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Korolek [52]
3 years ago
9

last month you swim the 50m freestyle in 28.38 seconds. Today you swim it in 27.33 seconds what is your percent of change round

to the nearest tenth of a percent if necessary
Mathematics
1 answer:
kiruha [24]3 years ago
5 0
27.33/28.38 = 0.96300211
Making it a percent and rounding it to the nearest tenth it’ll be 96.3%
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Complete Question

The  complete question is shown on the first uploaded image

Answer:

a

\^ p_1 =  0.8102

b

\^ p_2 =  0.6904

c

\^ p_3 =  0.3701

Step-by-step explanation:

From the question we are told that

   The sample size is  n  =  743

    The number that said social media makes them feel more connected  to what is going on in their friends' lives is  k =  602

   The number that said social  media helps them interact with a more diverse group of people is  y =  513

   The  number that said feel pressure to post content that will get a lot of likes and comments is  c  =  275

Generally a point estimate of the proportion of teens aged 13 to 17  who say social media makes them feel more connected to what is going on in their friends' lives is mathematically represented as

        \^ p_1 =  \frac{k}{n}

=>      \^ p_1 =  \frac{602}{743 }\

=>      \^ p_1 =  0.8102

Generally a point estimate of the proportion of teens aged 13 to 17  who say social media helps them interact with a more diverse group of people is mathematically represented as

        \^ p_2 =  \frac{k}{n}

=>      \^ p_2 =  \frac{513}{743 }\

=>      \^ p_2 =  0.6904

Generally a point estimate of the proportion of teens aged 13 to 17   who feel pressure to post content that will get a lot of likes and comments is mathematically represented as

        \^ p_3 =  \frac{k}{n}

=>      \^ p_3 =  \frac{275}{743 }

=>      \^ p_3 =  0.3701

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