How large a sample is needed for a correlation of r = 0.550 to be significant using a two-tailed ...

Author Question: How large a sample is needed for a correlation of r = 0.550 to be significant using a two-tailed ... (Read 87 times)

sdfghj

Hero Member
Posts: 552

on: Jun 20, 2018

How large a sample is needed for a correlation of r = 0.550 to be significant using a two-tailed test with = .05?

A) n = 14
B) n = 13
C) n = 12
D) n = 11

Question 2

A sample obtained from a population with = 12 has a standard error of 2 points. How many scores are in the sample?

A) n = 36
B) n = 24
C) n = 6
D) n = 3

samiel-sayed

Sr. Member
Posts: 337

Reply #1 on: Jun 20, 2018

Answer to Question 1

A

Answer to Question 2

A

Need homework help now?

Ask unlimited questions for free

Ask a Question

sdfghj

Hero Member
Posts: 552

Reply #2 on: Jun 20, 2018

Thank you!

samiel-sayed

Sr. Member
Posts: 337

Reply #3 on: Jun 20, 2018

Happy to help

« previous next »

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

The rotifer, Brachionus calyciflorus, is a large predator that consumes the smaller algae, Chlorella

Large Tortoiseshell

Anatomy of the large intestine

Oil Refineries Are Large and Complex Facilities

Products like Beano contain enzymes that help reduce the production of gas in the large intestine

Anatomy of the Large Intestine (colon)

Author Question: How large a sample is needed for a correlation of r = 0.550 to be significant using a two-tailed ... (Read 87 times)

Related Topics

Need homework help now?