Question

In: Math

Question 4 Use your TI83 (or Excel): A normally distributed population of IQ scores has a...

Question 4 Use your TI83 (or Excel): A normally distributed population of IQ scores has a mean of 99 and a standard deviation of 17. Determine the IQ at the 2nd percentile. Round to the nearest whole number

QUESTION 5 Use your TI83 (or Excel): A normally distributed population has a mean of 271 and a standard deviation of 28. Determine the value of the 90th percentile. Round to the nearest whole number

QUESTION 6 Use your TI83 (or Excel): A normally distributed population has a mean of 98.11 and a standard deviation of 0.22. Determine the value of the third quartile. Round to the nearest hundredth

QUESTION 7 Use your TI83 (or Excel): A normally distributed population has a mean of 98.37 and a standard deviation of 0.39. Determine the value of the first quartile. Round to the nearest hundredth

QUESTION 8 Use your TI83 (or Excel): A normally distributed population has a mean of 110 and a standard deviation of 19. Determine the value of the third quartile. Round to the nearest tenth

Solutions

Expert Solution

Solution:

Question 4 Use your TI83 (or Excel): A normally distributed population of IQ scores has a mean of 99 and a standard deviation of 17. Determine the IQ at the 2nd percentile.

Answer: The excel function is:

QUESTION 5 Use your TI83 (or Excel): A normally distributed population has a mean of 271 and a standard deviation of 28. Determine the value of the 90th percentile.

Answer: The excel function is:

QUESTION 6 Use your TI83 (or Excel): A normally distributed population has a mean of 98.11 and a standard deviation of 0.22. Determine the value of the third quartile.

Answer: The excel function is:

QUESTION 7 Use your TI83 (or Excel): A normally distributed population has a mean of 98.37 and a standard deviation of 0.39. Determine the value of the first quartile.

Answer: The excel function is:

QUESTION 8 Use your TI83 (or Excel): A normally distributed population has a mean of 110 and a standard deviation of 19. Determine the value of the third quartile

Answer: The excel function is:

milcah answered 1 year ago
Next > < Previous

Related Solutions

QUESTION 5 Use your TI83 (or Excel): A normally distributed population has a mean of 72...
QUESTION 5 Use your TI83 (or Excel): A normally distributed population has a mean of 72 and a standard deviation of 14. Determine the probability that a random sample of size 35 has an average of less than 73. Round to four decimal places. QUESTION 6 A normally distributed population has a mean of 71 and a standard deviation of 15. Determine the probability that a random sample of size 26 has an average greater than 74. Round to four...
QUESTION 3 Use your TI83 (or Excel): A normally distributed population has a mean of 233...
QUESTION 3 Use your TI83 (or Excel): A normally distributed population has a mean of 233 and a standard deviation of 16. Determine the value of the 90th percentile. Round to the nearest whole number Question 4 Use your TI83 (or Excel): A normally distributed population of adult American men heights has a mean of 58.5 inches and a standard deviation of 4.35 inches. Determine the height at the 1st percentile. QUESTION 5 Use your TI83 (or Excel): A normally...
QUESTION 11 Use your TI83 (or Excel): A normally distributed population has a mean of 77...
QUESTION 11 Use your TI83 (or Excel): A normally distributed population has a mean of 77 and a standard deviation of 15. Determine the probability that a random data has a value of less than 74. Round to four decimal places. QUESTION 12 Use your TI83 (or Excel): A normally distributed population has a mean of 77 and a standard deviation of 12. Determine the probability that a random data has a value between 72 and 80. Round to four...
IQ scores in a certain population are normally distributed with a mean of 97 and a...
IQ scores in a certain population are normally distributed with a mean of 97 and a standard deviation of 12. (Give your answers correct to four decimal places.) (a) Find the probability that a randomly selected person will have an IQ score between 92 and 98. (b) Find the probability that a randomly selected person will have an IQ score above 90 .
Assuming IQ scores are normally distributed in the population with a mean of 100 and a...
Assuming IQ scores are normally distributed in the population with a mean of 100 and a standard deviation of 16, what percentages of IQ scores are less than 120, between 110 and 130, and what IQ will place you in the top 8% of the population?
) Scores on an IQ test are normally distributed. A sample of 20 IQ scores had...
) Scores on an IQ test are normally distributed. A sample of 20 IQ scores had standard deviation s = 8. The developer of the test claims that the population standard deviation is ı = 12. Do these data provide sufficient evidence to contradict this claim? Use the Į = 0.05 level of significance. 3) A) Reject H0. The population standard deviation appears to differ from 12. B) Do not reject H0. There is insufficient evidence to conclude that the...
The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population mean of...
The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population mean of 100 and a population standard deviation of 25. What is the probability we could select a sample of 25 adults and find the mean of the sample is more than 110?
Scores on an IQ test are normally distributed. A sample of 10 IQ scores had standard...
Scores on an IQ test are normally distributed. A sample of 10 IQ scores had standard deviation s=7. (a) Construct a 98% confidence interval for the population standard deviation . Round the answers to at least two decimal places. (b) The developer of the test claims that the population standard deviation is 9. Does this confidence interval contradict this claim? Explain  
IQ scores are known to be normally distributed. The mean IQ score is 100 and the...
IQ scores are known to be normally distributed. The mean IQ score is 100 and the standard deviation is 15. What percent of the population has an IQ between 85 and 105. Need to solve it through Excel
The claim is that the IQ scores of statistics professors are normally​ distributed, with a mean...
The claim is that the IQ scores of statistics professors are normally​ distributed, with a mean less than 133. A sample of 11 professors had a mean IQ score of 130 with a standard deviation of 8. Find the value of the test statistic.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT