1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
solniwko [45]
3 years ago
10

Answers plz i don’t get it

Mathematics
1 answer:
masha68 [24]3 years ago
3 0
The third option has the highest value
You might be interested in
Again ... Commute times in the U.S. are heavily skewed to the right. We select a random sample of 500 people from the 2000 U.S.
VladimirAG [237]

Answer:

We conclude that the mean commute time in the U.S. is less than half an hour.

Step-by-step explanation:

We are given that a random sample of 500 people from the 2000 U.S. Census is selected who reported a non-zero commute time.

In this sample the mean commute time is 27.6 minutes with a standard deviation of 19.6 minutes.

Let \mu = <u><em>mean commute time in the U.S..</em></u>

So, Null Hypothesis, H_0 : \mu \geq 30 minutes      {means that the mean commute time in the U.S. is more than or equal to half an hour}

Alternate Hypothesis, H_A : \mu < 30 minutes     {means that the mean commute time in the U.S. is less than half an hour}

The test statistics that would be used here <u>One-sample t-test statistics</u> as we don't know about population standard deviation;

                           T.S. =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean commute time = 27.6 minutes

            s = sample standard deviation = 19.6 minutes

            n = sample of people from the 2000 U.S. Census = 500

So, <u><em>the test statistics</em></u>  =  \frac{27.6 -30}{\frac{19.6}{\sqrt{500} } }  ~ t_4_9_9

                                       =  -2.738

The value of t test statistic is -2.738.

Since, in the question we are not given with the level of significance so we assume it to be 5%. <u>Now, at 5% significance level the t table gives critical values of -1.645 at 499 degree of freedom for left-tailed test.</u>

Since our test statistic is less than the critical value of t as -2.378 < -1.645, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis.</u>

Therefore, we conclude that the mean commute time in the U.S. is less than half an hour.

4 0
3 years ago
Please help! I will give brainlyist!​
vlabodo [156]

Answer:

I dont really know what it is id help but im confused

Step-by-step explanation:

7 0
2 years ago
I need help with this math please​
Alexus [3.1K]

In order to solve using elimination, we need to be able to get rid of one variable, so that we can solve for the other. We need to subtract these two equations given from one another, or multiply the bottom equation by a negative and add them together.

(-5x + 6y = 8) - (-5x + 4y = 2)

(-5x + 6y = 8) + (5x - 4y = -2)

0x + 2y = 6

2y = 6

y = 3

Now that we know the value of one variable, we can take that value and plug it back into one of the original equations and solve for the value of the other variable.

-5x + 6y = 8

-5x + 6(3) = 8

-5x + 18 = 8

-5x = -10

x = 2

The solution to this system of equations is (2, 3).

Hope this helps!! :)

5 0
2 years ago
Read 2 more answers
Helpppppppppppp me plssss
Inessa05 [86]

Answer:

haaaaaaaaaaaaaaaaaaaaaaaaaa

8 0
2 years ago
Read 2 more answers
(-7-3i)(11-8i)<br> Simplified into the a+bi form
shtirl [24]

Answer: what

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • What is the relationship between the 6 in the number 7664
    15·1 answer
  • How do you know a number is odd?
    11·2 answers
  • The husband and wife artistic team named
    6·1 answer
  • The square of a number plus the number is 72. Find the number(s)
    10·2 answers
  • Of the 12 people attending a lecture, 2 have brown eyes. What is the probability that a randomly selected person will have brown
    7·1 answer
  • 1. Your algebra test scores for one semester.
    11·1 answer
  • In the figure below, m
    6·2 answers
  • Is 300 mm greater than 3 cm
    8·2 answers
  • (sin^4 theta - 1)/(cos^2 theta) = cos^2 theta - 2
    10·1 answer
  • It takes to complete 200 rotations in 1 minute. How long does it take to complete 300 rotations? How many times does it rotate i
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!