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zalisa [80]
3 years ago
6

The distribution of sample means is not always a normal distribution under what circumstances

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
7 0

The distribution of sample means will not be normal when it is grounded on small samples (n < 30) carefully chosen from a population that is not normal because if n < 30, you would the use the t distribution. Normal distribution would only be use if the sample size is large. Large in this case relies on the requirements for accuracy and the shape of the underlying population.

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Is (2, 2) a solution of y &lt; 4x - 6?<br> Choose 1 answer<br> yes or no
zalisa [80]

No, (2,2) is not solution of y < 4x - 6

Step-by-step explanation:

To solve above linear problem, we use standard method of  Back- Substitution.

First of all, A point (2,2) only becomes solution of equation, if it satisfies equation y < 4x - 6.

Here, the  y < 4x - 6  seems to be like a linear equation.

In this Equation, using  Back- Substitution method,

Point (2,2) : first digit 2 corresponds to x- coordinate and second digit 2 corresponds to y-coordinate.

           y < 4x - 6.....(1)     \\\         x= 2        .....(2)       \\\       y= 2        .....(3)

By putting value of x and y in equation (1),

Equation becomes,

        2 <  4 \times 2  - 6

       2 < 8       -  6

       2 <  2      .... not true mathematically.

Finally, the result came is not true. Therefore, (2,2) is not solution for equation

y < 4x - 6          

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