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shepuryov [24]
2 years ago
6

In a recent survey, the proportion of adults who indicated mystery as their favorite type of book was 0.325. Two simulations wil

l be conducted for the sampling distribution of a sample proportion from a population with a true proportion of 0.325. Simulation A will consist of 1,500 trials with a sample size of 100. Simulation B will consist of 2,000 trials with a sample size of 50. Which of the following describes the center and variability of simulation A and simulation B?
A) The centers will roughly be equal, and the variabilities will roughly be equal.
B) The centers will roughly be equal, and the variability of simulation A will be greater than the variability of simulation B.
C) The centers will roughly be equal, and the variability of simulation A will be less than the variability of simulation B.
D) The center of simulation A will be greater than the center of simulation B, and the variability of simulation A will roughly be equal to the variability of simulation B.
E) The center of simulation A will be less than the center of simulation B, and the variability of simulation A will be greater than the variability of simulation B.
Mathematics
1 answer:
Virty [35]2 years ago
3 0

Answer:

C) The centers will roughly be equal, and the variability of simulation A will be less than the variability of simulation B.

Step-by-step explanation:

The center for Simulation A and Simulation B will be roughly equal.

Overall Sample size of Simulation A = 1500 * 100 = 150000

Overall Sample size of Simulation B = 2000 * 50 = 100000

Since the sample size for Simulation A is greater, the variability of Simulation will be less.

Therefore, The answer is  C) The centers will roughly be equal, and the variability of simulation A will be less than the variability of simulation B.

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iogann1982 [59]
Answer: The word "ensures" implies that it is certain.

In the case of the study, they simply found that the average salary is greater for college graduates. This doesn't mean that in every case the college graduate makes more money.

The problem is the word "ensures". Our study doesn't show certainty only a general pattern.
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2 years ago
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There are 8 sophomores on the academic team. At the last competition, they each took the math test. Their scores were 82%,
AysviL [449]

Answer:

79%

Step-by-step explanation:

<em><u>m</u></em><em><u>e</u></em><em><u>d</u></em><em><u>i</u></em><em><u>a</u></em><em><u>n</u></em><em><u> </u></em>is the middle no.

arrange the scores in descending order

72,74,76,(78,80),82,92,92

78+80, divide 2= 79%

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2 years ago
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While investigating customer complaints, the customer relations department of Sonic Air found that 15 percent of the flights arr
Sonja [21]

Answer:

P(L ∩ <u>O)</u> = 0.23

Step-by-step explanation:

We are going to define the probabilistic events how:

E: Flights arrive early          P(E) =0.15

T: Flights arrive on time      P(T) = 0.25

O: Flights are overbooked  P(O) = 0.65

<u>O</u>: Flights are not overbooked

L: Flights arrive late

How  72 percent are late or not overbooked, then P(<u>O</u> ∪ L ) = 0.72

Our question is : What is the probability that the flight selected will be late and not overbooked? It means, what is P(L ∩ <u>O)</u>

This probability may be calculated how:

P(L ∩ <u>O)</u> =  P(L) + P (<u>O</u>) - P(<u>O</u> ∪ L )

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   1 = P(L) + 0.15 + 0.25

   P(L) = 0.6

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P(L ∩ <u>O)</u> = 0.6 + 0.35 - 0.72

P(L ∩ <u>O)</u> = 0.23

4 0
2 years ago
Let S={a,b,c}. a. List all permutations of S. b. List all 2-combinations of S.
Korolek [52]

Answer: The answer is as follows:

Step-by-step explanation:

Given that,

S = {a,b,c)

(a) All the permutations of S are as follows:

= 3!

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= 6

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(b) All 2-combinations of S are as follows:

= 3

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Ben scores 56 out of 79 marks in a math test.What is his score as a percentage t0 1 decimal place
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56/79=.7088

The answer is 70.9%

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