Author Question: We determine the approximate width of the classes by subtracting the smallest observation from the ... (Read 54 times)

schs14

  • Hero Member
  • *****
  • Posts: 569
We determine the approximate width of the classes by subtracting the smallest observation from the largest and dividing the answer by the number of ___________________ _.
 Fill in the blank(s) with correct word

Question 2

Students in statistics classes were asked whether they preferred a 10-minute break or to get out of class 10 minutes early. In a random sample of 150 students, 40 preferred a 10-minute break, 80 preferred to get out 10 minutes early, and 30 had no preference. We want to determine if there is a difference in students' preferences. The hypothesis is to be tested at the 5 level of significance. The decision rule is not to reject the null hypothesis if _____.
 a. 1.96 < z < 1.96
  b. 1.645 < z < 1.645
  c. z > 1.96 or z < 1.96
  d. the number of + signs is greater than or equal to 20 and less than or equal to 130



AmberC1996

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

classes
intervals

Answer to Question 2

a



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

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.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

For a complete list of videos, visit our video library