1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brrunno [24]
3 years ago
10

The average score of this quiz is 24 points with a standard deviation of 1.5 points. What is the probability that someone scored

21.9 or less
Mathematics
1 answer:
navik [9.2K]3 years ago
7 0

Answer:

8.08 %

Step-by-step explanation:

Let us denote : X= score X follows a normal distribution with mean =24 and standard deviation =1.5

Step 2

The probability that someone scored 21.9 or less is :

\mathrm{P}(\mathrm{X} \leq 21.9)

=\mathrm{P}\left(\mathrm{Z} \leq \frac{21.9-24}{1.5}\right)

=\mathrm{P}(\mathrm{Z} \leq-1.4)

=0.0808

=8.08%

Answer : 8.08 %

You might be interested in
If b = 3, then b ^-2 is equivalent to<br> 9<br> 09<br> -6<br> 01
Anni [7]

Answer:

1/9 = 0.11111111 ( infinite )

Step-by-step explanation:

4 0
2 years ago
The dance committee hired a DJ for the fall dance. The DJ charges $125 per hour plus $55 for an assistant. The committee wants t
lorasvet [3.4K]
He can play for 4 hours
3 0
3 years ago
Read 2 more answers
They're just hired a new employee to work in your bike shop in one hour the employee burns 55 chocolate chip cookies if this rep
KATRIN_1 [288]

Answer:

250 cookies

Step-by-step explanation:

The employee burns 55 chocolate chip cookies

if this represented 22% of the days production

Let x = the total production of cookies for the day

how many cookies did you plan on producing that day?

22% of x = 55

22 / 100 * x = 55

0.22x = 55

Divide both sides by 0.22

x = 55 / 0.22

= 250

x = 250 cookies

Therefore, the total production of cookies for the day is 250

6 0
2 years ago
The soccer team at your school wants to spray paint a design on the middle of the
balandron [24]
Gdassduhhrjjdhdudjdhhdjdjdjsj I’m bout a dead man just got hit by the fire pit I’m bout a man I’m going to get
6 0
1 year ago
There is a 0.9986 probability that a randomly selected 33​-year-old male lives through the year. A life insurance company charge
Helen [10]

Answer:

Expected Value = -$42 (loss of 42 dollars)

Step-by-step explanation:

Complete Question Below:

<em>"There is a 0.9986 probability that a randomly selected 33​-year-old male lives through the year. A life insurance company charges ​$182 for insuring that the male will live through the year. If the male does not survive the​ year, the policy pays out ​$110 comma 000 as a death benefit. If a 33-year-old male purchases the policy, what is his expected value?"</em>

<em />

We can say P(survival) = 0.9986 and thus P(not survival) = 1 - P(survival) = 1-0.9986 = 0.0014

Also,

In case 33 year old doesn't live, the payment would be 100,000 - 182 = $99,818

And

In case 33 year old lives, the payment is

-$182

We know, the <em>expected value is the sum of the product of each possibility with its probability.</em>

ExpectedValue=\Sigma x*p(x)=(99818)(0.0014)+(-182)(0.9986)=-42

This means a loss of $42 (or -$42)

4 0
2 years ago
Other questions:
  • Help with 33 and 34 please!!!
    8·2 answers
  • Least to greatest 3.06, 3.8, 3 1/6, 3 3/4
    10·1 answer
  • Circle K has a diameter of 24 inches. Find the exact length of semicircle HJI. In your final answer, include all of your calcula
    13·2 answers
  • What is the value of x?
    10·2 answers
  • What does exceed mean in math
    7·1 answer
  • ANSWER QUICKLY !! How many terms are in “y^2 + 4y - 15” ???<br><br> a) two terms<br> b) 3 terms
    11·2 answers
  • What is the midpoint of a line segment with endpoints at (3,-1) and (8, -4)?
    7·2 answers
  • 5a + 18 &lt; −27 pre algibra
    12·2 answers
  • What is the answer to 4x + 27
    11·1 answer
  • Simplify -24/(-3)X(-4)​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!