« previous next »

Author Question: As the sample size increases, the variability among the sample means _____. a. increases b. ... (Read 160 times)

ericka1

  • Hero Member
  • *****
  • Posts: 544
on: Jun 24, 2018
As the sample size increases, the variability among the sample means _____.
 a. increases
  b. decreases
  c. remains the same
  d. depends upon the specific population being sampled

Question 2

A salesperson contacts 8 potential customers per day. From past experience, we know that the probability of a potential customer making a purchase is .10.
 a. Define the random variable in words for this experiment.
  b. What is the probability the salesperson will make exactly 2 sales in a day?
  c. What is the probability the salesperson will make at least 2 sales in a day?
  d. What percentage of days will the salesperson not make a sale?
  e. What is the expected number of sales per day?


lgoldst9

  • Sr. Member
  • ****
  • Posts: 372
Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

a. x = the number of sales made out of 8 contacts
b. .1488
c. .1869
d. 43.05
e. .8


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Size varies greatly among horse breeds, as with this full-sized horse and a miniature horse. Size varies greatly among horse breeds, as with this full-sized horse and a miniature horse.
From left to right: Size development, biometrical changes in the cranium, reduction of toes ... From left to right: Size development, biometrical changes in the cranium, reduction of toes ...
Nurse examining and measuring hematuria sample from client with a UTI Nurse examining and measuring hematuria sample from client with a UTI
Analogy for Cepheid Variability Analogy for Cepheid Variability
Beak size and Drought Beak size and Drought
Sample Workout in the Target Heart Rate Range Sample Workout in the Target Heart Rate Range
Video: New DNA Strand Replication

For a complete list of videos, visit our video library