IQ is normally distributed with a mean of 100 and a standard deviation of 15. a)...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. a) Suppose one individual is randomly chosen. Find the probability that this person has an IQ greater than 95. Write your answer in percent form. Round to the nearest tenth of a percent. P (IQ greater than 95) = % b) Suppose one individual is randomly chosen. Find the probability that this person has an IQ less than 125. Write your answer in percent form. Round to the nearest tenth of a percent. P (IQ less than 125) = % c) In a sample of 700 people, how many people would have an IQ less than 110? people d) In a sample of 700 people, how many people would have an IQ greater than 140? people

Expert Solution

Thank you.

orchestra answered 2 years ago

IQ is normally distributed with a mean of 100 and a standard deviation of 15. a)...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. a) Suppose one individual is randomly chosen. Find the probability that this person has an IQ greater than 95. Write your answer in percent form. Round to the nearest tenth of a percent. P P (IQ greater than 95) = % b) Suppose one individual is randomly chosen. Find the probability that this person has an IQ less than 125. Write your answer in percent...

. IQ is normally distributed with a mean of 100 and a standard deviation of 15....

. IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose an individual is randomly chosen. a) (3pt) Find the probability that the person has an IQ greater than 125. b) (4pt) Find the probability that the person has an IQ score between 105 and 118. c) (4pt) What is the IQ score of a person whose percentile rank is at the 75th percentile, ?75? d) (3pt) Use the information from part (c) to...

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. A) If one person are randomly selected, find the probability the IQ score is greater than 112. B)If one person are randomly selected, find the probability the IQ score is less than 95. C)If one person are randomly selected, find the probability the IQ score is between 97 and 110. D) If 16 people are randomly selected, find the probability the IQ score will...

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a) Find the proportion of the population that has an IQ higher than 94 b) Find the proportion of the population that has an IQ between 82 and 88 c) Find the IQ score that seperates the highest scoring 67% from the rest of the population Critical Values Z0.05= 1.645 Z0.025=1.96 Z0.01=2.325 Z0.005=2.575

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Find the probability that the person has an IQ less than 110. Include a sketch of the graph and shade the area to be determined.

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. a. X ~ _____(_____,_____) b. Find the probability that the person has an IQ greater than 120. A. 0.05 B. 0.08 C. 0.09 D. 0.06 E. 0.07 c. Find the probability that the person has an IQ between 90 and 115. A. 0.589 B. 0.664 C. 0.732 D. 0.531 E. 0.469 d. Find the 60th percentile A. 98.6 B. 100.0 C. 103.8 D....

74. IQ is normally distributed with a mean of 100 and a standard deviation of 15....

74. IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. X ~ _____(_____,_____) Find the probability that the person has an IQ greater than 120. Include a sketch of the graph, and write a probability statement. MENSA is an organization whose members have the top 2% of all IQs. Find the minimum IQ needed to qualify for the MENSA organization. Sketch...

IQ Scores are normally distributed with a mean of 100 and a standard deviation of 15....

IQ Scores are normally distributed with a mean of 100 and a standard deviation of 15. Use this information and a Z-table (or calculator or Excel) to solve the following problems. A. Ryan has an IQ score of 118. Calculate the z-score for Ryan's IQ. B. Interpret the z-score you obtained in the previous problem. C. Suppose an individual is selected at random. What is the probability that their IQ score is less than 111? Round your answer to four...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. Part B Find the probability that the person has an IQ greater than 110. What is the probability? (Round your answer to four decimal places.) Part C The middle 60% of IQs fall between what two values? State the two values. (Round your answers to the nearest whole number.) What is the...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose an individual is randomly chosen. a) Find the probability that the person has an IQ greater than 125. b) Find the probability that the person has an IQ score between 105 and 118. c) What is the IQ score of a person whose percentile rank is at the 75th percentile, ?75? d) Use the information from part (c) to fill in the blanks and...

Question

IQ is normally distributed with a mean of 100 and a standard deviation of 15. a)...

Solutions

Expert Solution

Related Solutions

IQ is normally distributed with a mean of 100 and a standard deviation of 15. a)...

. IQ is normally distributed with a mean of 100 and a standard deviation of 15....

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

74. IQ is normally distributed with a mean of 100 and a standard deviation of 15....

IQ Scores are normally distributed with a mean of 100 and a standard deviation of 15....

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...

IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose...