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ehidna [41]
3 years ago
8

Fifty people were surveyed about their favorite flavor of frozen yogurt. The results of the survey are displayed in the circle g

raph.
How many people prefer strawberry?

Mathematics
2 answers:
Allushta [10]3 years ago
5 0
18% of 50 people said they liked strawberry. The word 'of' in math means multiply, so 18%•50 or .18•50. Multiply them together: .18•50=9.00 or just 9. 9 people like strawberry ice cream :)
lisov135 [29]3 years ago
5 0

Answer:

Hence, 9 people prefer strawberry.

Step-by-step explanation:

Total number of people that were surveyed are : 50.

From the circle diagram or circle graph the number of people according to there choices of favorite flavors of Frozen Yogurt is given as:

       Flavors                     Percent

Peanut Butter                   20%

Banana                               4%

Vanilla                                22%

 Strawberry                         18%

Chocolate                            36%

Hence, the percent of people that  prefer Strawberry is 18%

i.e. 18% of total people surveyed.

i.e. 18% of 50

=\dfrac{18}{100}\times 50\\\\=9

Hence, the number of people who prefer strawberry is:

9        

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Now PR

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Now the last side QR

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8 0
3 years ago
Read 2 more answers
you want to create a 99 confidence interval with a margin of error of 25 assuming that the population standard deviation is equa
Ahat [919]

Answer:

The minimum sample size is 239.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.99}{2} = 0.005

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.005 = 0.995, so Z = 2.575.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

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This means that M = 0.25

What's the minimum size of the sample?

M = z\frac{\sigma}{\sqrt{n}}

0.25 = 2.575\frac{1.5}{\sqrt{n}}

0.25\sqrt{n} = 2.575*1.5

\sqrt{n} = \frac{2.575*1.5}{0.25}

(\sqrt{n})^2 = (\frac{2.575*1.5}{0.25})^2

n = 238.7

Rounding up:

The minimum sample size is 239.

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