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
KatRina [158]
3 years ago
9

ACT mathematics score for a particular year are normally distributed with a mean of 28 and a standard deviation of 2.4 points

Mathematics
1 answer:
kompoz [17]3 years ago
3 0

Answer:

a.   0.1587

b.  0.8849

c.  0.1814

Step-by-step explanation:

a. Given that \mu=28, \ \ \sigma=2.4

-The probability a randomly selected score is greater than 30.4 is calculated as:

P(X>30.4)=1-P(X30.4)=1-P(z

Hence, the probability of a score greater than 30.4 is 0.1587

b. Given that \mu=28, \ \ \ \sigma=2.4

The probability a randomly selected score is less than 32.8 is calculated as:

P(X

Hence, the probability that a randomly selected score is less than 32.8 is 0.8849

c. The probability that a score is between 25.6 and 32.8 is calculated as follows:

P(25.6

Hence, the probability is 0.1814

You might be interested in
Which expressions are equivalent to 7^8 x 7? Select all that apply.
nlexa [21]

Answer:

Step-by-step explanation:

7^8*7=

5764801 * 7= 40353607

A. 7^3*7^3= 343*343= 117649 <--- not the answer

B. 7^18/7^9= 40353607 <---- right answer

C. (7^3)^3= 343^3= 40353607  <------ right answer

D. 7^5+7^4= 16807+2401= 19208 <---- not the answer

E. 7^5*7^4= 16807*2401= 40353607 <---- right answer

7 0
2 years ago
Please help me please
SVETLANKA909090 [29]

Answer: x is 125

Step-by-step explanation: Angles P and S are also consecutive angles, adding up to 180 degrees. 180-55 = 125, so adding the two angles together is 180 degrees. Thus, x is 125.

5 0
2 years ago
Bill estimates that 20 people will attend the seminar if it does not rain and 12 people will attend if it rains. The weather for
Rama09 [41]
15 people would show up
6 0
3 years ago
Circle O is shown. Line segments B O and O C are radii. Point A is on the circle and is not within angle B O C.
Paha777 [63]

The ratio of major to minor arc = 2 : 1

What is a Circle?

A circle is the locus of a point such that its distance from a fixed point (center) is always constant.

Calculation

The length of an arc (L) with center angle θ is given by:

                                          L = (θ/360) * 2πr

where r is the radius.

Putting the values in the above formula.

For the major arc:

L = (240/360) * 2πr

For the major arc:

l = ((360-240)/360) * 2πr

l = (120/360) * 2πr

The ratio of major to minor arc = [(240/360) * 2πr] / [(120/360) *2πr] = 2 : 1

The ratio of major to minor arc = 2 : 1.

Learn more about the circle here:

brainly.com/question/15125799

#SPJ1

5 0
2 years ago
P pennies added to 22 pennies
taurus [48]
23 Pennie’s is the answer I believe
7 0
2 years ago
Other questions:
  • 15 more than 3 times a number is at most 7
    7·1 answer
  • The temperature in degrees Celsius can be expressed by the function c(f)=5/9(f-32) where f is the temperature in degrees farenhe
    7·2 answers
  • What does z equal in 4z+5=-3z-8
    5·1 answer
  • Can someone please answer Day 20???
    8·1 answer
  • HELPPPPPPP what's the answer and plz explain
    14·1 answer
  • Find the next three terms of the sequence: 33, 25, 18, 12, …….
    6·1 answer
  • Solve the inequality. Draw a number line representing the solution.<br> 2x – 3 &lt; 9
    15·2 answers
  • Which of the following is the solution to the inequality?
    10·1 answer
  • Find the slopes of the following lines<br><br>​
    7·1 answer
  • PLEASE HEPP IM STUCK
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!