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
Furkat [3]
3 years ago
12

Samantha and Luis are attempting to determine how many library books each seventh grade student checks out at the same time. Sam

antha surveys every other seventh grade student leaving the library. She samples a total of 40 of the 200 seventh graders. Luis samples 30 of the 200 seventh grade students at random in the school cafeteria. Whose sample is the mostrandom?
Luis because his sample is taken from the population of all seventh graders

Luis because he samples fewer students

Samantha because she samples more students

Samantha because her sample is taken from the population of students who use the library
Mathematics
1 answer:
inessss [21]3 years ago
4 0
I would choose A. Samantha is testing the actual question "how many LIBRARY books are checked out by 7th graders at SAME time". She is still getting a result to the question, but an inaccurate reading as we do not know if ALL 7th graders are present in library and she is only doing a portion of 7th graders checking out books. However, Luis is going to cafe and some may never have gone to library or dislike reading tangible material. Basically both are bad surveyors, but Luis is definlately performing a more random approach.
You might be interested in
If a polygon has six sides, then it is a hexagon. true or false.
slava [35]
If a polygon does not have six sides, then it is not a hexagon.
8 0
3 years ago
Work out the area of this triangle.<br><br> I will mark you as brainliest, please help quick.
nataly862011 [7]

Answer:

<u><em>22 cm²</em></u>

Step-by-step explanation:

Work out the area of this triangle.

Area Formula: 1/2b * h where b = base (11cm) and h = height (4 cm)

1/2 *11 * 4 =

5.5 * 4 =

<u><em>22 cm²</em></u>

3 0
2 years ago
tamara finds the sum of two number cubes rolled at the same time. the chart below shows all possible sums frim thr 36 possible c
Alla [95]
Im notr sure but if we take the chances that the 4 sum has to be either (1.3) (3.1) (2.2) (2.2) that means its chance is 4/36 for each roll which is also 1/9 ,, we can multiply 1/9 times the roll times ( 252 ) we get =28
8 0
3 years ago
What is the volume of A right prism w/ a triangular base w/ sides of 3,4 and 5 w/ a height of 10?
azamat

Check the picture below.

\bf \textit{volume of a pyramid}\\\\ V=\cfrac{1}{3}Bh~~ \begin{cases} B=&area~of\\ &its~base\\ h=&height\\ \cline{1-2} B=&\frac{1}{2}(3)(4)\\ h=&10 \end{cases}\implies V=\cfrac{1}{3}\cdot \cfrac{1}{2}(3)(4)(10)\implies V=20

3 0
3 years ago
A random sample of 85 group leaders, supervisors, and similar personnel revealed that a person spent an average 6.5 years on the
strojnjashka [21]

Answer:

<em>95% of confidence interval for the Population</em>

<em>( 6.1386 , 6.8614)</em>

Step-by-step explanation:

<u><em>Step( i ):-</em></u>

<em>Given random sample size 'n' =85</em>

<em>Mean of the sample size x⁻ = 6.5 years</em>

<em>Standard deviation of Population = 1.7 years</em>

<em>Level of significance = 0.95 or 0.05</em>

<u><em>Step(ii):-</em></u>

<em>95% of confidence interval for the Population is determined by</em>

<em></em>(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })<em></em>

<em></em>(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })<em></em>

<em>( 6.5 - 0.3614 , 6.5 + 0.3614 )</em>

<em>( 6.1386 , 6.8614)</em>

<u><em>Conclusion</em></u><em>:-</em>

<em>95% of confidence interval for the Population</em>

<em>( 6.1386 , 6.8614)</em>

8 0
3 years ago
Other questions:
  • 1,000,000 exponential form
    9·1 answer
  • HELP!! geometry similarities!!!
    15·1 answer
  • What dimension or dimensions do you need to know to find the volume of a sphere?
    14·1 answer
  • The cost to a store for a box of cereal is $2.50. The store is selling the box of cereal for $3.50. What is the percent of marku
    6·2 answers
  • -3 (x - 1 ) + 7x = 27​
    15·1 answer
  • How do you work in detail the problem below?<br><br> 2x=3x+1
    5·1 answer
  • A box has dimensions of 19 inches long, 1.7 feet wide, and 6 inches high. What is the volume of the box? The formula for the vol
    7·2 answers
  • Which is a function A. {(7, 3), (7, 15), (7, -11)} B. all of the options correct
    12·1 answer
  • what percentage of simple interest returest reture must a firm get on their deposit if it wants its birr 25000 to grow to birr 2
    6·1 answer
  • Please help me please help me
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!