How many simple random samples of size 3 can be selected from a population of size 6?

Mathematics

1 answer:

ale4655 [162]3 years ago

6 0

This would be 6C3

= 6*5*4
---------- = 20 answer
3*2*1

You might be interested in

Help me plz idk how

Alika [10]

Hello there,

For problem one
The mile is an appropriate unit to measure the distance run over a one-week period.

For problem two
The pound is an appropriate unit to measure the weight of a bag of sugar.

For problem three
The yard is an appropriate unit to measure the distance run on a football field.

Hope this helps!

8 0

3 years ago

What is the distance between -7.5 and -15.3 on a number line

timama [110]

Okay. To find the distance apart from each other, subtract 15.3 and 7.5. When you do that, you should get 7.8. -7.5 and -15.3 are 7.8 units away on a number line.

8 0

3 years ago

Simplify 32 ⋅ 35. (4 points) 37 310 97 910 Pllllsssss help

postnew [5]

Answer:

what the heck is that i rhink you mess up

4 0

3 years ago

Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. What p

klasskru [66]

Answer:

99.89% of students scored below 95 points.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 76.4, \sigma = 6.1$