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
Olegator [25]
3 years ago
5

A survey of 600 randomly selected employees in Company X found that 150 of them completed web analytics training. If there were

980 employees in the company, what is the approximate number of employees who completed web analytics training?
Mathematics
1 answer:
Helga [31]3 years ago
8 0

Answer:

The approximate number of employees who completed web analytics training are 245 .

Step-by-step explanation:

Formula

Percentage = \frac{Part\ value\times 100}{Total\ value}

As given

A survey of 600 randomly selected employees in Company X found that 150 of them completed web analytics training.

Part value = 150

Total value = 600

Putting in the above formula

Percentage = \frac{150\times 100}{600}

Percentage = \frac{15000}{600}

Percentage = 25%

Thus this shows that 150 employees who completed web analytics training from 600 employees are 25% .

As given

If there were 980 employees in the company .

Total value = 980

Percentage = 25%

Putting all the values in the formula

25 = \frac{Part\ value\times 100}{980}

Part\ value= \frac{980\times 25}{100}

Part\ value= \frac{24500}{100}

Part value = 245

Therefore  the approximate number of employees who completed web analytics training are 245 .

You might be interested in
The number of nails in a 5 lb box is normally distributed with a mean of 325 nails and a standard deviation of 15 nails. suppose
saul85 [17]

Answer:

192

Step-by-step explanation:

Trust me :)

3 0
2 years ago
The value of Greta's rolls of coins is $121.00. If pennies and dimes come in rolls of 50 coins each, and nickels and quarters co
aksik [14]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
Help with this question please!!
notsponge [240]
18x can also be expressed as:

= 2x * (4+5)
= 2x * 9
= 18x

ANSWER: 2x * (4 + 5)

Hope this helps! :)
3 0
3 years ago
Read 2 more answers
Hey can you please help me posted picture of question
Ronch [10]
The formulas for conditional probability are:
P(A\cap B')=P(A)\cdot P(B'|A)
P(A\cap B')=P(B')\cdot P(A|B').
Since P(A\cap B')= \frac{1}{6} and p(B')= \frac{7}{18}, you have the equation \frac{1}{6} = \frac{7}{18} \cdot P(A|B').
Therefore, P(A|B')= \frac{1}{6} : \frac{7}{18} =\frac{1}{6} \cdot \frac{18}{7} = \frac{3}{7}.
Answer: The correct choice is D.


8 0
3 years ago
A company with a large fleet of cars wants to study the gasoline usage. They check the gasoline usage for 50 company trips chose
Nookie1986 [14]

Answer:

The 95% confidence interval is given by (25.71536 ;28.32464)

And if we need to round we can use the following excel code:

round(lower,2)

[1] 25.72

round(upper,2)

[1] 28.32

And the interval would be (25.72; 28.32)  

Step-by-step explanation:

Notation and definitions  

n=50 represent the sample size  

\bar X= 27.2 represent the sample mean  

s=5.83 represent the sample standard deviation  

m represent the margin of error  

Confidence =88% or 0.88

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Calculate the critical value tc  

In order to find the critical value is important to mention that we don't know about the population standard deviation, so on this case we need to use the t distribution. Since our interval is at 88% of confidence, our significance level would be given by \alpha=1-0.88=0.12 and \alpha/2 =0.06. The degrees of freedom are given by:  

df=n-1=50-1=49  

We can find the critical values in R using the following formulas:  

qt(0.06,49)

[1] -1.582366

qt(1-0.06,49)

[1] 1.582366

The critical value tc=\pm 1.582366  

Calculate the margin of error (m)  

The margin of error for the sample mean is given by this formula:  

m=t_c \frac{s}{\sqrt{n}}  

m=1.582366 \frac{5.83}{\sqrt{50}}=14.613  

With R we can do this:

m=1.582366*(5.83/sqrt(50))

m

[1] 1.304639

Calculate the confidence interval  

The interval for the mean is given by this formula:  

\bar X \pm t_{c} \frac{s}{\sqrt{n}}  

And calculating the limits we got:  

27.02 - 1.582366 \frac{5.83}{\sqrt{50}}=25.715  

27.02 + 1.582366 \frac{5.83}{\sqrt{50}}=28.325

Using R the code is:

lower=27.02-m;lower

[1] 25.71536

upper=27.02+m;upper

[1] 28.32464

The 95% confidence interval is given by (25.71536 ;28.32464)  

And if we need to round we can use the following excel code:

round(lower,2)

[1] 25.72

round(upper,2)

[1] 28.32

And the interval would be (25.72; 28.32)  

6 0
3 years ago
Other questions:
  • Line x has a slope of 3/4. The slope of a line parallel to x is 3/4 True or False
    6·1 answer
  • If you bought a stock last year for a price of $67, and it has risen 12% since then, how much is the stock worth now, to the nea
    8·1 answer
  • a truck is going to a village and stops to see four trucks. how many trucks are going to the village?
    9·1 answer
  • Several times a week, Chuck goes to the gym to run andswim. When running, heburns 35 calories per minute. When swimming,he burns
    14·1 answer
  • Evaluate if x = –14.6 and y = 2.5. –x – |y|
    5·1 answer
  • Help me please!!!!!!
    7·1 answer
  • Show how you got the answer.. It is NOT B... THIS IS URGENT ANSWER FAST PLZ
    9·1 answer
  • Write an equation of the line below.
    13·1 answer
  • I need help !!! Please
    5·2 answers
  • Instructions: Use a graphing calculator to approximate the zeros and vertex of the following quadratic functions. Round to one d
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!