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Anika [276]
3 years ago
15

Countries that add fluoride to water have higher cancer rates than countries that do not. The conclusion that fluoride causes ca

ncer is
A) not justifiable, because the correlation may be weak.

B)not justifiable, because there are other variables, such as age, to consider

C)justifiable, because there is an increase of cancer in more than one country

D) justifiable, because there is a complementary correlation between fluoride usage and cancer.
Mathematics
2 answers:
Tamiku [17]3 years ago
7 0
I think its....A)<span>not justifiable, because the correlation may be weak. 
</span>
hope this helps and please make the braily-est answer and rate 5* 

thanks

zhannawk [14.2K]3 years ago
6 0

Answer: yo the answer is B



Step-by-step explanation:


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Explain how you can round 25.691 to the greatest place.
nadezda [96]
You have to round it to the nearest hundreds
4 0
3 years ago
A two-factor research study has 2 levels of factor A and 3 levels of factor B with a separate sample of n = 5 subjects in each t
amid [387]

Answer:

option (b) df = 1, 24

Step-by-step explanation:

Data provided in the question:

levels of factor A, a = 2

levels of factor B, b = 3

Subjects in each Sample, s = 5

n = 5 × 3 × 2 = 30

Now

df for Factor A = a - 1

= 2 - 1

= 1

df for Factor B = b - 1

= 3 - 1

= 2

df for Interaction AB = ( a - 1 ) × ( b - 1 )

= 1  × 2

= 2

df for Total = n - 1

= 30 - 1

= 29

df for error = 29 - 5

= 24

Hence,

df values for the F-ratio evaluating the main effect of factor A is 1, 24

The correct answer is option (b) df = 1, 24

6 0
3 years ago
How many solutions can be found for the system of linear equations represented on the graph?
Anon25 [30]

Answer:

No Solution

Step-by-step explanation:

As the two lines have the identical slope (-1/2x), that means these two lines are parallel, and therefore they have no solution.

3 0
3 years ago
The manager of the motor pool wants to know if it costs more to maintain cars that are driven more often. Data are gathered on e
Liula [17]

Answer:

b. There's no statistically significant linear relationship between the number of miles driven and the maintenance cost

Step-by-step explanation:

The p-value for the slope estimate show us how strong is the certainty that there are a linear relationship between both variables. In this case, the p-value for the slopes shows if there is a significant relationship between the number of miles driven and the maintenance cost.

If we have a high p-value like 0.7 we can said that there is no certainty in the linear relationship. it means that there's no statistically significant linear relationship between the number of miles driven and the maintenance cost.

5 0
3 years ago
Rick Mendez bought stock for $5,000, using $2,500 of his own money and $2,500 borrowed from the broker. One month later, the sto
-BARSIC- [3]

Answer:

It is 6%

Explanation:

The stock that is bought by Rick Mendez: 5,000

Own money used to buy: 2,500

Borrowed money: 2,500

Interest on borrowed money : 30

Brokerage commissions: 300

The stock is sold after one month: 5,650

Now first calculate the net profit = Selling price of stock – cost price of stock – Interest on borrowing – commission

5,650-5,000-30-300=320

Now calculate the rate of return = Net profit / cost of stock

320/5,000=.06

.06 or 6%

6 0
3 years ago
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