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Kamila [148]
4 years ago
9

A movie theater conducted a survey to see what customers preferred at the concession stand. the theater asked every fifth person

who entered the movie theater every friday for a month what his or her favorite movie snack was. were the results of the survey valid?yes, because the theater surveyed a random sample.yes, because the theater only surveyed children.no, because the theater did not survey everyone in the theater.no, because the theater did not use a random sample.
Mathematics
2 answers:
klio [65]4 years ago
5 0
Yes, because the theather surveyed random sample.

do u need an explanation?






slava [35]4 years ago
4 0

Answer: Yes, because the theater surveyed a random sample.  Please give me hearts and stars.

Step-by-step explanation:

Results of a survey are valid if the sample space is representative of the population. The movie theater surveyed every fifth person which means all age groups and genders were represented, and the people were selected randomly.  Therefore, the results of the survey were valid because the theater surveyed a random sample.

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Sergeeva-Olga [200]

Answer:

11.9 mm

Step-by-step explanation:

We can find d by applying the cosine rules.

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d²  = 142.25

d = √142.25

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5 0
3 years ago
On a test that has a normal distribution, a score of 49 falls two standard deviations below the mean, and a score of 61 falls on
Zolol [24]

The mean of this test will be 57.

<h3>What is Standard Deviation and Mean?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

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Let Mean be 'm'

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Solving the above two equation we get

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Learn more about mean and standard deviation here:

brainly.com/question/16030790

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6 0
2 years ago
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6 0
4 years ago
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