blurredvision8 blurredvision8

23-05-2018
Mathematics

contestada

Scores on a standardized military exam are normally distributed with a mean of 57 and a standard deviation of 9. Consider a group of 4000 military students. Approximately how many students will score less than 66 on the test?

Respuesta :

koolguy12 koolguy12

23-05-2018

Use the formula:

66-57=9    (66 minus the mean of 57)

9/9 = 1    (standard deviation divided by 9)

Find 1 on a Z-Score table. This equals .8413

.8413(4000) = 3,365.2    (Z-Score multiplied by the number of total students)

Can also be 3,366 ;)

Answer Link

Otras preguntas

A hocky puck of mass 0.100 kg moves along the horizontally and to the right at a speed of 5.00m/s. The puck collides (with a glancing blow) with a stationary pu

Suppose the price of a good increases from $21 to $24, and the quantity supplied increases from 240 goods to 300 goods. Using the midpoint method, what is the t

Answer these 2 questions with the help of the picture what did you do in the simulation to cool down when It was hot. What did you do in the simulation to cool

Define Sole Proprietorship:

Correcta escritura de la palabra: ajonjolí ¿Se escribe con tilde? Si Regla de acentuación aplicada: ajónjoll ajonjoll No

Total blood volume (in ml) per body weight (in kg) is Important in medical research. For healthy adults, the red blood cell volume mean is about fe = 28 ml/kg.+

What does it mean when a futures contract quote shows open interest at 100?

Outdoor Luggage, Inc, makes high-end hard-sided luggage for sports equipment. Data concerning three of the company's most popular models appear below. What are

If q(r)= 3r 1 and p(z) = z-1/3, what is (q•p)(x)?

A cylinder-shaped water cup has a diameter of 16 cm and an altitude of 10 cm. What is the volume of water that will fill the cup to HALF of its capacity?