QUESTION 2 An 1Q test has a mean of 100 and a standard deviation of 15....
1. The typical IQ test is designed with a mean of 100 and standard deviation of 15. Find Z score corresponding to IQ score of 128 (4 points) Z=
1. The typical IQ test is designed with a mean of 100 and standard deviation of 15. Find Z score corresponding to IQ score of 128 (4 points) Z=
An IQ test has a mean of 100 and a standard deviation of 15? Jadon has an IQ of 100. What percentage of the population is smarter than him?
A and B questions
An 1Q test is designed so that the mean is 100 and the standard deviation is 22 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 90% confidence that the sample mean is within 6 IQ points of the true mean. Assume that σ = 22 and determine the required sample size using technology. Then determine if this...
A 100-item test has a mean of 75 and standard deviation of 10. Assuming the scores are normally distributed determine the raw score (rounded to the nearest integer) corresponding to the 25th percentile. (Fill in the corresponding blanks)
Consider a distribution with a mean of 15 and a standard
deviation of 3.
If an observation from the distribution has a z-score of -2,
what is the value?
Consider a distribution with a mean of 15 and a standard deviation of 3. If an observation from the distribution has a z-score of -2, what is the value?
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Mensa is an international society that has one - and only one - qualification for membership: a score in the top 2% of the population on an IQ test. (a) What IQ score should one have in order to be eligible for Mensa? (b) In a typical region of 145,000 people, how many are eligible for Mensa?
5. A history test has a mean of 100 and a standard deviation of 10. Find the z-score for the test score 130. (5 points) Gientb, ind the allovings (5 points each) 18 27 21 42 38 25 30 35 17 40 28 20 a. The percentile rank of 28. b. The score that corresponds 80* percentile. 7. (10 points each) a. Given the data below , Use the b. Construct the box plot of the data outliner procedure to...
QUESTION 6 The mean IQ score of all adults is 100, with a standard deviation of 15. Find the percentage of adults with scores between 70 and 130. Assume the data has a bell-shaped distribution. State the answer only and no additional work. Do not state the percent sign and state as a whole number. (Example: do not state 13% or 0.13. Instead state the answer as 13) QUESTION 4 2 po Many firms use on-the-job training to teach their...
Students taking a standardized IQ test had a mean score of 100 with a standard deviation of 15. What is the lowest score that would still place a student in the top 15%?
. In a distribution with a mean of 100 and a standard deviation
of 15, what is the probability that a score will be 115 or higher?
Show all the steps of the calculation in Excel.
a. 16%
b. 34%
c. 50%
d. 84%
I know the answer is A., I know the porb of >1 is 1.5866, but
I dont know how to show this in excell, and im not really sure what
im doing with that extra yellow...