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
Setler79 [48]
3 years ago
7

What is a multiple of 7 and is also a factor of 7

Mathematics
1 answer:
olga2289 [7]3 years ago
4 0
28 is a multiple of 7 and also a factor of seven!
You might be interested in
Ms.Gonzalez ordered prizes for her science classes. On Friday, Ms. Gonzalez had received 6 times as many prizes as she got on We
arsen [322]
I think Ms.Gonzalez got 217 prizes on Wednesday.All you had to do was divide 1,307 by 6.
4 0
2 years ago
Which number line best shows how to solve -2-(-4)
pantera1 [17]
Alright. -2-(-4) = -2 + 4 because a negative and a negative equals to a positive[(-2-(-4)]. It would look like: Put a dot on -2, then move your dot 4 units to the right, which is +2. 
6 0
3 years ago
Read 2 more answers
An algebraic equation is an equation that includes:
MrRissso [65]

Answer:

ç

Step-by-step explanation:

fufujphgfhjunkksbkbbdkdbkdldbdjdbdkdjjdkdmdljdbdivdjbdkd

5 0
3 years ago
Read 2 more answers
Help please! worth a lot of points! Screenshot included
vlada-n [284]

Answer:

x=44444444444444444444444444444444

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
The national mean annual salary for a school administrator is $90,00 a year (The Cincinnati Enquirer, April 7, 2012). A school o
timurjin [86]

Answer:

a) Null hypothesis:\mu = 90000  

Alternative hypothesis:\mu \neq 90000  

b) p_v =2*P(t_{(24)}  

c) 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, so we can conclude that the true mean for the salary differs from 9000 at 5% of significance.

Step-by-step explanation:

1) Data given and notation  

77600 ,76000 ,90700 ,97200 ,90700 ,101800 ,78700 ,81300 ,84200 ,97600 ,

77500 ,75700 ,89400 ,84300 ,78700 ,84600 ,87700 ,103400 ,83800 ,101300

94700 ,69200 ,95400 ,61500 ,68800

We can calculate the sample mean and deviation with the following formulas:

\bar X =\frac{\sum_{i=1}^n X_i}{n}

s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

The values obtained are:

\bar X=85272 represent the mean annual salary for the sample  

s=11039.23 represent the sample standard deviation for the sample  

n=25 sample size  

\mu_o =90000 represent the value that we want to test

\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)  

Part a: State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean salary differs from 90000, the system of hypothesis would be:  

Null hypothesis:\mu = 90000  

Alternative hypothesis:\mu \neq 90000  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-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".  

Part b: Calculate the statistic

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

t=\frac{85272-90000}{\frac{11039.23}{\sqrt{25}}}=-2.141    

P-value

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

df=n-1=25-1=24  

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

p_v =2*P(t_{(24)}  

Part c: 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, so we can conclude that the true mean for the salary differs from 9000 at 5% of significance.

6 0
3 years ago
Other questions:
  • Brainlist! I NEED THIS RIGHT NOE PLEASE. What is the domain of this graph?
    6·2 answers
  • A skate that normally costs $72.80 is on sale for 0.75 of the cost.What is the discount?
    10·1 answer
  • Which of the following statements are true? Select all that apply.
    5·2 answers
  • In the figure shown below, what fractional part of the circle is shaded?
    8·1 answer
  • Change to a fraction or mixed number in simplest form.<br> 66 2/3% = _____.
    9·2 answers
  • F(x)=(x-2)(x+4) what is the y-intercept and x-intercept
    15·1 answer
  • 5a - 3 + 2a + 2a + 3
    13·2 answers
  • A linear function models the height of a burning candle. Candle A comes out of the mold at 211 ​mm and is expected to be at 187
    5·1 answer
  • Triangle Similarity
    6·1 answer
  • Using diagonals from a common vertex, how many triangles could be formed from a<br> 24-gon?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!