Is it unusual for the sampling mean to be exactly the same as the population mean?

Mathematics

1 answer:

8090 [49]4 years ago

4 0

Answer:

Step-by-step explanation:

This is because the sample should ideally be representative of the whole population. If the right sampling methods are used, the sample should well exhibit the properties of the whole population. The sample mean should be as precise as possible to the population mean , hence it is not unusual for the sampling to mean to be exactly the same as the population mean

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16) The manager of a bulk foods establishment sells a trail mix for $8 per

zaharov [31]

Answer:

The amount of peanuts to use is 5 pounds and that of cashews is 30 pounds.

Step-by-step explanation:

Let the amount of peanut to use to be x

Let the amount of cashews to use to be 35-x

Form equations to compare amounts for individual foods and the mixture

$8x+15(35-x)=35(14)\\\\8x+525-15x=490\\\\7x=35\\\\x=5\\\\$

So the pounds to be used for peanuts is 5 pounds

The pounds to be used for cashews will be 35-x= 35-5=30 pounds

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4 years ago

We’ve seen that natural numbers are closed under addition. Determine the closure of natural numbers under the other three operat

nevsk [136]

Natural numbers are not closed under subtraction. In fact, any operation $x-y,\quad y>x$ has no solution using natural numbers.

Natural numbers are closed under multiplication. In fact, any operation $x\cdot y$ means to sum $x$ by itself $y$ times, and we already know that natural numbers are closed under sum.

Natural numbers are not closed under division. In fact, if $y$ doesn't divide $x$ , any operation $\frac{x}{y}$ has no solution using natural numbers.