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

Author Question: A recent survey found that 74 of all adults over 50 own cell phones. You randomly select 41 adults ... (Read 81 times)

Chloeellawright

  • Hero Member
  • *****
  • Posts: 588
on: Jul 25, 2018
A recent survey found that 74 of all adults over 50 own cell phones. You randomly select 41 adults over 50, and ask if he or she owns a cell phone. Decide whether you can use the normal distribution to approximate the binomial distribution.
 
  If so, find the mean and standard deviation, If not, explain why. Round to the nearest hundredth when necessary.

Question 2

In the hypothesis tests for large and small sample means and differences between means, the left hand term in
  the numerator is always a population value.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fromAlphatoOmega22

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 25, 2018
Answer to Question 1

use normal distribution,  = 30.34 and  = 2.81.

Answer to Question 2

FALSE


Chloeellawright

  • Member
  • Posts: 588
Reply 2 on: Jul 25, 2018
Great answer, keep it coming :)

amandalm

  • Member
  • Posts: 306
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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.

A comparison between chromosomes found in a normal human cell and a cancer cell from the same person A comparison between chromosomes found in a normal human cell and a cancer cell from the same person
Plant Cell Key Plant Cell Key
Viruses must infect a host cell to grow and reproduce Viruses must infect a host cell to grow and reproduce
Aggregated red-cell clusters have a streamlined shape, leading to further viscos Aggregated red-cell clusters have a streamlined shape, leading to further viscos
The anatomical distortion of the structure of RBCs in sickle cell anemia affects its normal function ... The anatomical distortion of the structure of RBCs in sickle cell anemia affects its normal function ...
cell 2 cell 2
Video: Heart Chambers

For a complete list of videos, visit our video library