Use the one-proportion plus-four z-interval procedure to find the required confidence interval. Interpret your results. Offshore Drilling. In the February 2013 article “Offshore Drilling Support High as Deepwater Horizon Oil Spill Trial Opens,” E. Swanson reported on a HuffPost and YouGov poll that asked Americans what they think about increased offshore drilling for oil and natural gas. Of the 1000 U.S. adults surveyed, 280 said that they were opposed. Find a 99% confidence interval for the proportion of all U.S. adults who, at the time, opposed increased offshore drilling for oil and natural gas.

Question

Use the one-proportion plus-four z-interval procedure to find the required confidence interval. Interpret your results.

Offshore Drilling. In the February 2013 article “Offshore Drilling Support High as Deepwater Horizon Oil Spill Trial Opens,” E. Swanson reported on a HuffPost and YouGov poll that asked Americans what they think about increased offshore drilling for oil and natural gas. Of the 1000 U.S. adults surveyed, 280 said that they were opposed. Find a 99% confidence interval for the proportion of all U.S. adults who, at the time, opposed increased offshore drilling for oil and natural gas.

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: The London Schoolof Economics and the Harvard BusinessSchool conducted astudy of how Chief Executive...

A: Note: Hey there! Thank you for the question. The appears as a continuous string with no gap between ...

Q: Exercises pertain to critical values for a Wilcoxon signed-rank test. Use Table V in Appendix A to d...

A: Click to see the answer

Q: We would like to estimate a relationship between the weight of a car (weight) and the miles-per-gall...

A: From the provided information, The coefficients of log-log model are -1.335148 and 13.69696. The log...

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the ind...

A: Obtain the standard z-score for the random variable X equals 30. The standard z-score for the random...

Q: Grab Bags A convenience ștore has made up 20 grab bag gifts and is offering them for $2.00 a bag. Te...

A: Given information- Total no. of bags = 20 Cost of 1 bag = $2.00 We have given that- 10 bags contain ...

Q: Mendelian Genetics When Mendel conducted his famous genetics experiments with peas, one sample of of...

A: Click to see the answer

Q: In simple random sampling, all samples of a given size are equally likely. Is that true in systemati...

A: Click to see the answer

Q: Assume that you want to test the claim that the paired sample data come from a population for which ...

A: We have given paired sampled data, calculation for sample mean and standard deviation is show below....

Q: Psychologists who develop new tests and questionnaires to be used in research and diagnosis must ins...

A: Given that,  

Q: Graphical Analysis In Exercise 14, use the box-and-whisker plot to identify the five-number summary....

A: The given box plot is:

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software f...

A: Click to see the answer

Q: If the Mean of a data set is 700 and the Variance is 49; Calculate the intervals used for the Empiri...

A: Given information, Mean of a data set = 700 Variance = 49 We have to calculate intervals using empir...

Q: I understand part A and B, but cannot determine C.

A: Click to see the answer

Q: First, the researcher categorised the data into six location groups and six occupation groups, and c...

A: a) The following procedure is used to construct a chart used to comparing the number of individuals ...

Q: Define uniform probability distribution

A: Uniform distributions are distributions of probabilities with outcomes equally likely. There are two...

Q: Given that SSxx=213, SSyy=176, and SSxy=180, What is the value of the correlation coefficient? (Roun...

A:  

Q: Too much cholesterol in the blood increases the risk of heart disease. The cholesterol levels of you...

A: From the provided information, Mean (µ) = 185 milligrams per decilitre Standard deviation (σ) = 39 m...

Q: Critical Values. In Exercises 41–44, find the indicated critical value. Round results to two decimal...

A: Click to see the answer

Q: A line can combine unites of inputs Cx) to produce processing units of output cy such trat there is ...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: Working with Large Data SetsIn Exercises, use the technology of your choice to do the following task...

A: Click to see the answer

Q: What is the range of the numbers -3,2,-5,3,11?

A: Click to see the answer

Q: Fill in the blanks. Based on the least-squares criterion, the line that best fits a set of data poin...

A: The given statement is “Based on the least-square criterion, the line that best fits a set of data p...

