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worty [1.4K]
3 years ago
6

A researcher wanted to know if the content of television programs has an impact on viewer's recall of ad content. He randomly as

signed 108 people to view a program with violent content, and 110 people to view a program with neutral content. The same 9 commercials were inserted into each program. After viewing the program, the subjects were asked to recall the brands advertised in the commercials. The average number of brands recalled for those who saw the violent program was 3.77 with standard deviation 1.87. The average number of brands recalled for those who saw the neutral program was 4.65 with standard deviation 1.67. The standard error for A researcher wanted to know if the content of tele is
A. 0.180
B. 0.058
C. 0.240
Mathematics
1 answer:
Mazyrski [523]3 years ago
5 0

Answer:

A. 0.180

Step-by-step explanation:

The standard error for A researcher wanted to know if the content of tele

researcher A is

N =He randomly assigned 108 people to view a program with violent content,

The average number of brands recalled for those who saw the violent program was 3.77 with standard deviation 1.87

The standard deviation of a sampling distribution of mean values is called the standard error of the means, thus standard error of the means,

σx = σ /√N

When sampling is done with replacement, the total number of possible samples (two or more can be the same) is infinite.

therefore,

σx = σ /√N

σx = 1.87 / square root of 108  

σx = 1.87 / 10.4 = 0.1798 = ±0.18

The standard error for program with violent content is ±0.18

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Marat540 [252]

Answer:

x=25.6°, left angle is 80.7°, right is 99.3°.


Step-by-step explanation:

The two expressions add to 180°.

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3 years ago
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Answer:

8,\sqrt{72},9 this is from least to greatest

Step-by-step explanation:

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Hope this helps

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Out of 180 students, 50 students play Piano, 68 play Guitar, and 59 play Flute
MaRussiya [10]

Answer:

Step-by-step explanation:

A Venn diagram depicts the logical relationships between two or more sets of elements by using alternating circles or other shapes. They're often used to visually arrange information, showing how objects are similar and different. In the fields of mathematics and statistics, Venn diagrams, also known as "set diagrams" or "logic diagrams," are commonly used.

From the given information:

Since we are to represent the given question into a Venn diagram, the diagram is being attached in the image below.

From the image below, we represent:

P =students that played Paino

G = students that played guitar

F = students that played flute

P = 50

G = 68

F = 59

(PUG) -35

(PUF) = 59

(GUF) = 40

since the value of (PUGUF) is not given, we represent it with x.

See the attached image below for diagrammatic representation of the Venn diagram.

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