Sample mean probabilities

Related BrainMass Solutions

• Calculating Probabilities without Standard Deviation

  To calculate the probabilities in (1), (2) and (3), we need to know the mean of population. If not, then we can use the sample mean as an estimate for it. Now we assume that the population mean is known, say .

• Binomial probabilities and sample probabilities

  69176 Binomial probabilities and sample probabilities A normal population has a mean of 80.0 and a standard deviation of 14.0. Compute the probability of a value between 75.0 and 90.0. Compute the probability of a value 75.0 or less.

• Probabilities and Standard Normal Random Variable

  a) what is the probability that the sample mean for the 30 days will be between 300 and 330 movies? The sample mean Xbar will follow a normal distribution with mean 320, and standard deviation sigma=75/sqrt(30).

• Probabilities regarding the sample mean

  229996 Find probabilities regarding the sample mean when sampling from a normal probability distribution The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00.

• Mean, Median and Mode

  Then you have to add up all of those numbers (x1-mean)2 + (x2 - mean)2 +.......+ (xn-mean)2 / total number of cases good luck! The solution addresses implied population, sample, mean, median and mode.

• How do I identify standard error of the mean and determine probabilities of a sample mean?

  So, the probability that the sample mean would be between $41,000 and $43,000 is P(41000probabilities The standard errors of the mean and determine probabilities

• Sample mean probabilities with the central limit theorem

  This solution finds probabilities related to a sample mean by applying the central limit theorem.

• Calculating probabilities for normally distributed data

  is larger than 6.0 pounds. 3. between what two values symmetrically distributed around the mean will 95% of the sample mean of breaking strength fall?

• Statistics : Sampling Didtributions and Probabilities

  Show the sampling distribution of the mean amount of Medicare spending for a sample of fifty 2003 enrollees. b. Determine the probability the sample mean will be within ±$300 of the population mean. c.