If a sample data has the sample mean 3, sample SDV 2, what is the interval within two SDV of the mean? Show your reason or work.
If a sample data has the sample mean 3, sample SDV 2, what is the interval...
b) If the sample size is 150, by Chebyshev's rule, at least how many measurements are in the interval within two SDV of the mean? Show your reason or work. c) If the sample size is 150 and we assume the data set is mound shaped, by empirical rule, approximately how many measurements is beyond the interval two SDV of the mean? Show your reason or work. That means, they are either belowor above
Use the given degree of confidence and sample data to construct a confidence interval for the population mean µ. Assume that the population has a normal distribution. please show ur work, thanks Use the given degree of confidence and sample data to construct a confidence interval for the population mean . Assume that the population has a normal distribution. You need to show work. 5) 5) n = 12, x = 25.3, s = 4.5, 99 percent A) 21.28 <...
Estimate the mean (show your work) using the data below: interval freq 0-2 7 3-5 10 6-8 3 Show work
1. A C level confidence interval is described as what? (3 points) Oan interval computed from a data sample by a method that has the probability C of producing an interval containing the true value of the parameter any interval within the margin of error O an interval with a margin of error C that is also correct C% of the time Oany interval that follows the 68-95-99.7 rules Oan interval computed from a data sample that guarantees that the...
Given the confidence interval for a mean of (74.5738,77.4262), from a sample of size 34 with a population standard deviation of σ=3.6, find the following: Margin of Error(ME)= Standard Error(SE)= Zc= what was the confidence level for this confidence interval?= (Show your work please)
Assuming that the population is normally distributed, construct a 99% confidence interval for the population mean for each of the samples below. Explain why these two samples produce different confidence intervals even though they have the same mean and range. Sample A: 1 3 3 4 5 6 6 8 Sample B: 1 2 3 4 5 6 7 8 Full data set Construct a 99% confidence interval for the population mean for sample A (Type integers or decimals rounded...
Suppose a set of data has a sample mean of 106 and a sample standard deviation of 19.8. What is the Z-score for the value 122.0? Round the 2-score to two decimal places. Your Answer: Answer
Confidence interval for the population mean: Use of the t distribu... A researcher collected sample data for 10 women ages 18 to 24. The sample had a mean serum cholesterol level (measured in mg/100 mL) of 192.4, with a standard deviation of 5.2. Assuming that serum cholesterol levels for women ages 18 to 24 are normally distributed, find a 99% confidence interval for the mean serum cholesterol level of all women in this age group. Then complete the table below....
A random sample of 2597 adult Americans in November 2009 revealed a sample mean of $ 343.31 that was spent on Christmas shopping over the Thanksgiving weekend a. Is $ 343.31 a parameter or a statistic? What symbol is used for this? The value $ 343.31 is a The symbol used is b. Determine the value of for a 95% confidence interval for the population mean amount spent on Christmas shopping over that weekend. c. What further information about the...
Based on a sample of data, a researcher forms a confidence interval for the population mean mu that extends from 2.5 to 7.3 at the 95% confidence level. She then wishes to test Ho: mu = 3 against Ha: mu3 at the .05 level of significance. What can she conclude based on this confidence interval? confidence must be at the 90% level O retain Ho O the data must be false O reject Ho