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
egoroff_w [7]
3 years ago
11

During her lunch hour, Shawna asked 40 students how many after-school clubs they joined. The list below shows the number of club

s that the students joined.
2, 2, 3, 0, 3, 2, 4, 2, 1, 4, 3, 2, 4, 1, 0, 2, 1, 3, 2, 0,
1, 1, 2, 1, 0, 3, 0, 1, 4, 1, 1, 0, 2, 3, 2, 0, 3, 2, 0, 1

If this sample is representative of the student population of 360 students, about how many students in the school joined three clubs?
A. 15 students
B. 63 students
C. 109 students
D. 189 students
Mathematics
2 answers:
bulgar [2K]3 years ago
5 0

Answer:

63 not 36 lol the answers B

Step-by-step explanation:


Fudgin [204]3 years ago
4 0

Answer:

B. 63 students

Step-by-step explanation:

Total number of students=360

number of students Shawna asked=40

which is equal to 1/9 of the total population.

The number of clubs that the students joined are:

2, 2, 3, 0, 3, 2, 4, 2, 1, 4, 3, 2, 4, 1, 0, 2, 1, 3, 2, 0,  1, 1, 2, 1, 0, 3, 0, 1, 4, 1, 1, 0, 2, 3, 2, 0, 3, 2, 0, 1

Hence, number of students who joined 3 clubs out of 40=7

We are given that this sample is representative of the student population of 360 students.

Hence, total number of students who joined 3 clubs= 7×9

                                                                                      =63

Hence, correct option is:

B. 63 students

You might be interested in
HELP!!! ASAP!!!!!!!! WILL GIVE LOTS OF POINTS PLUS BRAINLIEST
olya-2409 [2.1K]

Answer:

x = 3.27837238

Step-by-step explanation:

1. The value of a variable that makes an equation true.

2. In chemistry, a solution is a homogeneous mixture composed of only one phase.

3 0
2 years ago
Write down the exact value of:<br> a) cos 90 <br> b) sin 90<br> c) tan 0
viktelen [127]

Answer:

The exact value of

cos90 is 0

sin90 is 1

tan90 is indeterminate.

3 0
2 years ago
Read 2 more answers
Suppose that the following group of values has been entered into the TVM
Mila [183]

Answer:

The answer on A P E X is bal(132)

5 0
2 years ago
The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first deter
VMariaS [17]

Answer:

He must survey 123 adults.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

Assume that a recent survey suggests that about 87​% of adults have heard of the brand.

This means that \pi = 0.87

90% confidence level

So \alpha = 0.1, z is the value of Z that has a p-value of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

How many adults must he survey in order to be 90​% confident that his estimate is within five percentage points of the true population​ percentage?

This is n for which M = 0.05. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.05 = 1.645\sqrt{\frac{0.87*0.13}{n}}

0.05\sqrt{n} = 1.645\sqrt{0.87*0.13}

\sqrt{n} = \frac{1.645\sqrt{0.87*0.13}}{0.05}

(\sqrt{n})^2 = (\frac{1.645\sqrt{0.87*0.13}}{0.05})^2

n = 122.4

Rounding up:

He must survey 123 adults.

6 0
2 years ago
The picture below shows a right-triangle-shaped charging stand for a gaming system:
Kobotan [32]

Answer:

The answer is between first option and last option.

Step-by-step explanation:

That my Contributions to this questions

8 0
3 years ago
Other questions:
  • Worth 60 pts
    9·2 answers
  • How to identify the bases and faces of each figure then name the figure
    13·1 answer
  • What is the effect on the graph of the function f(x) = |x| when f(x) is changed to f( 3/4 x)?
    15·1 answer
  • What number is 120% of 20?
    7·2 answers
  • The table below shows the typical hours worked by employees at a company. A salaried employee makes $67,000 per year. Hourly emp
    10·2 answers
  • Describe the end behavior of the function <br> WILL VOTE BRAINIEST !!!!!!
    8·1 answer
  • A 22° B 54° С What is the measure of AD? O 108° 0 27° 126 54°​
    12·1 answer
  • Find the height of a right circular cone if the slant height is 4 units and the radius is 2 units
    15·1 answer
  • (-2, 8) (9, 10) (1,7) (3, 9) (10, 12)FunctionNot a Function
    5·1 answer
  • Which function has the greatest y-intercept?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!