Author Question: We determine the approximate width of the classes by subtracting the smallest observation from the ... (Read 24 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?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

For a complete list of videos, visit our video library