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3 years ago

Determine whether each sample may be biased. Explain.

Mathematics

1 answer:

Naya [18.7K]3 years ago

3 0

Answer:

not number 5 is is biased.

Number 6 is not biased.

Number 7 is not biased.

Step-by-step explanation:

Biased means of an estimator is the difference between this estimator's expected value and the true value of the parameter being estimated.

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3 years ago

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3 years ago

Please help!❤️<br><br> 9/4y-2=25<br> Please solve and show work!!

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3 years ago

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2 years ago

A tourist first walked 17km with a speed of v km/h. Then he hiked 12 km uphill with the speed that was 2 km/hour less than his o

ExtremeBDS [4]

Answer: $t=\frac{17}{v}+\frac{12}{v-2}$

Step-by-step explanation:

Given: A tourist first walked 17km with a speed of v km/h.

Since $Speed=\frac{distance}{time}$

therefore, $Time=\frac{distance}{speed}$

Let $t_1$ be the time he walked with speed v.

then $t_1=\frac{17}{v}$

Also he hiked 12 km uphill with the speed that was 2 km/hour less than his original speed.

Let $t_2$ be the time he hiked 12 km,

Then $t_2=\frac{12}{v-2}$

The total time for the whole trip is given by:-

$t=t_1+t_2=$

Substitute the values of $t_1$ and $t_2$ in the equation, we get

$t=\frac{17}{v}+\frac{12}{v-2}$

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3 years ago