Normally distributed population

Reference no: EM1311357

Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15. What percentage of persons earned scores?

1. below 100?

2. above 115?

3. below 70?

4. above 130?

5. between 85 and 115?

Reference no: EM1311357

Questions Cloud

Frequency polygon concept : A frequency polygon: does not depend on one variable. True-False

Compute grocery stores weekly demand forecast : Develop an exponential smoothing forecast with smoothing constants α =0.1 and 0.3. What would be the forecast for week 11?

Evaluate the unit contribution margin : Evaluate the unit contribution margin and the contribution margin ratio - Armstrong Helmet Company manufactures a unique model of bicycle helmet.

Compute the unit variable cost for a helmet : Compute the unit variable cost for a helmet - evaluatethe unit variable cost with the given data.

Normally distributed population : Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.

Ad and as model : Describe how a change in investment can have big impact on GDP causing a nationwide slump. Recall that investment is "small" relative to the entire economy.

Use a different cost accounting system : Under what circumstances might Armstrong use a different cost accounting system - Finding the circumstance might Armstrong use a different cost accounting system.

Find the gravitational force exerted by shuttle on the earth : When the space shuttle (mass of the shuttle=2*10^6kg) was at the outer limit of Earth's atmosphere (distance= 350km above Earth's surface), astronauts measured the gravitational force from Earth to be equal to 1.7*10^7 newtons. Find the gravitatio..

Essay on freedom enjoyed by women in saudi arabia : Freedom enjoyed by women in Saudi Arabia. What do people usually ask about when they talk about women in Saudi Arabia?

User Account

All Pages