![tessthetoast](/avatars/32690.jpg)
tessthetoast
24.11.2019 •
Mathematics
In a group of ten students, eight own an android smartphone. if you select two students from this group at random without replacement, what is the probability, rounded to 3 decimal places, that both own an android?
Solved
Show answers
More tips
- F Food and Cooking How to properly cook shrimp: tips from professionals...
- C Computers and Internet How to Choose a Laptop: Expert Guide and Tips...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
Answers on questions: Mathematics
- M Mathematics Who trying to facetime and plz dont report me...
- C Chemistry Calculate the osmolarity of a 1.20% (m/v) Mg(NO3)2 solution....
- M Mathematics List the arcs whose measures add to the equivalent of major arc AD....
- M Mathematics What is the length of each leg in the right angle triangle shown...
- M Mathematics If m= 4 and n=7, what is the value of m - n? ...
- H History He had become the most famous athlete in the world after the 1990 World Cup. A. Romario B. Norman Whiteside C. Ferenc Puskas D. Diego Maradona...
Ответ:
P = 0.622
Step-by-step explanation:
Since 8/10 own an Android, the probability on the first selection is 8/10.
Since the second selection is done without replacement (meaning the first selection is removed from the available choices) the probability of getting a student who owns an Android is 7/9 (we lose one possible Andriod, and one total person from the selection pool).
To solve this we multiply the probabilities together..
(8/10)(7/9) = 56/90 which equals 0.622222 as a decimal, but the question wants it rounded to 3 decimals, so the final answer is 0.622
Ответ: