveyed, 187 students are planning to take classes during the…

A: We have given that the sample size n=240 and favourable cases X=187. Sample proportion p^ = X/n.

Q: If n=28, ¯x=46x¯=46, and s=7, find the margin of error at a 95% confidence level Give your answer…

A: Given,n=28x¯=46s=7degrees of freedom (df)=n-1=28-1=27α=1-0.95=0.05α2=0.025t0.025(27)=2.052 (from…

Q: You are interested in constructing a 90% confidence interval for the proportion of all caterpillars…

A: (a) Obtain the 90% confidence interval for the proportion of all caterpillars that eventually…

Q: You have a sample of 9 men and a sample of 8 women. The degrees of freedom for the t value in your…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

Q: Find the 95% confidence interval for the proportion of customers planning to buy the shoes, and…

A: Provided data is, Mary was successful and collected 600 responses in time. 195 of the surveyed…

Q: Kim wants to determine a 80 % confidence interval for the true proportion ? of high school students…

Q: If n=22, ¯xx¯(x-bar)=39, and s=6, find the margin of error at a 98% confidence level Give your…

Q: find the margin of error at a 99% confidence level

A: The confidence level is 99%. The significance level is 0.01. The degrees of freedom is,…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

A: Given Information : A researcher is interested in constructing a 99% confidence interval for the…

Q: If n=27, (x-bar)=34, and s=3, find the margin of error at a 90% confidence leve Give your answer to…

Q: A study at Harvard found that 44% of their students binge drink. You are at Princeton doing a…

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: If n=29, ¯xx¯(x-bar)=34, and s=3, find the margin of error at a 95% confidence level Give your…

A: Given problem Given that n = 29 x-bar = 34 s = 3 The margin of error at a 95% confidence level…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A: sample size(n)=365 x=42 confidence level=95% sample proportion(p^)=42365≅0.1151

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: Givensample size(n)=1421Americans who smoke(x)=454confidence level=90%

Q: If n=24, ¯x(x-bar)=37, and s=6, find the margin of error at a 98% confidence level Give your answer…

A: Margin of error is the sampling error in the sample. It is also defined as the number of…

Q: If n=23, ¯x(x-bar)=34, and s=8, find the margin of error at a 99% confidence level Give your answer…

A: Solution: From the given information, n=23, x-bar=34 and s=8. The confidence level is 0.99.

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: According to the given information, we have Out of 100 adult residents sampled, 88 had kids. 99%…

Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given, Lower bound = 0.39 Upper bound = 0.78 Here, we use to determine the margin of error.

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Solution

Q: In a survey of 2319 adults, 704 say they believe in UFOs. Construct a 90% confidence interval for…

Q: If n=28, ¯xx¯(x-bar)=35, and s=8, find the margin of error at a 95% confidence level Give your…

A: Given values, s = 8 n = 28 Confidence level = 95% z score at 95% confidence level = 1.96

Q: Thelma and Louise each use their sample data to construct a confidence interval. Thelma’s interval…

A: It is given that Proportion p = 0.28 Thelma's interval = (0.242, 0.338) Louise's interval = (0.237,…

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

Q: Suppose a sample of 779 tenth graders is drawn. Of the students sampled, 202 read at or below the…

A: In question, Given that a sample of 779 tenth graders is drawn. Of the students sampled, 202 read at…

Q: Construct the 99.8% confidence interval for the difference P1 - P2 when x, = 23, n, = 53, x2 = 15,…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A: It is given that sample size (n) is 437 and x is 59.

Q: error at a 80% confidence level Give your answer to two decimal places.

A: Given If n=22, x¯(x-bar)=35, s=7, 80% confidence level

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

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

You are interested in constructing a 90% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 377 randomly selected caterpillars observed, 42 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 90% confidence the proportion of all caterpillars that lived to become a butterfly is between and b. If many groups of 377 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about percent will not contain the true population proportion.
Suppose we wish to construct a 95% confidence interval for the population proportion of fans in Notre Dame Stadium on a football Saturday who traveled in their own car. When we asked 200 randomly selected fans, 130 answered yes. Calculate the margin of error for this interval. Round your answer to 3 decimal places.
Find the margin of error at a 80% confidence level for estimating the population mean if n = 31, 2 = 36 and s=5. Round your answer to 2 decimal places.
If we find a 95% confidence interval using a sample, then we can say... 95% of individuals will fall on that interval there is a 5% chance the population proportion is NOT on the interval. 95% of our samples will fall on that interval. No answer text provided.
You are interested in constructing a 95% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 405 randomly selected caterpillars observed, 54 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 95% confidence the proportion of all caterpillars that lived to become a butterfly is between and . b. If many groups of 405 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about percent will not contain the true population proportion.
If n = 20, the sample mean = 250, SD = 15, SEM = 3.354, what is the confidence interval (using 95% confidence level). What percent confidence do you have that the population mean is between what two values
You are interested in constructing a 90% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 378 randomly selected caterpillars observed, 45 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 90% confidence the proportion of all caterpillars that lived to become a butterfly is between and . b. If many groups of 378 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about percent will not contain the true population proportion.
You are interested in constructing a 95% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 390 randomly selected caterpillars observed, 60 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 95% confidence the proportion of all caterpillars that lived to become a butterfly is between and . b. If many groups of 390 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about percent will not contain the true population proportion.
If you want to be confident in your estimation of a confidence interval, you should use….