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morpeh [17]
4 years ago
7

Interested in the number of hours a day the typical student studies at his university, Paul decides to form several samples of s

tudents and interview each sample at a different time during the semester, including during the final exam period. Which requirement for probability sampling could Paul be violating
Mathematics
1 answer:
hjlf4 years ago
7 0

Answer:

unbiased sample values

Step-by-step explanation:

Unbiased sampling involves eliminating any form of bias in the method of selection of participants in a study in order to draw a conclusion about the population.

Paul had introduced bias in the sampling that out to look at the number of hours a day the typical student studies by introducing the variable of studying during the final exam period.

Most likely all student will study during the final exam period. This will not truly represent the study pattern of the sample population and equal chance of selection of study hours of the students. Hence paul had violated the requirement of unbiased sample values for probability sampling by not doing a random selection or systematic random selection

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Fill in the Blank: 10 quarts =<br> pints
givi [52]

Answer:

10 quarts = 20 pints.

Step-by-step explanation:

Hope my answer has helped you and if not I am sorry.

8 0
3 years ago
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Which equation correctly applies the distributive property?
Sauron [17]
I would say C because D has multiplication instead of adding in the parenthesis and I don't think that is the "basic" way
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3 years ago
The circular base of a cone has a radius of 5 centimeters. The height of the cone is 12 centimeters, and the slant height is 13
Iteru [2.4K]

Answer:

283 cm^2

Step-by-step explanation:

Solution:-

We have a cone with a circular base of radius r = 5 cm

The height of the cone is h = 12 cm

The slant height of the cone is L = 13 cm

We are to determine the surface area of the cone. The surface area of the cone is comprised of two parts:

         Base Area : Circle

               A_1 = \pi r^2\\\\A_1 = \pi 5^2\\\\A_1 = 25\pi

        Curved Surface: conical

                A_2 = \pi * r*L\\\\A_2 = \pi * 5*13\\\\A_2 = 65\pi

The total surface area of the cone can be written as ( A ):

               A = A_1 + A_2\\\\A = (25 + 65 )*\pi \\\\A = 90*(3.14) \\\\A = 282.7433 cm^2

Answer: The surface area of the cone to nearest whole number would be 283 cm^2

4 0
4 years ago
Please help!!
polet [3.4K]

Answer:

The absolute value of the quadratic term,  \left | -\dfrac{1}{2}   \right | is less than 1

Step-by-step explanation:

The given function is y = (-1/2)·x² - 7

The parent function is y = x²

The vertical compression or stretching of a quadratic function is given by the value of the coefficient, <em>a</em>, of the quadratic term, x² of a quadratic function, a·x²

A quadratic function is vertically compressed if the coefficient, \left | a  \right | < 1.

In the given function, y = (-1/2)·x² - 7, the absolute value of the coefficient of the quadratic term, \left | -\dfrac{1}{2}   \right | < 1, therefore, the equation, y = (-1/2)·x² - 7, will be vertically compressed compared to the parent function, y = x².

6 0
3 years ago
3/4 of 48 ....."...................<br> ..<br> ....
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Answer:

36

Step-by-step explanation:

To get 1/4 of 48 we have to divide 48 by 4

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To get 3/4 of 48 we multiply 12 by 3

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3 years ago
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