« previous next »

Author Question: As the sample size increases, the variability among the sample means _____. a. increases b. ... (Read 185 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?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Metabolic rates of animals that differ in size. Metabolic rates of animals that differ in size.
Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to
Sample communication analysis Sample communication analysis
Analogies for estimating portion size Analogies for estimating portion size
Sample Inclusion for Various s Sample Inclusion for Various s
Distribution Patterns and Population Size Estimates (Bio 30) Distribution Patterns and Population Size Estimates (Bio 30)
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library