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

Author Question: 100,000 randomly selected adults were asked whether they drink at least 48 oz of water each day and ... (Read 121 times)

james0929

  • Hero Member
  • *****
  • Posts: 586
on: Jul 25, 2018
100,000 randomly selected adults were asked whether they drink at least 48 oz of water each day and only 45 said yes. Identify the sample and population.
 
  A) Sample: the 45 of adults who drink at least 48 oz of water; population: all adults
  B) Sample: the 100,000 selected adults; population: the 45 of adults who drink at least 48 oz of water
  C) Sample: all adults ; population: the 100,000 selected adults
  D) Sample: the 100,000 selected adults; population: all adults

Question 2

Lengths of pregnancies are normally distributed with a mean of 268 days and a standard
  deviation of 15 days. (a) Find the probability of a pregnancy lasting more than 250 days.
  (b) Find the probability of a pregnancy lasting more than 280 days.
 
  Draw the diagram for
  each and discuss the part of the solution that would be different to finding the requested
  probabilities.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

braelync

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 25, 2018
Answer to Question 1

D

Answer to Question 2

Both (a) and (b) are solved by subtracting the area score from 1.


james0929

  • Hero Member
  • *****
  • Posts: 586
Reply #2 on: Jul 25, 2018
Thank you!


braelync

  • Sr. Member
  • ****
  • Posts: 350
Reply #3 on: Jul 25, 2018
Always glad to help...


« previous next »
 

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

A comparison of selected species of bacteria and archaea. A comparison of selected species of bacteria and archaea.
water molecules water molecules
Mixting Hot Cold water Mixting Hot Cold water
Wind and Water Erosion of Cropland Soils Wind and Water Erosion of Cropland Soils
Greenhouse gas (GHG) and Water vapor (H2O) Greenhouse gas (GHG) and Water vapor (H2O)
Productivity in Selected Industries in the Early 1990s Productivity in Selected Industries in the Early 1990s
Video: Neural regulation of blood pressure - baroreceptor and chemoreceptor reflexes

For a complete list of videos, visit our video library