In how many different ways can 5 boys be seated in 3 chairs

Mathematics

1 answer:

Gekata [30.6K]2 years ago

4 0

10 ways
There are (53)=10 ways of picking 3 seats from 5.

You might be interested in

Simplify (2^8*3^-5*6^0)^-2 * (3^-2\2^3)-^4 * 2^28=

marin [14]

This is pretty hard but um in decimal form it would make 0.9010162353515625, but to simplify it the answer would be 0.9

3 0

3 years ago

As a member of the student council at your school, you want to determine if the seventh-grade students prefer to

Jet001 [13]

Answer: I dont know

Step-by-step explanation: i need more information

4 0

2 years ago

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customer

AlladinOne [14]

Answer:

$4-2.326\frac{1}{\sqrt{100}}=3.767$

$4+2.326\frac{1}{\sqrt{100}}=4.233$

So on this case the 98% confidence interval would be given by (3.767;4.233)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=4$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=1$ represent the population standard deviation

n=100 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.98 or 98%, the value of $\alpha=0.02$ and $\alpha/2 =0.01$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.01,0,1)".And we see that $z_{\alpha/2}=2.326$