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Ghella [55]
3 years ago
7

Prisha spends about 35 minutes reading each day. She also listens to music for an average of 40 minutes per day, and she listens

to podcasts for 1.25 hours four times a week. If Prisha decides to increase the time she does each activity by 14 , find the total number of hours she spends reading and listening to music and podcasts in a year with a reasonable level of accuracy.
Mathematics
1 answer:
navik [9.2K]3 years ago
5 0

Answer:

She spends:

2980.83 hours reading in a year,

3406.67 hours listening to music in a year,

and 3650 hours listening to podcasts in a year.

Step-by-step explanation:

Let's multiply each activity she does by 14 and take it to a year:

-Reading

R = 14*35 \frac{min}{d} = 490 \frac{min}{d}*\frac{365 d}{1 y}*\frac{1 h}{60 min} = 2980.83 \frac{h}{y}

She spends 2980.83 hours reading in a year.

-Listenign to music:

M = 14*40 \frac{min}{d} = 560 \frac{min}{d}*\frac{365 d}{1 y}*\frac{1 h}{60 min} = 3406.67 \frac{h}{y}  

She spends 3406.67 hours listening to music in a year.

-Listenign to podcasts:

P = 14*1.25*4 \frac{h}{w} = 70 \frac{h}{w}*\frac{1 w}{7 d}*\frac{365 d}{1 y} = 3650 \frac{h}{y}

She spends 3650 hours listening to podcasts in a year.

I hope it helps you!  

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Answer:

It is not reasonable that the state education department claims the percentage for the entire state is 73%.

Step-by-step explanation:

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Firstly, the pivotal quantity for finding the confidence interval for the population proportion is given by;

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where, \hat p = sample proportion of high school students who went outside more during school hours as elementary school students than they do now as high school students =  \frac{191}{288} = 0.66

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            p = population percentage for the entire state

<em> Here for constructing a 90% confidence interval we have used a One-sample z-test for proportions. </em>

<em> </em>

The margin of error is given by;

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