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 77 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?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Large Wolf Spider with young in Michigan Large Wolf Spider with young in Michigan
Predators and Population Cycles Predators and Population Cycles
Two-handed kneading on the upper leg. Apply kneading to medial, posterior, and lateral muscles of ... Two-handed kneading on the upper leg. Apply kneading to medial, posterior, and lateral muscles of ...
Policies on fertility and population growth Policies on fertility and population growth
Changes in the Age Structure of the Population, 1950–2050 Changes in the Age Structure of the Population, 1950–2050
Video: Lipid catabolism - lipolysis and beta oxidation and oxidation of fatty acids

For a complete list of videos, visit our video library