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
ruslelena [56]
3 years ago
7

In order to estimate the average time spent on the computer terminals per student, data were collected for a sample of 49 busine

ss students over a one week period. Assume the population standard deviation is 1.4 hours. The standard error of the mean is a 0.20 b 0.30 c 5 d 7
Mathematics
1 answer:
Fittoniya [83]3 years ago
5 0

Answer:

a 0.20

Step-by-step explanation:

The standard error of the mean can be calculated using the formula

SE=\frac{s}{\sqrt{N} } where

  • s is the population standard deviation of the time spend on the computer (1.4 hours)
  • N is the sample size of the data collected. (49)

Using the numbers SE=\frac{1.4}{\sqrt{49} } =0.20

You might be interested in
Will give brainliest find the slope.
Klio2033 [76]

Answer:

-1/10 for first one and -4/2 for second one

Step-by-step explanation:

lol can I have brainliest?

6 0
3 years ago
Read 2 more answers
Which graph shows a proportional relationship that passes through the point (2, 1)?
Inga [223]

Answer:

D is the correct answer

8 0
3 years ago
Read 2 more answers
Equation to find original price if sale price of $429 is a 34% discount
Burka [1]

Answer:

The original price is $650

Step-by-step explanation:

There's an actual algebra method for this, but this is my method because I find it way easier to remember.

Since the most you can discount out of an item is 100% (well, it's considered free then) let's subtract 100 - 34, which is 66.

Now, turn it into a decimal because it makes the numbers easier- 0.66.

Since when you're finding the discount of an original price, you multiply the original price by the discount- instead for finding the original price for a discounted item we divide $429 by 0.66 instead, since when you divide a number by another number that's under 1 the quotient is a larger number.

So, 429 ÷ 0.66 = 650.

Therefore, the original price of the $429 sale price for a 34% discount is $650.

7 0
3 years ago
In a purely monopolistic market with a demand curve P = -Q / 10 + 2000, to maximize profit the firm provides the application at
Rudiy27

Answer: hello your question lacks some data hence I will be making an assumption to help resolve the problem within the scope of the question

answer:

≈ 95 units ( output level )

Step-by-step explanation:

Given data :

P = 2000 - Q/10

TC = 2Q^2 + 10Q + 200 ( assumed value )

<u>The output level where a purely monopolistic market will maximize profit</u>

<u>at MR = MC </u>

P = 2000 - Q/10 ------ ( 1 )

PQ = 2000Q - Q^2 / 10 ( aka TR )

MR = d (TR ) / dQ = 2000 - 2Q/10 = 2000 - Q/5

TC = 2Q^2 + 10Q + 200 ---- ( 2 )

MC = d (TC) / dQ = 4Q + 10

equating MR = MC

2000 - Q/5 = 4Q + 10

2000 - 10 = 4Q + Q/5

1990 = 20Q + Q

∴ Q = 1990 / 21 = 94.76 ≈ 95 units ( output level )

7 0
3 years ago
Consider the parent function f(x) = x^2 and the transformed function f(x) =- 5(x - 4)^2 – 8. Identify the
madam [21]

Given:

The parent function is

f(x)=x^2

Consider the transformed function is g(x) instead of f(x) because both functions are different.

g(x)=-5(x-4)^2-8

Step-by-step explanation:

We have,

f(x)=x^2

g(x)=-5(x-4)^2-8

It can be written as

g(x)=-5f(x-4)-8            ...(i)

The translation is defined as

g(x)=kf(x+a)+b                .... (ii)

Where, k is stretch factor, a is horizontal shift and b is vertical shift.

If 0<|k|<1, then the graph compressed vertically by factor k and if |k|>1, then the graph stretch vertically by factor k.

If k is negative, then f(x) is reflected across the x-axis to get g(x).

If a>0, then the graph shifts a units left and if a<0, then the graph shifts a units right.

If b>0, then the graph shifts b units up and if b<0, then the graph shifts b units down.

On comparing (i) and (ii), we get

a=-4, f(x) shifts 4 units right.

b=-8, f(x) shifts 8 units down.

k=-5, it is negative so f(x) reflected across the x-axis.

|k|=|-5|=5>1, so f(x) stretched vertically by factor 5.

Therefore, the function f(x) reflected across the x-axis, stretched vertically by factor 5 and shifted 4 units right 8 units down to get g(x).

8 0
3 years ago
Other questions:
  • if a male has a WHR greater than 1, he is considered to be at high risk for cardiovascular problems. Calculate the WHR of a male
    8·1 answer
  • A school charges $6 per ticket to a dance. They spend $300 on music and decorations.The expression 6n-300 describes the amount o
    15·2 answers
  • What is 3.1 as a mixed fraction in simplest form
    5·2 answers
  • Rachel, Mario and Sanjit share some money in the ratios 4:3:9
    5·1 answer
  • Can you please help me out it’s complete the square
    10·2 answers
  • Destiny just received two separate gifts from her great-great-grandmother.
    9·1 answer
  • Realizar en cada caso un gráfico que cumpla con las siguientes características:
    7·1 answer
  • The surface area of the Arctic Ocean is approximately 315 square kilometers. The surface area of Lake Ontario is approximately
    5·1 answer
  • PLEASE HELP WILL GIVE BRIANLIEST!!! ​
    5·1 answer
  • WILL MARK BRANLIEST
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!