How do I find the lower limit of a confidence interval using a z-table. Having trouble...

How do I find the lower limit of a confidence interval using a z-table. Having trouble understanding where the 1.645 number came from in this solution

Sample proportion {p} = 367 / 561 = 0.654 Lower limit for 95% confidence interval is {p} - Z\alpha * sqrt( {p} ( 1 - {p} ) / n) = 0.654 - 1.645 * sqrt( 0.654 * 0.346 / 561) = 0.617

Expert Solution

orchestra answered 2 years ago

how do I find the confidence interval for the median of a population?

How do I find the margin of error with a 98% confidence interval estimate of the...

How do I find the margin of error with a 98% confidence interval estimate of the population mean sales price and population mean number of days to sell for Domestic cars? For Domestic Cars Statistics List Price Sale Price Days to Sell N Valid 200 200 200 Missing 0 0 0 Mean 32.1615 29.7430 32.9050 Median 29.5500 27.5500 31.0000 Std. Deviation 18.31094 18.25088 17.86735 Range 75.00 74.60 69.00

11. The lower limit of a 95% confidence interval for the population proportion P given a...

11. The lower limit of a 95% confidence interval for the population proportion P given a sample size n = 100 and sample proportion P̂ = 0.62 is equal to: Show your calculations. Show your calculations. A. 0.699 B. 0.525 C. 0.440 D. 0.715 12. The 95% confidence interval for the population proportion P, given a sample size n = 2200 and sample proportion P̂ = 0.214 is computed as: Show your calculations. Show your calculations. A. 0.214 ± 0.017...

How do you construct a confidence interval for a t test and a z test?

Describe the steps involved in using the z-interval procedure to obtain a confidence interval for the...

Describe the steps involved in using the z-interval procedure to obtain a confidence interval for the population mean when standard deviation is known. Include a description of the preliminary data analysis. Why is preliminary data analysis needed?

2.A college wants to know the lower limit of a two-sided 80% confidence interval for SAT...

2.A college wants to know the lower limit of a two-sided 80% confidence interval for SAT scores on the Math section (range equals 200 to 800). They sampled 1000 students and found that the sample mean was 580 and the sample standard deviation was 40. 3.A Rollercoaster's auditors estimate that the average daily loss from those illegally riding without tickets is at least (greater or equal) $250, but wants to determine the accuracy of this statistic. The company researcher takes...

I'm having trouble with my ZeroDenominatorException. How do I implement it to where if the denominator...

I'm having trouble with my ZeroDenominatorException. How do I implement it to where if the denominator is 0 it throws the ZeroDenominatorException and the catch catches to guarantee that the denominator is never 0. /** * The main class is the driver for my Rational project. */ public class Main { /** * Main method is the entry point to my code. * @param args The command line arguments. */ public static void main(String[] args) { int numerator, denominator =...

What is the benefit of using a confidence interval? What exactly does a confidence interval do...

What is the benefit of using a confidence interval? What exactly does a confidence interval do that a P value does not? I need this to be clear because I am so confused.

While using crunchit/ excel/ software of your choose how do you find a confidence interval when...

While using crunchit/ excel/ software of your choose how do you find a confidence interval when your variables are in words? i have a list of over 300 patients who are positive or negative for influenza and I'm not sure how to solve!

TCP client and server using C programming I am having trouble on how to read in...

TCP client and server using C programming I am having trouble on how to read in the IP adress and port number from the terminal Example: Enter IP address: 127.0.0.1 Enter Port Number: 8000 in both client and server code. How do can I make I can assign the Ip address and port number using the example above. the error I get is that the client couldn't connect with the server whenever i get the port number from the user...

Question