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
deff fn [24]
2 years ago
10

What does 0.05 x 300 represent?

Mathematics
1 answer:
pshichka [43]2 years ago
8 0

Answer:

15

Step-by-step explanation:

You might be interested in
What is the difference in length between the longest meteor and the shortest meteor ​
Bumek [7]

Answer:

Please show the full problem

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Select the correct answer. Which triangles are congruent according to the SAS criterion? ​
beks73 [17]

Answer:

side angle side I think its ABC and LMN

6 0
3 years ago
Which of the following illustrates the truth value of the following conditional?
Ilya [14]
The answer to this would be FF -> T
7 0
3 years ago
Read 2 more answers
A researcher claims that the mean of the salaries of elementary school teachers is greater than the mean of the salaries of seco
Brut [27]

Answer:

t=\frac{(48250-45630)}{\sqrt{\frac{3900^2}{26}+\frac{5530^2}{24}}}}=1.921  

df=n_{A}+n_{B}-2=26+24-2=48

Since is a one sided test the p value would be:

p_v =P(t_{(48)}>1.921)=0.0303

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that the mean for elementary school teachers is significantly higher than the mean for secondary teachers at 5% of significance

Step-by-step explanation:

Data given and notation

\bar X_{A}=48250 represent the mean of elementary teachers

\bar X_{B}=45630 represent the mean for secondary teachers

s_{A}=3900 represent the sample standard deviation for elementary teacher

s_{B}=5530 represent the sample standard deviation for secondary teachers

n_{A}=26 sample size selected

n_{B}=24 sample size selected  

\alpha=0.05 represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

p_v represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean of the salaries of elementary school teachers is greater than the mean of the salaries of secondary school teachers, the system of hypothesis would be:

Null hypothesis:\mu_{A}-\mu_{B}\leq 0

Alternative hypothesis:\mu_{A}-\mu_{B}>0

We don't know the population deviations, so for this case is better apply a t test to compare means, and the statistic is given by:

t=\frac{(\bar X_{A}-\bar X_{B})}{\sqrt{\frac{s^2_{A}}{n_{A}}+\frac{s^2_{B}}{n_{B}}}} (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other".

Calculate the statistic

We can replace in formula (1) the info given like this:

t=\frac{(48250-45630)}{\sqrt{\frac{3900^2}{26}+\frac{5530^2}{24}}}}=1.921  

P-value

The first step is calculate the degrees of freedom, on this case:

df=n_{A}+n_{B}-2=26+24-2=48

Since is a one sided test the p value would be:

p_v =P(t_{(48)}>1.921)=0.0303

Conclusion

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that the mean for elementary school teachers is significantly higher than the mean for secondary teachers at 5% of significance

5 0
2 years ago
G=-4x-4, solve for x
Snowcat [4.5K]

Answer:

G = -4x - 4

x = -1

Step-by-step explanation:

step 1: flip your equation and turn G into zero

ex: -4x - 4 = 0

step 2: add 4 to both sides

ex: -4x - 4 + 4 = 0 + 4   (-4x = 4)

step 3: divide both sides by -4

ex: -4x/-4 = 4/-4   (x = -1)

step 4: plug -1 into x then solve to check your answer

ex: -4(-1) - 4 = 0

4 - 4 = 0

0 = 0 (when this says 0 = 0 then that means your answer is always true)

4 0
2 years ago
Other questions:
  • A deck of cards is randomly dealt by the computer during a game of spider solitaire. find the probability (as a reduced fraction
    12·1 answer
  • PLEASE HELP I'M BEGGING YOU!!!
    9·1 answer
  • Someone help me with all these questions
    8·1 answer
  • Suppose Theta is an angle in standard position whose terminal side lies in
    14·1 answer
  • Find sin(a) in the triangle? <br> A.)12/35<br> B.)12/37<br> C.)35/12<br> D.)35/37
    7·1 answer
  • The weight of an object on the moon varies directly with its weight on the earth. If an object weighing 95 lbs on the moon weigh
    8·1 answer
  • 2 . log m = log 36 kinda stuck
    11·1 answer
  • Geometry Question if someone can help please!
    11·1 answer
  • Help please will give brainest.
    11·1 answer
  • 3. How many 3 digit all even numbers can be formed from the digits 1, 2, 3, 4, 5, 6 if the digits can be repeated?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!