Ask question

Ask question

All categories

3 years ago

11

A)line a and line b B)line b and line c C)line b and line d D) line c and line d

1 answer:

jarptica [38.1K]3 years ago

6 0

A)line a and line b is your answer.

You might be interested in

For a binomial process, the probability of success is 40 percent and the number of trials is 5. Find the standard deviation.

Yakvenalex [24]

Answer:

$Sd(X) =\sqrt{1.2}=1.095$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=5, p=0.4)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

The mean for the binomial distribution is given by:

$E(X) =np=5*0.4=2$

And the variance is given by:

$Var(X) = np(1-p) =5*0.4*(1-0.4)=1.2$

And the deviation is just the square root of the variance so we got:

$Sd(X) =\sqrt{1.2}=1.095$

7 0

2 years ago

HELP ME HOW DO I DO THIS ITS REALLY HARD

storchak [24]

Answer:

I can’t just tell you the answer cause that’s all your looking for let me know what u need help with

Step-by-step explanation:

4 0

1 year ago

Read 2 more answers

Homework help, one of the few I have

Alex73 [517]

Answer:

x=4 and the solution is not extraneous

Step-by-step explanation:

$\sqrt{2x+1}=3 \\\\2x+1=9 \\\\2x=8 \\\\x=4$

This solution is not extraneous, because plugging it back in you get:

$\sqrt{2(4)+1}=3 \\\\\sqrt{9}=3 \\\\3=3$

Hope this helps!

8 0

2 years ago

Read 2 more answers

Josie is training for a race.The ratio of the number of minutes she runs to the number of miles she runs is 24 to 3 she plans to

Fiesta28 [93]

Answer:

80 minutes

Step-by-step explanation:

She runs an 8 minute mile (which you can do by dividing 24/3), then how long will it take her to run 10 miles?

All you have to do from there is multiply 8x10, which gives you 80.

It'll take 80 minutes of 1:20 hours

7 0

2 years ago

Read 2 more answers

Suppose that, in order to estimate the proportion of students who wear glasses, a sample of 100 students was collected and showe

Tomtit [17]

99.7 because the multiplier is 3.00

7 0

2 years ago