11 a) True or False: The t distribution has a greater standard deviation than the standard normal...
11 a) True or False: The t distribution has a greater standard deviation than the standard normal z distribution.
Can you explain or prove why this is True?
I have a hunch it has something to do with the sample sizes vs the population but I'm really not sure & I really like to be able to explain why things are true or false for questions like this.
Thanks!
Homework Answers
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11 a) True or False: The t
distribution has a greater standard deviation than the standard
normal...
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A normal distribution is approximated as a Student t distribution when the population standard deviation is...
A normal distribution is approximated as a Student t distribution when the population standard deviation is unknown. Select one: True on O False
= X- 4) A normal distribution has mean u = 65 and a population standard deviation...
= X- 4) A normal distribution has mean u = 65 and a population standard deviation o= 20. Find and interpret the z - Score for x = 64. u a) The z - score for x = 64 is 64-65 b) Interpret these results. (Explain): 5) A sample size 28 will be drawn from a population with mean 120 and standard deviation 21. a) Is it appropriate to use the normal distribution to find probabilities for x? yes or...
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3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the...
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1. True or False: (1pt each) (T) (F) If a distribution is normal, then it is...
1. True or False: (1pt each) (T) (F) If a distribution is normal, then it is not possible to randomly select a value that is more than 4 standard deviations from the mean. (T) (F) Normal distribution is a discreet probability distribution for a random variable. (T) (F) If the variable follows a binomial distribution, then about 68 % of the variables are within 1 SD of the mean, about 95% of the variables are within +2 SD of the...
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If the sample size is greater than one, the standard deviation of the sample mean (i.e.,...
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The difference between the T distribution and the standard normal (z) distribution decreases as the degrees...
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If I has a normal distribution, then 7 always has a normal distribution. True False Under what condition does the sample mean ī not have a normal distribution? Population is not normal but the sample size n > 30. Population is not normal and sample size n <30. Population is normal. The Central Limit Theorem for a sample mean (@) is very important in Statistics because it states that for large sample sizes, the population distribution is approximately normal. for...
A normal distribution is approximated as a Student t distribution when the population standard deviation is unknown. Select one: True on O False
= X- 4) A normal distribution has mean u = 65 and a population standard deviation o= 20. Find and interpret the z - Score for x = 64. u a) The z - score for x = 64 is 64-65 b) Interpret these results. (Explain): 5) A sample size 28 will be drawn from a population with mean 120 and standard deviation 21. a) Is it appropriate to use the normal distribution to find probabilities for x? yes or...
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