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
Kamila [148]
3 years ago
12

A firm employing 100 workers has an average absenteeism of 4%. on a given day what is the probability of no workers being absent

​
Mathematics
1 answer:
Serggg [28]3 years ago
3 0

Answer:

25

Step-by-step explanation:

You might be interested in
Which is a factor of 20 but not a multiple of 2
Delicious77 [7]
20|2 \\ 10|2 \\ 5 \ |5 \\ 1 \\\\\boxed{ 5} \  it's \ a \ multiple \ of \ 20 , \ but \ it's \ not \ a \ multiple \ of \ 2
7 0
2 years ago
Read 2 more answers
In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older
Viktor [21]

Answer:

p_v =P(t_{(63)}>2.5)=0.0075  

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 fail reject the null hypothesis, so we can conclude that the mean age is significantly higher than 45 years at 5% of significance.  

Step-by-step explanation:

1) Data given and notation  

\bar X=45 represent the mean height for the sample  

s=16 represent the sample standard deviation for the sample  

n=64 sample size  

\mu_o =40 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)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean age is higher than 40 years, the system of hypothesis would be:  

Null hypothesis:\mu \leq 40  

Alternative hypothesis:\mu > 40  

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".  

Calculate the statistic

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

t=\frac{45-40}{\frac{16}{\sqrt{64}}}=2.5    

P-value

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

df=n-1=64-1=63  

Since is a one right tailed test the p value would be:  

p_v =P(t_{(63)}>2.5)=0.0075  

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 fail reject the null hypothesis, so we can conclude that the mean age is significantly higher than 45 years at 5% of significance.  

6 0
3 years ago
I have to write my own word problem that can be translated into the equation x+4=10
koban [17]

Answer:

Gary had four cookies after Sally gave him her cookies he had ten. How many cookies did Sally give him?

7 0
2 years ago
Read 2 more answers
A school debate team has 4 girls and 6 boys. A total of 3 of the team members will be chosen to participate in the district deba
Varvara68 [4.7K]
The probability that 1 girl and 2 boys will be selected is given by:
P(1\ boy,\ 2\ girls)=\frac{4C1\times6C2}{10C3}=\frac{1}{2}
The correct answer choice is B. 1/2.
6 0
2 years ago
Read 2 more answers
What is 15 over 100 simplefird?
bulgar [2K]
15/ 100 
To simplify divide both by 5
15/100 / 5 = 3/20 
6 0
3 years ago
Other questions:
  • If 168 chocolate chips weigh 5 1/4 ounces. How many chocolate chips are in an ounce?
    11·2 answers
  • Ming is making cookies.To make 30 cookies, his recipe requires 3 eggs. Using this recipe, what is the total number of eggs he wi
    13·1 answer
  • Explain how you know the values of the digitsin the number 58
    11·1 answer
  • What is the solution to the equation -3d/a^2-2d-8 + 3/d-4 = -2/ d+2
    10·2 answers
  • 0.002 inches
    8·1 answer
  • Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    6·1 answer
  • What’s the volume of one cylinder?
    6·2 answers
  • Help Me Please! I will give you 5 stars if your answer is correct
    11·2 answers
  • Write the equation of a line that passes the point (-6,9)and is perpendicular to a line that passes through the points (-2,1) an
    15·1 answer
  • The triangle below has an exterior angle of 110 degrees. What is the value of angle x?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!