Homework Answers
Answer
Population mean GPA is equal to 2.95
Standard deviation of GPA is 0.20
we know that the standard deviation changes with the sample size, but the mean remains same for population as well as for sample mean.
So, for a sample size of 100
Mean GPA= 2.95
and standard deviation = 
So, correct answer for mean of sample means is 2.95
Option D is correct
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21. Consider a university with a population mean GPA of 2.95, a standard deviation of 2,...
please answer 22, thanks 21. Consider a university with a population mean GPA of 2.95, a...
please answer 22, thanks
21. Consider a university with a population mean GPA of 2.95, a standard deviation of .2, and a sampling distribution of all possible samples of size 100. The mean of the sample means is equal to: a) 245b) 2 .02 2.95 e) .025 Same as above, the standard deviation of the sample means is equal to: a)2.45 22. b) .2 d) 2.95 e) .025
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For the following situation, find the mean and standard deviation of the population. List all samples...
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Please ignore the circled choices. I am double checking my work. Find the area ynder the...
Please ignore the circled choices. I am double checking my
work.
Find the area ynder the normal curve to the right of 2-67 a) 7486 4214 813 1056 e) .7357 α) .7486 b) .2514 с).8413 0.1056 (9.7357 proportion of soores less than 18. Find the area under the noemal curve between -1.25 and-1. 19. Ir 10 scores are nomally distibuted with a mean o 20. Same as above except find the proportion of sooees greater 21. Consider a university with...
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please answer 22, thanks
21. Consider a university with a population mean GPA of 2.95, a standard deviation of .2, and a sampling distribution of all possible samples of size 100. The mean of the sample means is equal to: a) 245b) 2 .02 2.95 e) .025 Same as above, the standard deviation of the sample means is equal to: a)2.45 22. b) .2 d) 2.95 e) .025
18. Find the area under the normal curve between z--1.25 and z-1.0 a) .7486 19. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, find the proportion of scores less than 88 a) .3173 20. Same as above except find the proportion of scores greater than I standard deviation from the mean. a) .3173 21. Consider a university with a population mean GPA of 2.95, a standard deviation of.2, and a sampling...
A large population has a mean of 400, a standard deviation of 50, and is skewed right. For samples of size n=100 obtained from this population, the sampling distribution of the sample means has mean fe and standard deviation 0. Which of the following sets of graphs correctly display the population distribution and the sampling distribution of the sample means of size 100? Please note that the x-axis values differ within and across the options. A) Population Distribution Sampling Distribution...
For the following situation, find the mean and standard deviation of the population. List all samples (with replacement) of the given size from that population and find the mean of each. Find the mean and standard distribution and compare them with the mean and standard deviation of the population. The scores of three students in a study group on a test are 97, 94, 95. Use a sample size of 3. The mean of the population is Round to two...
use sample 1,2,2,5,5 rest stays the same
A population consists of 5 numbers: 1, 2, 2, 2, 3. Consider all possible samples of size two which can be drawn with replacement from this population. Find a) the mean of the population, b) the standard deviation of the population, e) the mean of the sampling distribution of means, d) the standard deviation of the sampling distribution of means. 6. Using the data of Problem 5, compute the mean of the sampling...
12. Using the letters in "BANANA", since there are 3 As, and 2 Ns, the number of different arrangements of the letters is: a) 30 c) 120 d)720 e) none of these 13. You decide to watch 4 shows. If there are 8 shows from which to choose, then in how you select the 4 shows you will watch? 70 c) 256 d) 1680 ) none of these c) 1.5 c) 1.5 14. Find the mean of a binomial distribution...
Please ignore the circled choices. I am double checking my
work.
Find the area ynder the normal curve to the right of 2-67 a) 7486 4214 813 1056 e) .7357 α) .7486 b) .2514 с).8413 0.1056 (9.7357 proportion of soores less than 18. Find the area under the noemal curve between -1.25 and-1. 19. Ir 10 scores are nomally distibuted with a mean o 20. Same as above except find the proportion of sooees greater 21. Consider a university with...
A population has a mean of 30 and a standard deviation of 9. If samples of size 36 are collected, find the mean and standard deviation of the sampling distribution. The mean of the sampling distribution is and the standard error is A population has a mean of 30 and a standard deviation of 9. If samples of size 36 are collected, find the mean and standard deviation of the sampling distribution. The mean of the sampling distribution is and...
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