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
andrey2020 [161]
3 years ago
5

Which of the following hypotheses is a null hypothesis? Group of answer choices There is no difference in the monthly grocery bi

lls of families with one child and families with two children Grocery bills vary according to the number of meals eaten outside the home Families with two children have significantly higher grocery bills than families with just one child There is a relationship between grocery bills and the number of people in a household The mean age in a household is predictive of the amount of money sent on food each month
Mathematics
1 answer:
blsea [12.9K]3 years ago
3 0

Answer:

The following hypotheses is a null hypothesis:

There is no difference in the monthly grocery bills of families with one child and families with two children.

Step-by-step explanation:

In inferential statistics, it is a null hypothesis because it is assuming to be true until evidence indicates otherwise, it is a general position without relationship between the two measured phenomena (one child and two children), testing (accepting, approving, rejecting, or disproving), concluding that  there are not reasons for believing that there is a relationship between two phenomena  and gives precise criteria for rejecting the null hypothesis within a confidence level.

You might be interested in
3 1/4 - 2 1/3 what is the answer please explain
anastassius [24]

Answer:

it is 0.91<u>6 (</u>the six is repeated. a line under a number means repeated in this case)

Step-by-step explanation:

First you take 3 1/4 and turn it into 13/4 and turn 2 1/3 into 7/3 and transform those into decimals 13/4 = 3.25 and 7/3 = 2.<u>3</u> and subtract which is 0.95 plus the fact that the three is repeated which gets your answer of 0.91<u>6</u> however you should say that if they want you to simplify it to two/three decimals, it is 0.95 but if they want it exact it is 0.91<u>6</u> with the six being repeated

7 0
3 years ago
Please I need help!
Monica [59]

Answer:

1)

\text{ Slope = -3}

2)

y+4=-\frac{7}{8}(x-7)

3)

y=-\frac{7}{8}x+\frac{17}{8}

Step-by-step explanation:

We want to write the equation of the line that passes through the points (7, -4) and (-1, 3) first in point-slope form and then in slope-intercept form.

1)

First and foremost, we will need to find the slope of the line. So, we can use the slope-formula:

m=\frac{y_2-y_1}{x_2-x_1}

Let (7, -4) be (x₁, y₁) and let (-1, 3) be (x₂, y₂). Substitute them into our slope formula. This yields:

m=\frac{3-(-4)}{-1-7}

Subtract. So, our slope is:

m=\frac{7}{-8}=-7/8

2)

Now, let's use the point-slope form:

y-y_1=m(x-x_1)

We will substitute -7/8 for our slope m. We will also use the point (7, -4) and this will be our (x₁, y₁). So, substituting these values yield:

y-(-4)=-\frac{7}{8}(x-7)

Simplify. So, our point-slope equation is:

y+4=-\frac{7}{8}(x-7)

3)

Finally, we want to convert this into slope-intercept form. So, let's solve for our y.

On the right, distribute:

y+4=-\frac{7}{8}x+\frac{49}{8}

Subtract 4 from both sides. Note that we can write 4 using a common denominator of 8, so 4 is 32/8. This yields:

y=-\frac{7}{8}x+\frac{49}{8}-\frac{32}{8}

Subtract. So, our slope-intercept equation is:

y=-\frac{7}{8}x+\frac{17}{8}

And we're done!

7 0
3 years ago
Read 2 more answers
Emery Mining Inc. recently reported $147,500 of sales, $75,500 of operating costs other than depreciation, and $10,200 of deprec
Molodets [167]

Answer:

net income is $48452.81

Step-by-step explanation:

Sales =$147500

subtract operating expenses

-$75500 =$72000

subtract non- operating costs

depreciation -$10200 =$61800

-interest expense payable (16500*7,23%)$1196.25=63603.75

from profit before tax deduct income taxes =63603.75*25%=15150.9375

Net Income is therefore $63603.75-$15150.9375 = $48452.81

6 0
3 years ago
Kaylee is decorating a ballroom ceiling with garland. If the rectangular ceiling is 20 meters by 48 meters, how much garland wil
Vitek1552 [10]

Answer:

960

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP
Viefleur [7K]
7x²=9+x
so
for
0=ax²+bx+c

x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}
so

7x²=9+x
mins 9 from both sides and minus x
7x²-1x-9=0
a=7
b=-1
c=-9


x=\frac{-(-1)+/-\sqrt{(-1)^2-4(7)(-9)}}{2(7)}
x=\frac{1+/-\sqrt{(-1)^2+4(7)(9)}}{2(7)}
so the 4th one
4 0
3 years ago
Other questions:
  • Clark is having a party at his house. His father has allowedhim to spend at most $20 on snack food. He’d like to but chips that
    14·1 answer
  • You help your dad build a dog house for your dog. You tell him that it would be easy to build a dog house in the shape of a tent
    10·1 answer
  • Номер 7 пожалуйсто-можно за 5мин
    10·1 answer
  • A football team receives a 5-yard penalty on one play and a 10-yard penalty on the next. Write a number sentence to represent th
    11·1 answer
  • Determine whether the pair of lines are parallel, perpendicular, or neither.
    13·2 answers
  • What is the ratio of 12 minute to 1 hour?​
    6·2 answers
  • 1. Brad spent $1,200 on a credit card this
    6·1 answer
  • Which polynomial is factored completely? g Superscript 5 Baseline minus g 4 g cubed + 18 g squared + 20 g 24 g squared minus 6 g
    14·1 answer
  • Help plz need help will make mi day if u help
    9·2 answers
  • What is the area of the polygon given below
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!