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RideAnS [48]
3 years ago
5

The student government at a college is interested in determining how important intercollegiate sports are to the students there.

Because all students have e-mail accounts, the student government can send a survey to all the students. About 50% of the students respond. Which is the most likely bias in this sample?
Mathematics
1 answer:
melomori [17]3 years ago
5 0

Answer: self-selection bias

Step-by-step explanation:

In statistics, self-selection bias occurs in a situation where individuals select themselves into a group, leading to a biased sample with nonprobability sampling.

It is the problem that very always results when survey respondents are allowed to decide entirely for themselves whether or not they are interested in a survey. To the extent that respondents' propensity for participating in the study is correlated with the substantive topic the researchers are trying to study, there will be self-selection bias in the resulting data.

In most cases, self-selection will lead to biased data, as the respondents who choose to participate will not well represent the entire target population.

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Rosters Chicken advertises​ "lite" chicken with​ 30% fewer calories than standard chicken. When the process for​ "lite" chicken
PilotLPTM [1.2K]

Answer:

UCL (x bar) =  424

LCL (x bar) =  376

Step-by-step explanation:

Given:

Average calories contained, μ = 400

Standard deviation, σ  = 30 calories

Sample size, n = 25

a) UCL (x bar) = \mu+\frac{4\sigma}{\sqrt{n}}

On substituting the respective values, we get

UCL (x bar) = 400+\frac{4\times30}{\sqrt{25}}

or

UCL (x bar) =  424

Similarly,

LCL (x bar) =  \mu-\frac{4\sigma}{\sqrt{n}}

On substituting the respective values, we get

LCL (x bar) = 400-\frac{4\times30}{\sqrt{25}}

or

LCL (x bar) =  376

4 0
3 years ago
A. Find a power function that models the data below.
zalisa [80]

Using Visual inspection, the model which fits the data in the distribution better is the power function.

The power and linear functions can of the data can both be modeled using technology,

<u>Using Technology</u> :

The power function in the form y = Ax^{B} which models the data is 1.926x^{1.662}

The linear function in the form y = Bx + A which models the data is y = 7.429x - 8.333

  • Where A = intercept and B = slope

  • From the model, correlation coefficient given by the power and linear models are 0.999 and 0.986 respectively.

  • Hence, the power model is a better fit for the data than the linear model.

Therefore, Inspecting the models visually, the power function fits the data better as the points on the curve are closer to the regression line than on the linear model.

Learn more :brainly.com/question/18405415

6 0
2 years ago
Use algebraic rules of equations to predict the solution to the system of equations. Include all of your work for full credit.
bezimeni [28]
Use substitution
x+(2x-1)=-4
3x-1=-4
3x=-3
x=-1
7 0
3 years ago
Help math question derivative!
atroni [7]
Let f(x)=\sec^{-1}x. Then \sec f(x)=x, and differentiating both sides with respect to x gives

(\sec f(x))'=\sec f(x)\tan f(x)\,f'(x)=1
f'(x)=\dfrac1{\sec f(x)\tan f(x)}

Now, when x=\sqrt2, you get

(\sec^{-1})'(\sqrt2)=f'(\sqrt2)=\dfrac1{\sec\left(\sec^{-1}\sqrt2\right)\tan\left(\sec^{-1}\sqrt2\right)}

You have \sec^{-1}\sqrt2=\dfrac\pi4, so \sec\left(\sec^{-1}\sqrt2\right)=\sqrt2 and \tan\left(\sec^{-1}\sqrt2\right)=1. So (\sec^{-1})'(\sqrt2)=\dfrac1{\sqrt2\times1}=\dfrac1{\sqrt2}
5 0
3 years ago
Raina, Trey, and Ali have a total of $145 in their wallets. Trey has 4 times what Ali has. Raina has $7 more than Ali. How much
miv72 [106K]

Answer:

Step-by-step explanation:

If ali has 23 so Raina has 7 more than Ali = 23 + 7 = 30

And trey has 4 times as much as Ali = 23 x 4 = 92

Total = 92 + 23 + 30 = 145

6 0
2 years ago
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