The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 15. Given a class with 12 students, what is the probability that the class' average IQ score is less than 115?
In: Statistics and Probability
In a sample of 100 steel canisters, the mean wall thickness was 8.1 mm with a standard deviation of 0.5 mm.
Find a 95% lower confidence bound for the mean wall thickness. (Round the final answer to three decimal places.)
The 95% lower confidence bound is
In: Statistics and Probability
Consider an MPT that is backed by 100 mortgages with average balance of $350,000 and monthly payment. The MPT has a WAC = 5% and WAM = 60 months. There is no servicing fee on this security. Assuming the prepayment model of CPR=5% and market rate is 3%, how much should this security sell for?
In: Finance
| IQs are known to be normally distributed with mean 100 and standard deviation 15. In a random sample of 33 people, find the probability that the average IQ is between 96 and 104. |
In: Statistics and Probability
Given that a potential of 0.25 mV is applied to an aluminum conductor that is 100?m long and has a square cross–sectional area with width 1?m, answer the following questions. The resistivity of aluminum is 25 nW×m.
(a)Calculate the electric field.
(b)Calculate the magnitude of the current flowing in the conductor.
(c)Calculate the resistance of the conductor.
We are learning about the properties of materials right now. Thanks in advance.
In: Mechanical Engineering
In: Statistics and Probability
Disease A is autosomal dominant. A total of 4% of the study population of 100 people are affected. How many carriers are in the study population?
Disease A is autosomal recessive. A total of 16% of the study population of 100 people are affected. How many carriers are in the study population?
TIA!
In: Biology
Calculate V and Z for methyl chloride at 100 ° C and 55bar for the ideal gas equation, by the equation of virial. Data: R = 83.14 cm 3 bar/molK; viral coefficient B equals -242.5 cm3/mol.
In: Mechanical Engineering
The mass of 100 g hangs in a spring with the spring constants 40 N / m. The pulp is swung by the spring being stretched 14 mm. Neglect all energy losses.
a) Use MatLab and draw a chart showing the distance from equilibrium mode as a function of time with the initial conditions x (0) = 14 mm and v (0) = 0 mm / s
b) Determine speed as a function of time.
In: Physics
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. 105.4 E. 108.5
In: Statistics and Probability