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Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1)
asked by LADO on November 26, 2014 
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Let x represent the number which shows up when a balanced die is rolled. Then x is a random variable with a uniform distribution. Let xbar denote the mean of the numbers obtained when the die is rolled 32 times. For samples of
asked by J on April 22, 2007 
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The t distribution should be used when ___. the sampling population is not normal the sampling population is unimodal The sampling distribution is normal and the population standard deviation is unknown the population standard
asked by John on June 22, 2010 
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Which of the following statements is true about the tdistribution with k degrees of freedom? i. the tdistribution is symmetric ii. the tdistribution with k degrees of freedom has a smaller variance than the tdistribution with
asked by Anonymous on May 2, 2007

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450 people are randomly selected at grocery stores across the state and surveyed on the amount of money they are spending at the store that day. How does finding the sample variance compare to investigating the sampling
asked by maczindahouse on February 20, 2019 
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Bookstore has a website for which 90 percent of their book sales are to out of state customers and not subject to the collection of sales tax . The sample proportion of all sales to out of state customers from samples of size 100
asked by Teresa on April 3, 2016 
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Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bellshaped. c. If a population has normal ditribution, the mean and the
asked by Michelle on May 8, 2010 
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CAN SOMEONE HELP ME WITH THIS? A recent study found that, of the 1771 participants aged 12 to 19 in the National Health and Nutrition Examination Survey, 19.5% had some hearing loss (defined as a loss of 15 decibels in at least
asked by Kate on February 14, 2017

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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.
asked by What? on October 26, 2012 
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How do frequency tables, relative frequencies, and histograms showing relative frequencies help us understand sampling distributions? A. They help us to measure or estimate of the likelihood of a certain statistic falling within
asked by Randy on September 26, 2010 
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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 of
asked by Tammy on February 8, 2011 
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The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the
asked by Jim on February 18, 2016
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