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Andrej [43]
3 years ago
10

Suppose in a representative sample of adult Americans ages 26 to 32 years, 27% indicated that they owned a fitness band that kep

t track of the number of steps walked each day and their daily activity levels. Suppose that the sample size was 500. Is there convincing evidence that more than one-quarter of all adult Americans in this age group own a fitness band
Mathematics
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer: Yes, we have.

Step-by-step explanation:

Going by the details provided, Probability of success of choosing a citizen with a fitness band 27%

The probability function for expected value shows the Formula to know with sufficient dependence what proportion of the sampled people will have the fitness band.

Since 27% of 500 = 135.

and 135 is more than a quarter of 500(125), then we have enough Evidence that more than a quarter of this age group own a fitness band.

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emmasim [6.3K]

Answer:

y = - 2x + 6

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ )  = (1, 4 ) and (x₂, y₂ ) = (2, 2 )

m = \frac{2-4}{2-1} = \frac{-2}{1} = - 2 , then

y = - 2x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (2, 2 ) , then

2 = - 4 + c ⇒ c = 2 + 4 = 6

y = - 2x + 6 ← equation of line

3 0
2 years ago
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katie collected 470 cans the first week of the school project. The second week she collected 105 less than the first week. How m
valentinak56 [21]

Answer:

Katie collected 365 cans in the second week.

Step-by-step explanation:

Because Katie collected 470 cans in the first week, and 105 less in the second week, we know to subtract 105 from 470, which gives us 365 cans.

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3 years ago
Alexander can earn money for the cans he recycles. Which of the following statements describes the variables in this situation c
Murrr4er [49]
I believe that your answer to this question would be "A" because the number of cans recycled don't depend on anything but the amount of money does. So your answer is "A"!!!! X) :D :)
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Answer:

see explanation

Step-by-step explanation:

Using the rule of exponents

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Step-by-step explanation:

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