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statistics
1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. (True/False) b. The graph of a normal distribution is bellshaped. (True/False) c. If a population has a normal
asked by ann on August 20, 2011 
Statistics
For a normal distribution with a mean of m = 80 and a standard deviation of s = 20, find the proportion of the population corresponding to each of the following scores. a. Scores greater than 85 b. Scores less than 100 c. Scores
asked by Lyndon on July 26, 2010 
statistics
The distribution of scores on the SAT is approx. normal with mu= 500 and std dev=100. a)what proportion of the population have SAT scores above 650? b)what proportion of of the population have SAT scores below 540? c)what is the
asked by Tommy on February 7, 2008 
Statistics
True or False For any normal distribution, the proportion in the tail beyond z = 2.00 is p = 0.0228.
asked by Lyndyc on December 5, 2013 
Statistics
Is there a rule to figure out if this is a true or false statement? A sample size of 900 is not large enough to conclude that the sampling distribution of p is a normal distribution, when the estimate of the population proportion
asked by none on October 24, 2010 
StatsBOB PURSLEY Help, do you know this?
Is there a rule to figure out if this is a true or false statement? A sample size of 900 is not large enough to conclude that the sampling distribution of p is a normal distribution, when the estimate of the population proportion
asked by help on October 24, 2010 
Statistics
True or False In order for the distribution of sample means to be normal, it must be based on samples of at least n = 30 scores.
asked by Lyndyc on December 11, 2013 
Statistics
If the population is normally distribution then the sample must be normally distributed even for small sample size? True or False. The variance of the standard normal distribution is always equal to 1.? True or False. A continuous
asked by Jamie on February 7, 2014 
statistics
The distribution of scores is normal with a ì = 100 and ó =15. What proportion of the population have scores A) Above 130? B) Below 90? C) Above 110?
asked by chante on March 20, 2012 
Statistics
True or False? As the degrees of freedom increase, the Student's t distribution becomes more like the standard normal distribution. Answer True False
asked by Desperate on July 7, 2012