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

Author Question: Let X be a normally distributed random variable with a mean of 12 and a standard deviation of 1.5 . ... (Read 72 times)

melly21297

  • Hero Member
  • *****
  • Posts: 565
on: Jun 24, 2018
Let X be a normally distributed random variable with a mean of 12 and a standard deviation of 1.5 . What proportions of the values of X are:
 a. less than 14
  b. more than 8
  c. between 10 and 13

Question 2

Researchers studying the effects of a new diet found that the weight loss over a one-month period by those on the diet was normally distributed with a mean of 10 pounds and a standard deviation of 5 pounds. If a dieter is selected at random, what is the probability that the dieter lost more than 7.5 pounds?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

itsakadoozi

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 0.9082
b. 0.9962
c. 0.6568

Answer to Question 2

0.6915


melly21297

  • Member
  • Posts: 565
Reply 2 on: Jun 24, 2018
Gracias!

miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

The asymmetrical appearance of Mira, an oscillating variable star. The asymmetrical appearance of Mira, an oscillating variable star.
Random Random
Standard Medical Record and Types of Reports Found in Record Standard Medical Record and Types of Reports Found in Record
Variable Gases: Methane Variable Gases: Methane
a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments. a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments.
Standard Symbols Used in Pedigrees Standard Symbols Used in Pedigrees
Video: Nervous pathway to the Neuromuscular (NMJ)

For a complete list of videos, visit our video library