![connermichaela](/avatars/17891.jpg)
connermichaela
18.01.2020 •
Mathematics
The question is: the iqs of 9 randomly selected people are recorded. let y(bar) denote their average.
assuming the distribution from which the yi's were drawn is normal with a mean of 100 and a standard deviation of 16, what is the probability that y(bar) will exceed 103?
what is the probability that any arbitrary yi will exceed 103?
what is the probability that exactly 3 of the yi's will exceed 103?
Solved
Show answers
More tips
- G Goods and services What Are the Most Popular Services?...
- P Philosophy How did the concept of module arise in computer science?...
- D Dating, Love, Relationships Why Should the Man be Active and the Woman Passive during Foreplay?...
- S Society and Politics Выборы: Смысл, Значение и Отражение...
- B Business and Finance How to Get Your Money Back When Lending? Top 7 Ways...
- F Family and Home Do Lullabies Help Babies Sleep or Is it Just a Myth?...
- F Family and Home Why Does God Punish Us Constantly and How Can We Fix It?...
- D Dating, Love, Relationships Why do we feel shame?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
Answers on questions: Mathematics
- M Mathematics - Which of the following graphs represents the linear equation y = -X? A B C. D...
- M Mathematics GIVING BRAINLIST pls do not just guess 1) Identify the relationship between corresponding terms of two patterns starting at zero. The first pattern follows the rule...
- M Mathematics Why does nobody answer my questions b.ru.h :(...
- M Mathematics Frazier is walking in the seating area of the gym12 up, where he sees Mr. Emonds and Mr. Leedy down on the floor talking. He wants to know if they are standing 6 feet...
- M Mathematics DUE TOMORROW- 15 POINTS 1) Which expression can be used to find the price of a $400 telescope after a 32% markup? Select all that apply. o A. 400 ∙ 0.32 o B. 400 ∙ 3.2...
- M Mathematics CAN ANYONE Answer THIS? Elsa s store purchased a sofa at a wholesale price of $350, and sold it for $630. What is the percent of markup?...
- M Mathematics I need help with this. It is a true or false question...
- M Mathematics Please help me on this...
- M Mathematics Please help The price of a pair of shoes increases from $65 to $69. What is the percent increase to the nearest percent?...
- M Mathematics The All-American Aircraft Corporation manufactures two models of planes, both a light and a heavy bomber. All-American Aircraft makes a profit of $300 per light bomber...
Ответ:
a.![0.42465\approx 42.5\%](/tpl/images/0460/4573/4f008.png)
b. 0.23
Step-by-step explanation:
We have been given that the the distribution from which the Yi's were drawn is normal with a mean of 100 and a standard deviation of 16.
(a) We are asked to find the probability that any arbitrary Yi will exceed 103.
Let us calculate z-score corresponding to 103 using z-score formula.
Now, we need to find
.
Using normal distribution table, we will get:
Therefore, the probability, that any arbitrary Yi will exceed 103, is 0.42465 or 42.5%.
(b) To find the probability that exactly 3 of the Yi's will exceed 103, we will use binomial probability formula.
For the given scenario
,
and
.
Therefore, the probability, that exactly 3 of the Yi's will exceed 103, is approximately 0.23 or 23%.
Ответ:
there is no attachment