Determining the probability and percentile

Reference no: EM1311728

Q1) Many natural phenomena which humans observe are about generally distributed. Based on observations, it can be supposed that human intelligence is approximately distributed. Graph below shows comparisons of standard normal scores (z-scores) and IQ scores.

Need help with these

a) If person is selected at random and tested, determine the probability of that person having an IQ score between 85 and 115. Make use of EXCEL to help determine the probability.

P(85 < X < 115): (where X is the IQ score).

b) What IQ score will correspond to 50^th percentile. Make use of EXCEL to help determine the percentile. 50^th Percentile IQ score: (where X is the IQ score).

c) Use What IQ score will correspond to 85^th percentile. Make use of EXCEL to help determine the percentile. 85^th Percentile IQ score: (where X is the IQ score).

Reference no: EM1311728

Questions Cloud

Accounting entries from the given information : Accounting entries from the given information - COLO COMPANY Sales Journal

Advantages of activity-based costing : What are three advantages of activity-based costing over traditional volume-based allocation methods and which of the following manufacturing costs are assigned to products

Economic advantage over those in the us : Opponents of NAFTA point out that pollution is largely a free good in Mexico also that being free to pollute gives industries in Mexico an economic advantage over those in the U.S. also Canada.

What is the distance of the dinosaur : The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice will be formed from 0°C water.

Determining the probability and percentile : If person is selected at random and tested, determine the probability of that person having an IQ score between 85 and 115. Make use of EXCEL to help determine the probability.

What is goal for a business and write a well-organized essay : Determination of goal for a business and write a well-organized essay identifying the main premise of the book

The tangential speeds at the rims compare : A luge and its rider, with a total mass of 83kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 44m/s. Assume that they stop with the constant deceleration of 2.9 m/s2.

Computation of cost of goods sold using the provided data : Computation of cost of goods sold using the given data - Using the following data, compute cost of goods sold

Probability and normal distribution : If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?

User Account

All Pages