Author Question: What is the probability of getting a sample mean between 500 and 520 if the population mean is 500 ... (Read 54 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
What is the probability of getting a sample mean between 500 and 520 if the population mean is 500 and the standard deviation of the sampling distribution (the standard error of the mean) is 20?
 
  a. 0.5000 c. 0.3413
  b. 0.4332 d. 0.1915

Question 2

A student wanted to know whether memory for items on a grocery list was better when a bizarre image was created for each item, compared with a strategy of simply trying to remember the items. The student had a randomly selected sample use bizarre imagery to remember a list of 15 items; the mean number of items remembered was 10 . The student compared this mean to a population mean of 7 and a standard error of 1.20 . What is the probability of obtaining a sample mean of 10 or higher?
 
  a. 0.0062 c. 0.4938
  b. 0.1151 d. 0.9938



Sweetkitty24130

  • Sr. Member
  • ****
  • Posts: 291
Answer to Question 1

C

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

For a complete list of videos, visit our video library