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
SOVA2 [1]
3 years ago
7

What is the mean of your data 341, 237, 143,185,248,403,374,451,84,267,178,258,284,465,224

Mathematics
1 answer:
weqwewe [10]3 years ago
6 0

Answer:

The mean for the given set of numbers is 276.133..... repeated

Step-by-step explanation:

To find this you must add the numbers up together and divide them by the amount of numbers there is.

You might be interested in
In order to ensure efficient usage of a server, it is necessary to estimate the mean number
juin [17]

Answer:

a. [36.19;39.21]

b. Reject the null hypothesis. The population mean of users that are connected at the same time is greater than 35.

Step-by-step explanation:

Hello!

Your study variable is,

X: "number of users of one server at a time"

The objective is to estimate the mean, for this, a sample of n=100 times was taken and the standard deviation S= 9.2 and the sample mean is X[bar]= 37.7 were calculated.

You need to study the population mean, for this you need your variable to have at least normal distribution. Since you don't have information about its distribution, but the sample is big enough (n≥30) you can apply the Central Limit Theorem and approximate the distribution of the sample mean X[bar] to normal:

X[bar]≈N(μ;σ²/n)

a. With this approximation, you can construct the 90% Confidence Interval using the approximate Z

[X[bar] ± Z_{1-\alpha /2} * S/√n]

Z_{1-\alpha /2} = Z_{0.95} = 1.64

[37.7± 1.64* 9.2/√100]

[36.19;39.21]

b. You need to test if the population mean is greater than 35 with a level of significance of 1%.

The hypothesis is:

H₀: μ ≤ 35

H₁: μ > 35

α: 0.01

This is a one-tailed test so you have only one critical level (right tail):

Z_{1\alpha } = Z_{0.99} = 2.33

This means that if the value of the calculated statistic is equal or greater than 2.33 you will reject the null Hypothesis.

If the value is less than 2.33 you will support the null hypothesis.

The statistic is:

Z=<u> X[bar] - μ </u>= <u> 37.7 - 35 </u> = 2.93

       S/√n           9.2/10

The value 2.93 > 2.33, so you reject the null hypothesis. This means that the population mean of users that are connected at the same time is greater than 35.

<u><em>Note: </em></u><em>To make the decision using the interval calculated on a), the hypothesis should have been two-tailed and the confidence and significance levels complementary.</em>

I hope it helps!

7 0
3 years ago
The sum of two consecutive integers is at least 185. what is the smaller of the two integers? enter your answer in the box.
ss7ja [257]
Let us assume the first integer to be = x
Then
The second integer will be = x + 1
The sum of the two consecutive integers =185
Then
x + x + 1 = 185
2x + 1 = 185
2x = 184
x = 92
From the above deduction, we can easily conclude that the smallest of the two integers is 92. I hope that the answer has helped you.
4 0
3 years ago
Read 2 more answers
Please help me with this. an explanation would be great as well
Ira Lisetskai [31]

Answer:

A

Step-by-step explanation:

test the constant 1/2 + (1/2)*(-3) = -2/2 = -1

6 0
3 years ago
Read 2 more answers
I need help ASAP. Will give Brainliest.
Volgvan

Answer:

4,5

Step-by-step explanation:

Your welcome! :)

Good Luck!

8 0
3 years ago
Read 2 more answers
Statistics Question. Use the Desmos graphing calculator to find the least-squares regression line for the dataset in the table:
Soloha48 [4]

Given:

The table of values.

To find:

The least-squares regression line for the data set in the table by using the desmos graphing calculator.

Solution:

The general form of least-squares regression line is:

\hat{y}=mx+b           ...(i)

Where, m is the slope and b is the y-intercept.

By using the desmos graphing calculator, we get

m\approx 2.55,b\approx -6.435

Substitute these values in (i).

\hat{y}=(2.55)x+(-6.435)

\hat{y}=2.55x-6.435

Therefore, the correct option is A.

8 0
2 years ago
Other questions:
  • A basic calculator costs four pounds. How much will sixty calculators cost?
    12·2 answers
  • If the length of segment ad is 10 and the length of segment ac is 4y - 40, what are the values for y, segment ac, and segment dc
    8·1 answer
  • 6.1 is 90% of what number
    13·1 answer
  • Water_____at 32 degrees F.<br><br> (Fill in the blank)
    8·2 answers
  • Least to greatest 0.6,4/5,0.75
    14·1 answer
  • Evelyn has a first name, 2 middle names, and a last name. In how many different ways could Evelyn arrange the initials of her na
    6·1 answer
  • A number written below and to the right of a chemical symbol in a formula is called a
    10·1 answer
  • There are twelve inches in one foot, creating the equation y = 12x. If a door
    8·1 answer
  • Name the quadrant or axis where the point (4.-6) is located.​
    12·1 answer
  • The number of wild flowers in a park triples every 5 months. The following expression represents the number of wild flowers in t
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!