This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: If only the upper 30 of a normally distributed class passed a quiz for which the mean was 70 and the ... (Read 15 times)

TVarnum

  • Hero Member
  • *****
  • Posts: 548
on: Jun 20, 2018
If only the upper 30 of a normally distributed class passed a quiz for which the mean was 70 and the standard deviation was 10, what was the lowest score a student could have received and still have passed?
 
  a. 80.0 c. 70.0
  b. 64.8 d. 75.2

Question 2

On a recent paper, Maria's score, transformed to a zscore, was +1 . If the cutoff mark is the upper 10 of the class for As, the upper 10 to 20 for Bs, the upper 20 to 30 for Cs, and the upper 30 to 40 for Ds (below 60 being a failure), what grade did Maria receive on the quiz?
 
  a. A c. C
  b. B d. F


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

maya.nigrin17@yahoo.com

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

B


TVarnum

  • Member
  • Posts: 548
Reply 2 on: Jun 20, 2018
Excellent

sarah_brady415

  • Member
  • Posts: 328
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Upper Airflow and Weather Forecasting Upper Airflow and Weather Forecasting
Upper Airflow and Weather Forecasting Upper Airflow and Weather Forecasting
Differences in the antigen-processing pathways between MHC molecules class I and class II. Differences in the antigen-processing pathways between MHC molecules class I and class II.
Apply direct thumb pressure into points along the upper trapezius from base of neck to shoulder. ... Apply direct thumb pressure into points along the upper trapezius from base of neck to shoulder. ...
Apply L stroke on both sides of the neck, from below the ear to just above the upper trapezius with ... Apply L stroke on both sides of the neck, from below the ear to just above the upper trapezius with ...
Growing snails in class room sk Growing snails in class room sk
Video: Homologous chromosomes during prophase I - Animation

For a complete list of videos, visit our video library