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
TiliK225 [7]
3 years ago
15

What is the missing value?

Mathematics
1 answer:
zysi [14]3 years ago
3 0
5 hours is equals to 15mph, as you can see, if you multiply every step, is equals to 75, (75x1=75, 25x3=75, 20x3.75=75, etc.)
You might be interested in
Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation website, June 23, 2016). The sa
xxMikexx [17]

Answer:

\chi^2 = \frac{(32-42)^2}{42}+\frac{(18-8)^2}{8}+\frac{(68-63)^2}{63}+\frac{(7-12)^2}{12}+\frac{(89-84)^2}{84}+\frac{(11-16)^2}{16}=19.221

Now we can calculate the degrees of freedom for the statistic given by:

df=(rows-1)(cols-1)=(3-1)(2-1)=2

And we can calculate the p value given by:

p_v = P(\chi^2_{2} >19.221)=0.000067

And we can find the p value using the following excel code:

"=1-CHISQ.DIST(19.221,2,TRUE)"

Since the p values is higher than a significance level for example \alpha=0.05, we can reject the null hypothesis at 5% of significance, and we can conclude that the two variables are dependent at 5% of significance.

Step-by-step explanation:

Previous concepts

A chi-square goodness of fit test "determines if a sample data matches a population".

A chi-square test for independence "compares two variables in a contingency table to see if they are related. In a more general sense, it tests to see whether distributions of categorical variables differ from each another".

Solution to the problem

Assume the following dataset:

Size Company/ Heal. Ins.   Yes   No  Total

Small                                      32   18    50

Medium                                 68     7    75

Large                                     89    11    100

_____________________________________

Total                                     189    36   225

We need to conduct a chi square test in order to check the following hypothesis:

H0: independence between heath insurance coverage and size of the company

H1:  NO independence between heath insurance coverage and size of the company

The statistic to check the hypothesis is given by:

\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

The table given represent the observed values, we just need to calculate the expected values with the following formula E_i = \frac{total col * total row}{grand total}

And the calculations are given by:

E_{1} =\frac{50*189}{225}=42

E_{2} =\frac{50*36}{225}=8

E_{3} =\frac{75*189}{225}=63

E_{4} =\frac{75*36}{225}=12

E_{5} =\frac{100*189}{225}=84

E_{6} =\frac{100*36}{225}=16

And the expected values are given by:

Size Company/ Heal. Ins.   Yes   No  Total

Small                                      42    8    50

Medium                                 63     12    75

Large                                     84    16    100

_____________________________________

Total                                     189    36   225

And now we can calculate the statistic:

\chi^2 = \frac{(32-42)^2}{42}+\frac{(18-8)^2}{8}+\frac{(68-63)^2}{63}+\frac{(7-12)^2}{12}+\frac{(89-84)^2}{84}+\frac{(11-16)^2}{16}=19.221

Now we can calculate the degrees of freedom for the statistic given by:

df=(rows-1)(cols-1)=(3-1)(2-1)=2

And we can calculate the p value given by:

p_v = P(\chi^2_{2} >19.221)=0.000067

And we can find the p value using the following excel code:

"=1-CHISQ.DIST(19.221,2,TRUE)"

Since the p values is higher than a significance level for example \alpha=0.05, we can reject the null hypothesis at 5% of significance, and we can conclude that the two variables are dependent at 5% of significance.

3 0
3 years ago
Which sequence of transformations will result in similar, but not congruent, figures?
Rudik [331]

D.dilation changes the size is your answer. Hope this helps!

8 0
3 years ago
Read 2 more answers
What is 80,000,000 +4,000,000+100+8 in standard form
____ [38]
84,000,108 is in standard 

5 0
2 years ago
Read 2 more answers
What the median of 17, 24, 8, 19, 6, 34, 10, 28, 48, 12<br>​
BartSMP [9]

The median is 48 because it is the biggest number and the biggest number is the median
4 0
2 years ago
Question 8 (1 point)
creativ13 [48]
I believe x=3.
4x-3(-2)=18
4x=12
x=3
4 0
2 years ago
Other questions:
  • Denise likes 2 teaspoons of milk in every 8-ounce cup of coffee she drinks. How many teaspoons of milk does Denise like per ounc
    14·1 answer
  • Dillon words at the park every third day. William words at the park every fourth day. They both last worked together on a Thursd
    13·1 answer
  • You work for a landscape company that just got a contract to re-mulch a park. The area that needs mulching is 30 feet by 60 feet
    15·2 answers
  • What's four to the six power times four to the seventh power
    5·2 answers
  • 1,2,3 need help please show work
    10·2 answers
  • Find the area of the figure below by first finding the areas of the rectangle and triangle.
    12·1 answer
  • 7(x + 4) + 6(x-3) = 8 (x-3) -2(x+4)
    8·2 answers
  • Is g(x)=-2f(x)+4 a vertical shift?
    7·1 answer
  • See if you are cool enough to do the whole paper. i will give brainliest if correct
    9·1 answer
  • X/15 = 8<br> its a one step equation
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!