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
uysha [10]
3 years ago
13

A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20, = 30,

and s = 10. Based on this information, and using a 95% confidence level, which of the following statements is true? a. The margin of error is approximately 4.68. b. The margin of error is approximately 3.24. c. The standard deviation of the sampling distribution of is .50. d. The critical value is 1.96. e. The critical value is 1.7921.
Mathematics
1 answer:
Flura [38]3 years ago
5 0

Answer:

b) The margin of error is approximately 3.24

e) The critical value is 1.7921.

Step-by-step explanation:

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

Given sample size 'n' =20

Given sample standard deviation 's' = 10

<u><em> Margin of error </em></u>

<u><em>The margin of error is determined by</em></u>

<u><em /></u>M.E = \frac{t_{\alpha } S.D }{\sqrt{n} }<u><em /></u>

<em>The level of significance ∝ =0.95</em>

<em>The degrees of freedom = n-1 = 20-1=19</em>

t₀.₉₅ = 1.729

M.E = \frac{1.729 X10 }{\sqrt{20} }

Margin of error = 3.866

Step(ii):-

<u><em> Margin of error </em></u>

<u><em>The margin of error is determined by</em></u>

<u><em /></u>M.E = \frac{t_{\alpha } S.D }{\sqrt{n} }<u><em /></u>

<u><em>Given another sample size n =30</em></u>

<em>The level of significance ∝ =0.95</em>

<em>The degrees of freedom = n-1 = 30-1=29</em>

t₀.₉₅ = 1.70

M.E = \frac{1.7021 X10 }{\sqrt{30} } =3.24

<u><em>Margin of error = 3.24</em></u>

You might be interested in
Which of the following statements is true for the logistic differential equation?
solong [7]

Answer:

All of the above

Step-by-step explanation:

dy/dt = y/3 (18 − y)

0 = y/3 (18 − y)

y = 0 or 18

d²y/dt² = y/3 (-dy/dt) + (1/3 dy/dt) (18 − y)

d²y/dt² = dy/dt (-y/3 + 6 − y/3)

d²y/dt² = dy/dt (6 − 2y/3)

d²y/dt² = y/3 (18 − y) (6 − 2y/3)

0 = y/3 (18 − y) (6 − 2y/3)

y = 0, 9, 18

y" = 0 at y = 9 and changes signs from + to -, so y' is a maximum at y = 9.

y' and y" = 0 at y = 0 and y = 18, so those are both asymptotes / limiting values.

8 0
2 years ago
4. Simplify -6(3 – 5s + 12t – 2u)
Elan Coil [88]
-18 +30s -72t +12u is the answer
8 0
2 years ago
Help please on this ​
jenyasd209 [6]

Answer:

there is not enough information because x and 55 are parrallel, not congruent.

Step-by-step explanation:

3 0
3 years ago
What is the range of the relation in the table below ???
natta225 [31]

Answer:

range : {0, 2, 4}

Step-by-step explanation:

write down the same range once.

4 0
3 years ago
QUESTION IN PHOTO, HELP ASAP
Luba_88 [7]
I don’t get the question? What are you trying to find?
6 0
2 years ago
Other questions:
  • The graph below shows the water level of a tank that is emptying over time.
    14·1 answer
  • Which graph represents the function of f(x) = the quantity of 4 x squared minus 4 x minus 8, all over 2 x plus 2?
    12·1 answer
  • Will give brainliest please help ASAP
    7·1 answer
  • Farmer fred has 200 sheep on his farm. he sells 40 of them. what percentage of his sheep does he have left?farmer fred has 200 s
    8·2 answers
  • Ben bought a movie ticket for $37.50. He got $12.50 for change. How much was the ticket?
    11·2 answers
  • Solve -7+11-(-3 ) what is the answer need asap for class​
    7·1 answer
  • Put these fractions in order from least to greatest. 3/12 1/6 2/3
    6·2 answers
  • Can someone help me please!!
    13·2 answers
  • Solve for x please :))
    15·1 answer
  • Last weekend, the number of visitors at a zoo was z. This weekend, the number of visitors at the zoo can be represented by the g
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!