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

Author Question: Suppose that in a large population, the proportion that is left-handed is p = 0.10 . Suppose n = 20 ... (Read 177 times)

Diane

  • Hero Member
  • *****
  • Posts: 576
on: Jul 24, 2018
Suppose that in a large population, the proportion that is left-handed is p = 0.10 . Suppose n = 20 people will be randomly selected and X = number of people in the sample who are left-handed. What probability model should be used to find the probability that X = 3?
 a. Binomial
  b. Normal
  c. Uniform
  d. Chi-square

Question 2

A random sample of 40 men drank an average of 20 cups of coffee per week during finals, while a sample of 30 women drank an average of 15 cups of coffee per week. The sample standard deviations were 6 cups for the men and 3 cups for the women. The standard error for the difference between the two sample means is
 a. 1.095
  b. 1.200
  c. 1.549
  d. 2.400


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickybb89

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


Diane

  • Hero Member
  • *****
  • Posts: 576
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


vickybb89

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

The respiratory system. (a) Sagittal section of the head and neck, revealing the organs of the upper The respiratory system. (a) Sagittal section of the head and neck, revealing the organs of the upper
Risk of death from motorcycle accidents (dashed lines) and passenger accidents (solid lines) per 100 Risk of death from motorcycle accidents (dashed lines) and passenger accidents (solid lines) per 100
Cotton Production and Slave Population, 1800–1860 Cotton Production and Slave Population, 1800–1860
Calculation of body mass index. To determine your BMI, find the value for your height on the left ... Calculation of body mass index. To determine your BMI, find the value for your height on the left ...
Population and Settlement Population and Settlement
Typical leaf structure of eudicots (left) and monocots (right). Typical leaf structure of eudicots (left) and monocots (right).
Video: New DNA Strand Replication

For a complete list of videos, visit our video library