Normal Distribution, Sampling, Confidence interval

Related BrainMass Solutions

• Sampling distribution of the sample mean is approx normal

  36442 Problems on sampling, hypothesis testing and confidence interval 1.Which of the following statements about the sampling distribution of the sample mean is incorrect? a.

• Difference between confidence interval and significance level

  Step 3: From the tables of the sampling distribution find two points c1 and c2 such that Note: If the sampling distribution is symmetric about origin (such as standard normal or students't) then we need to find only a value c.

• Another Confidence Interval Proof

  66891 Another Confidence Interval Proof (See attached file for full problem description) --- For large sample sizes, n, the sampling distribution of the sample standard deviation S is sometimes approximated with a Normal distribution having mean

• Find confidence interval using standard normal distribution

  So n=984 The solution gives detailed steps on solving four questions: finding confidence interval using standard normal distribution.

• Quantative Research Methods: Sample Size, Confidence Interval

  200190 Quantative Research Methods: Sample Size, Confidence Interval Question 1: As a sample size approaches infinity, how does the student's t distribution compare to the normal z distribution?

• Standard deviation, and Hypothesis Testing Multiple Choice

  The shape of the sampling distribution is always approximately normal. d.)

• Springdale Shopping Survey

  normal distribution for 95% confidence, z will be +- 1.96 So the 95% confidence interval for u is mean - 1.96(0.776/sqrt(150) 4.086 - 1.96(0.776/12.24) 4.083 - 1.96 (0.06) 4.083 - 0.117= 3.966 OR 4.083 + 0.117 = 4.2 So the 95% confidence interval

• Determining the Shape of the Sampling Distribution

  The shape will also be normal. The 95% confidence interval is calculated in the attached file. This solution provides calculations for determining the shape of the sampling distribution.

• Normal Distribution, Sampling distribution

  180500 11 Multiple choice questions on Normal Distribution, t distribution, confidence interval, sampling distribution of the mean, standard error of the mean. 1) If you were constructing a 99% confidence interval of the population mean based on a sample

• Sampling distribution, Normal Distribution, t-distribution

  questions on Sampling distribution, Normal Distribution, t-distribution, confidence interval estimate, standard error of the mean, finite population correction factor, sample size, degrees of freedom, one-sided confidence interval estimate