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

Author Question: A continuous random variable x is normally distributed with a mean of 250 and a standard deviation ... (Read 87 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
on: Jun 24, 2018
A continuous random variable x is normally distributed with a mean of 250 and a standard deviation of 50 . Find the z-score for x = 285.

Question 2

Suppose it is known that 60 of students at a particular college are smokers. A sample of 500 students from the college is selected at random. Approximate the probability that at least 280 of these students are smokers.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

amy.lauersdorf90

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jun 24, 2018
Answer to Question 1

0.7

Answer to Question 2

0.9664


nramada

  • Member
  • Posts: 580
Reply 2 on: Jun 24, 2018
Wow, this really help

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

The standard protocol of a metagenomics experiment. The standard protocol of a metagenomics experiment.
Elementary particles included in the Standard Model Elementary particles included in the Standard Model
Absorption & Stripping Design Random packing materials Absorption & Stripping Design Random packing materials
Many Native Americans have maintained continuous identity with their tribal roots. You can see the ... Many Native Americans have maintained continuous identity with their tribal roots. You can see the ...
What Is a Standard Drink? What Is a Standard Drink?
Determine if each function is continuous, If the function is not continuous, find the x-axis Determine if each function is continuous, If the function is not continuous, find the x-axis
Video: Neuron structure and function - sensory neurons, association neurons & motor neurons

For a complete list of videos, visit our video library