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
wariber [46]
3 years ago
11

Jonathan, a college business student wants to study how many pages of notes fellow classmates took during a semester for a finan

ce class. Past data reveals that pages of notes for a finance college class has a mean of 95 , with standard deviation 25 pages. He plans to take a random sample of 30 such college students and will calculate the mean pages of notes they take to compare to the known pages of notes students take for a finance college class. For these values, the mean and standard deviation of the sampling distribution of sample means for a sample of size 30 are: μx¯=95 and σx¯=2530√=4.6. What is the probability that the sample mean for a sample of size 30 will be at least 99? You may use a calculator or the portion of the z-table given below.
Mathematics
1 answer:
Naya [18.7K]3 years ago
8 0

Answer:

I just woke up and broke my right knee

You might be interested in
Help me? shhhhh.....its for a test
Lena [83]

Answer:

1/5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Given the data points, (x, y) of a linear function: (2, 11), (4, 10), (6, 9), (12, 6), what is the function? What is the slope?
NeX [460]

Answer:

The function is y~=~12 ~-~ 0.5 \cdot x.

The slope is m=-0.5.

The y-intercept is b=12.

Step-by-step explanation:

Our aim is to calculate the values <em>m</em> (slope) and <em>b</em> (y-intercept) in the equation of a line :

y=mx+b

We have the following data:

\begin{array}{c|cccc}x&2&4&6&12\\y&11&10&9&6\end{array}

To find the line of best fit for the points given, you must:

Step 1: Find X\cdot Yand X\cdot X as it was done in the table below.

Step 2: Find the sum of every column:

\sum{X} = 24 ~,~ \sum{Y} = 36 ~,~ \sum{X \cdot Y} = 188 ~,~ \sum{X^2} = 200

Step 3: Use the following equations to find <em>b</em> and <em>m</em>:

\begin{aligned}        b &= \frac{\sum{Y} \cdot \sum{X^2} - \sum{X} \cdot \sum{XY} }{n \cdot \sum{X^2} - \left(\sum{X}\right)^2} =             \frac{ 36 \cdot 200 - 24 \cdot 188}{ 4 \cdot 200 - 24^2} \approx 12 \\ \\m &= \frac{ n \cdot \sum{XY} - \sum{X} \cdot \sum{Y}}{n \cdot \sum{X^2} - \left(\sum{X}\right)^2}        = \frac{ 4 \cdot 188 - 24 \cdot 36 }{ 4 \cdot 200 - \left( 24 \right)^2} \approx -0.5\end{aligned}

Step 4: Assemble the equation of a line

\begin{aligned} y~&=~b ~+~ m \cdot x \\y~&=~12 ~-~ 0.5 \cdot x\end{aligned}

The graph of the regression line is:

5 0
3 years ago
Plz show work <br> 2(x+5)=26
Zolol [24]

Answer:

x = 8

Step-by-step explanation:

Step 1: Write equation

2(x + 5) = 26

Step 2: Solve for <em>x</em>

<u>Distribute 2:</u> 2x + 10 = 26

<u>Subtract 10 on both sides:</u> 2x = 16

<u>Divide both sides by 2:</u> x = 8

8 0
3 years ago
Read 2 more answers
8) What is the common ratio for this sequence?
Naddika [18.5K]

Step-by-step explanation:

it will 2.5 this is right answer option D

6 0
3 years ago
Plsss hellppp I give brainliest but earn it
yaroslaw [1]

Answer:

3

Step-by-step explanation:

let the no of people who share the meal be x

each member paid $17

total cost of meal=$51

so ur equation is

$17x=$51

x=$51/$17(here $ and $ also gets cancel)

x=3

therefore three menber shared the meal.

Note:when  in multiplication when u transfers the number to other side it changes into mltiplication.For example

$17=$51

here $17 is multiplied with x and when we bring $17 to right hand side it divides $51.

7 0
3 years ago
Read 2 more answers
Other questions:
  • 25. Janelle drove 45 miles in 2 hours. Kenya<br> drove 30 miles in 1.5 hours. Who drove<br> faster?
    14·2 answers
  • The ordered pairs (2, 20) and (3, 40) are solutions to an exponential function. Write the equation for this function.
    6·1 answer
  • Lisa's penny bank is 1/10 full. After she adds 440 pennies, it is 3/5 full. How many pennies can Lisa's bank hold?
    14·1 answer
  • You insurance policy on your car costs $600 a year. If you total your vehicle, you insurance company will pay $25,000 towards a
    6·1 answer
  • Martin can travel 174 miles in 3 hours. At this rate, how far can he travel in 7 hours?
    15·2 answers
  • 8x+5 with an explanation
    10·2 answers
  • HELPPP!!!!!!!!!!!!!!!!! What’s the slope of line. (-6,19) (8,19)
    15·2 answers
  • Find the X-intercepts :<br> 0=2(x+2)^2-5
    6·1 answer
  • Use the diagram to the right to name the following.
    12·1 answer
  • If f(x) = 3x -8, find f(6)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!