![joannakawata6](/avatars/21779.jpg)
joannakawata6
19.03.2020 •
Mathematics
A survey was taken of children between the ages of 7 and 12. Let A be the event that the person rides the bus to school, and let B be the event that the person has 3 or more siblings.
A 6-column table has 5 rows. The first column has entries walks to school, bikes to school, rides bus to school, driven to school, total. The second column is labeled 0 siblings with entries 24, 8, 18, 32, 82. The third column is labeled 1 sibling with entries 37, 9, 36, 58, 140. The fourth column is labeled 2 siblings with entries 12, 8, 12, 22, 54. The fifth column is labeled 3 or more siblings with entries 3, 2, 9, 10, 24. The sixth column is labeled Total with entries 76, 27, 75, 122, 300.
Which statement is true about whether A and B are independent events?
A and B are independent events because P(A∣B) = P(A) = 0.12.
A and B are independent events because P(A∣B) = P(A) = 0.25.
A and B are not independent events because P(A∣B) = 0.12 and P(A) = 0.25.
A and B are not independent events because P(A∣B) = 0.375 and P(A) = 0.25.
Solved
Show answers
More tips
- H Health and Medicine AKDS Vaccination: Ensure Your Child s Safety...
- H Health and Medicine Naskol ko Opasen Ukus Kleshcha i Kak Ego Raspoznat...
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- D Dating, Love, Relationships How to Overcome Jealousy: Tips and Tricks...
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- C Computers and Internet How to Learn to Type Fast?...
- F Food and Cooking Delight for Gourmets: How to Prepare Liver Pate...
- S Style and Beauty How to braid friendship bracelets?...
- H Health and Medicine Mercury Thermometer Danger: What to do when a thermometer breaks?...
- F Food and Cooking Which Calamari Salad is the Most Delicious?...
Answers on questions: Mathematics
- M Mathematics Select the best description of exponential equation f ( x ) = 8 ( 0.44 )^x A) Decaying by 56% B) Decaying by 44% C) Growing by 44% D) Growing by 56%...
- M Mathematics What is 8.341 x 10 to the 5th power...
- P Physics As noted in the introduction, some scientists have proposed that dark matter does not really exist. according to this view, all matter is ordinary (baryonic), but at...
- C Chemistry Where would you look for igneous rocks? why?...
Ответ:
c:A and B are not independent events because P(A∣B) = 0.375 and P(A) = 0.25.
Step-by-step explanation:
Let A be the event that the person rides the bus to school, then:
P(A)=75/300
P(A)=0.25
Let B be the event that the person has 3 or more siblings, then:
P(B)=24/300
P(B)=0.25
P(A/B)=9/24
P(A/B)=0.375
Like P(A/B)=0.375 is different to P(A)=0.25 the events are not independent
Answer. Fourth option:
A and B are not independent events because P(A/B)=0.375 and P(A)=0.25
Ответ:
5x-2y=-33
First.) -5x+10x= 5x
Second.) -5y+3y= -2y
Third.) -30+-3= -33
:) Hope you enjoy this :)