Q: For which of the following sets of data points can you reasonably determine a regression line? Expla...

A: Scatterplot: A scatterplot is a graph of data for two quantitative variables of population. Each plo...

Q: Suppose the Mean and Standard Deviation of a data set are 48 and 4 respectively. What is the Z value...

A: Click to see the answer

Q: How do you interpret the estimated value of β 2 in the following model?   1. the mean value of ln(y...

A: The provided regression equation is:

Q: Starting Salaries. The National Association of Colleges and Employers (NACE) conducts surveys of sal...

A: The data represents the boxplot for the stating annual salaries in thousands of dollars for a random...

Q: First, the researcher categorised the data into six location groups and six occupation groups, and c...

A: Bar chart: Bar chart is the graphical way of representing the data values using bars (rectangles), ...

Q: A survey found that 21% of americans watch fireworks on television on July 4. Find the mean, varianc...

A: Given information- Given problem is of binomial distribution. We have given that 21% of Americans wa...

Q: In baseball, two statistics, the ERA (Earned Run Average) and the WHIP (Walks and Hits per Inning Pi...

A: Interpret the slope. The correct option is identified below:   From the information given that   The...

Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within ...

A: Click to see the answer

Q: A marketing consultant created a linear regression model to predict the number of units sold by a cl...

A: Given that, A marketing consultant created a linear regression model to predict the number of units ...

Q: We have provided simple data sets for you to practice the basics of finding a a. population mean. b....

A: Click to see the answer

Q: Could you please tell me how to complete this using a ti-84

A: a. The hypotheses are; This is a lower-tailed test. Here, difference, d = Actress – Actor

Q: Annual Incomes Annual incomes are known to have a distribution that is skewed to the right instead o...

A: The annual incomes distributed skewed to the right and the large random sample collected from the an...

Q: Convert 500 slug/in. to kg/m.

A: One slug per inch is equal to 574.563 kilogram per meter.

Q: Suppose that 8 % of all bicycle racers use steroids, that a bicyclist who uses steroids tests positi...

A: Click to see the answer

Q: Given the estimated least square regression line y=2.48+1.63x, and the coefficient of determination ...

A: Click to see the answer

Q: Compute C5,2. (Enter an exact number.)

A: Obtain the value of C5,2. The value of C5,2 is obtained below:   Combination: A combination is a se...

Q: Early-Onset Dementia. Dementia is the loss of the intellectual and social abilities severe enough to...

A: Click to see the answer

Q: In Exercises, we repeat data from exercises in Section 14.2. For each exercise, determine the linear...

A: Click to see the answer

Q: Explain how the variance inflation factor (VIF) affects the estimated standard deviation of a regres...

A: Variance inflation factor: Variance inflation factor of a variable is the ratio of the variance of a...

Q: Identify each quantity as a parameter or a statistic. a. μ b. s c. x d. σ

A: Click to see the answer

Q: Best-Selling Albums. The Recording Industry Association of America provides data on the best-selling...

A: Click to see the answer

Q: When testing for current in a cable with six color-coded wires, the author used a meter to test four...

A: Using the combination formula the required number of tests can be obtained as:

Q: Explain role of the instrument relevance condition in IV regression?

A: An instrumental variable (sometimes referred to as a "instrument" variable) is a third variable whic...

Q: The researcher considers using regression analysis to establish a linear relationship between the tw...

A: a) The dependent variable is the yearly income (y) as it is depending on the independent variable, t...

Q: The number of orders that come into a mail-order sales office each month is normally distributed wit...

A: Obtain the standard z-score for the random variable equals 310 orders. The standard z-score for the ...

Q: The mean is µ = 15.2 and the standard deviation is o = 0.9. Find the probability that X is greater t...

A: Click to see the answer

Q: Determine the following for a q-curve with parameters κ = 6 and ν = 13. a. The q-value having area 0...

A: Introduction: The studentized range distribution, the curve of which is called the q-curve, is the p...

Q: Players A, B and C toss a fair coin in order.  The first to throw a head wins.  What are their respe...

A: Obtain the probability of winning for the player A: It is given that, the players A, B and C toss a ...