maths
posted by harish .
x ~ N(400,64)
1) Find the limits within which the central 95% of the distribution lies.
2) find the interquartile range of the distribution.

387<x<407.8
Respond to this Question
Similar Questions

Precalculus
Find the interquartile range and the semiinterquartile range of the following data: 42 51 53 53 59 61 75 100 mean=61.75=62 median=56 mode=53 interquartile range=87.552=35.5? 
Statistics
A mathematically defined curve that is the comparison distribution used in ANOVA is called the:  Normal distribution  Chi Square distribution  F distribution  T distribution 
math300
Run the simulation using n = 30 and N = 10 for a uniform, a bellshaped, and a skewed distribution. Identify the mean of the sampling distribution of sample means for each distribution. Evaluate if the results are what you expected … 
Math Statistics
A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape … 
Statistics
As the degrees of freedom for the tdistribution increase, the distribution approaches the value of zero for the mean. the tdistribution. the normal distribution. the F distribution. 
AP Statistics
As the degrees of freedom for the tdistribution increase, the distribution approaches the value of zero for the mean. the tdistribution. the normal distribution. the F distribution. I'm thinking C... 
statstics
A distribution of weights is symmetric about its median. The lower quartile of the weights is 90 pounds and the median is 120 pounds. Find the interquartile range of the distribution. 
Statistics
Weights of male mountain lions follow the normal distribution with a median of 150 lb and an interquartile range of 8.2 lb. Find the 75th percentile of the weights. Find the 95th percentile of the weights. 
math
Find and Interpret the median and the interquartile range for each distribution. The median: 31. Here's the set of numbers: 10, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 23, 24, 25, 27, 31, 34, 34, 35, 35, 36, 37, 38, 39, 39, 41, 43, … 
SS
Which division within Bolivia depends most directly on geography?