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Sonja [21]
2 years ago
11

If 140 people were surveyed, how many preferred crab?

Mathematics
1 answer:
Cloud [144]2 years ago
5 0

If 140 people were surveyed, from the given table, the number of people that preferred crab is; 42

<h3>How to work with percentages?</h3>

We are given;

Total sample size; n = 140

Now, from the table we see the percentages that preffered each seafood.

Percentage that preferred Shrimp = 24%

Percentage that preferred Crab = 30%

Percentage that preferred Fish = 36%

Percentage that preferred Neither = 10%

Thus;

Number that preferred Crab = 30% * 140

Number that preferred Crab = 42 people

Read more about Percentages at; brainly.com/question/843074

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Alternate hypothesis: x < 9.02 cm³

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mean=M= 8.12 cm³

standard deviation= s= 0.8 cm³

According to the sample, with 99% confidence, t statistic for the value X=9.02 can be found using the formula:

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  • s is the standard deviation of the sample (0.8)
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If we put these numbers in the formula:

t=\frac{9.02-8.12}{\frac{0.8}{\sqrt{13} } } =4.056

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