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
Delvig [45]
3 years ago
8

Can i have some help?? Please???????????????

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
4 0
the second is a negative slope due to the fact the line is going the the left and the ind variable is breakfast dep is performance
You might be interested in
GreenBeam Ltd. claims that its compact fluorescent bulbs average no more than 3.24 mg of mercury. A sample of 25 bulbs shows a m
amm1812

Answer:

Null hypothesis:\mu \leq 3.24  

Alternative hypothesis:\mu > 3.24  

Step-by-step explanation:

1) Previous concepts  and data given

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".

A right tailed test (sometimes called an upper test) is when the alternative hypothesis statement contains a greater than (>) symbol.

\bar X=3.29 represent the sample mean  

s represent the sample standard deviation

n represent the sample selected

\alpha significance level  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean for fluorescent bulbs is no more than 3.24 mg of mercury, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.24  

Alternative hypothesis:\mu > 3.24  

IIf we know the population deviation we can apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

3 0
3 years ago
Emma bystaxx that cost $8.48 she pays with a $10 bill how much change or does she get​
IRISSAK [1]

Answer:

She will get 1.52 back in change

Step-by-step explanation:

We need to subtract the amount of the purchase from the 10 dollars

I like to line it up vertically.

10.00

- 8.48

-------------

We need to borrow

9. 100

- 8. 48

-------------

And borrow again

9.9 10

- 8.4 8

-------------

1 . 5 2


She will get 1.52 back in change

6 0
3 years ago
Kris runs half of the distance to school averaging 6mph. He jogs the rest of the way to school averaging 4 mph, and the whole tr
vodomira [7]
Find the space,

x/12+x/8=25/60\Rightarrow x=2\ \ miles

Divide by velocity,

t=2/8=0.25\ \ hours=15\ \ minutes
5 0
3 years ago
Read 2 more answers
Mentioned some good points about commerce subject in grade 12??​
AVprozaik [17]

Answer:

You can easily be employed in the future

you can be in any profession such as bank accountant,trader, manager at business etc

Step-by-step explanation:

hope you like it

4 0
2 years ago
Read 2 more answers
Identify the distance, to the nearest tenth, between J(−3,4) and K(7,−9).
Andru [333]

Answer: C. 16.4

Concept:

Here, we need to know the idea of the distance formula.

The distance formula is the formula, which is used to find the distance between any two points.

Distance = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

If you are still confused, please refer to the attachment below for a clear version of the formula.

Solve:

<u>Given information</u>

(x₁, y₁) = (-3, 4)

(x₂, y₂) = (7, -9)

<u>Given expression</u>

Distance =\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

<u>Substitute values into the expression</u>

Distance =\sqrt{(7+3)^2+(-9-4)^2}

<u>Simplify value in the parentheses</u>

Distance =\sqrt{(10)^2+(-13)^2}

<u>Simplify exponents</u>

Distance =\sqrt{100+169}

<u>Simplify by addition</u>

Distance =\sqrt{269}

<u>Convert square root to decimal and round the answer to the nearest tenth</u>

\boxed{Distance=16.4}

Hope this helps!! :)

Please let me know if you have any questions

7 0
2 years ago
Read 2 more answers
Other questions:
  • Brainest gets 100 do problem 1-12 show your work
    10·1 answer
  • What is -5 3/4 - 3 1/2​
    13·2 answers
  • 120% of a number is 45 find the number
    10·1 answer
  • Can earn 5 coins
    8·1 answer
  • Three plus the sum of the squares of w and x is 32
    8·1 answer
  • PLEASE HELP ME!
    9·1 answer
  • Solve by using substitution. Express your answer as an ordered pair.
    5·1 answer
  • A bag contain 5 red marbles,4 green marbles and 1 blue marble. A marble is chosen at random from the bag and not replaced; then
    12·1 answer
  • Find the value of k for x^2 - 2kx+7k -12=0 so that they have two equal roots
    11·1 answer
  • What type of property is this: -8x=20
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!