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

Author Question: When calculating a confidence interval, the reason for using the t-distribution rather than the ... (Read 25 times)

cartlidgeashley

  • Hero Member
  • *****
  • Posts: 572
on: Jun 24, 2018
When calculating a confidence interval, the reason for using the t-distribution rather than the normal distribution for the critical value is that the population standard deviation is unknown.
 
  Indicate whether the statement is true or false

Question 2

Assuming that the change in daily closing prices for stocks on the New York Stock Exchange is a random variable that is normally distributed with a mean of .35 and a standard deviation of .33.
 
  Based on this information, what is the probability that a randomly selected stock will close up .75 or more?A) 0.3869
  B) 0.1131
  C) 0.7100
  D) 0.8869


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jesse.fleming

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jun 24, 2018
Answer to Question 1

TRUE

Answer to Question 2

B


cartlidgeashley

  • Member
  • Posts: 572
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Distribution of the gibbons. Distribution of the gibbons.
Part A - Calculating the expected number of each phenotype Part A - Calculating the expected number of each phenotype
The four processes of pharmacokinetics: absorption, distribution, metabolism, and excretion. The four processes of pharmacokinetics: absorption, distribution, metabolism, and excretion.
Cumulative Standard Normal Distribution Cumulative Standard Normal Distribution
Distribution Patterns and Population Size Estimates (Bio 30) Distribution Patterns and Population Size Estimates (Bio 30)
Reason why its incrorect Reason why its incrorect
Video: Cognitive development by Piaget (Preoperational stage or intelligence)

For a complete list of videos, visit our video library