Really need help on these questions 20. Given a data set of with a mean of...
Please help answer questions (a)-(c). Objective 4: Use the Empirical Rule to Describe Data That Are Bell-Shaped 3.2 Measures of Dispersion 3.2.29 0 of 1 Point Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 11. Use the empirical rule to determine thefollowing (a) What percentage of people has an IQ score between 67 and 133? (b) What percentage of people has an IQ score less than 67 or greater...
The mean IQ score of adults is 100 , with a standard deviation of 15 . Use the Empirical Rule to find the percentage of adults with scores between 85 and 115 . (Assume the data set has a bell-shaped distribution
For a symmectric bell shaped population with a mean of 20 and a standard deviation of 3 find the following. a) Use the empirical rule to find the interval that contain about 99.7% of all the values b) what is the z-score of an observation, 30 under this distribution c) is 30 an outlier in this data set d) give the evidence for your answer in part c
Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Using the empirical rule, what percentage of IQ scores are greater than 70? Please do not round your answer.
Need help with 19 and 20! Don’t understand Need it dumbed down d. About how many students scored below 547 .025 X 120-3T 5467 18. Lengths of fish caught by 1200 30 a commercial fishing boat have a bell-shaped distribution with mean 23 inches 11 st 0 a4 About how many students scored below 54?.025 and standard deviation 1.5 inches. tion of all fish caught are between 20 inches and 26 inches long? 15.4 ,7 a. About what proportion of...
please need help. I could not find number 21.. please write all of process I need. Thank you 21) Provide an appropriate response. 21) Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test). Find the probability that a randomly selected adult has an IQ between 90 and 120 (somewhere in the range of normal to bright normal) Maloo and 6=15 POV ,/20-100 1...
Suppose that IQ scores have a bell-shaped distribution with a mean of 105 and a standard deviation of 15. Using the empirical rule, what percentage of IQ scores are at least 120? Please do not round your answer.
3.2.29 13 Question Help Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 18. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 64 and 136? (b) What percentage of people has an IQ score less than 46 or greater than 154? (c) What percentage of people has an IQ score greater than 118? (a) % (Type an integer or a...
Suppose that IQ scores have a bell-shaped distribution with a mean of 101 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are no more than125?
Please Find the Intervals for the questions below: Pro golf scores are bell-shaped with a mean of 70 strokes and a standard deviation of 4 strokes. Using the empirical rule, in what interval about the mean would you expect to find 95% of the scores? Interval is - A child's piano practice times are normally distributed with of 19 minutes and a standard deviation of 5 minutes. Using the empirical rule, in what interval about the mean would you...