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

Author Question: In the construction of confidence intervals, if all other quantities are unchanged, an increase in ... (Read 48 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
on: Jun 24, 2018
In the construction of confidence intervals, if all other quantities are unchanged, an increase in the sample size will lead to a ________ interval.
 
  A) less significant B) wider C) narrower D) biased

Question 2

You were told that the mean score on a statistics exam is 75 with the scores normally distributed. In addition, you know the probability of a score between 55 and 60 is 4.41 and that the probability of a score greater than 90 is 6.68. What is the probability of a score lower than 55?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

karlss

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

2.27 or 0.0227


Arii_bell

  • Member
  • Posts: 596
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

carojassy25

  • Member
  • Posts: 299
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

The Head Start program was designed to increase the school readiness of low-income children. The Head Start program was designed to increase the school readiness of low-income children.
A high-performance aftermarket air filter often can increase airflow into the engine for more ... A high-performance aftermarket air filter often can increase airflow into the engine for more ...
Factors for Tolerance Intervals Factors for Tolerance Intervals
How to find the intervals where a function is satisfied using inequalities How to find the intervals where a function is satisfied using inequalities
How an Increase in Income Inequality Affects the Desired Tax Rate How an Increase in Income Inequality Affects the Desired Tax Rate
Construction of genomic libraries Construction of genomic libraries
Video: Structure of a Ribosome

For a complete list of videos, visit our video library