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
Yakvenalex [24]
2 years ago
15

Q4.

Mathematics
1 answer:
goblinko [34]2 years ago
3 0

The coding of the statistic is used to make it easier to work with the large sunshine data set

  • The mean of the sunshine is 3.05\overline 6
  • The standard deviation is approximately  <u>18.184</u>

<u />

Reason:

The given parameters are;

The sample size, n = 3.

∑x = 947

Sample corrected sum of squares, Sₓₓ = 33,065.37

The mean and standard deviation = Required

Solution:

Mean, \ \overline x = \dfrac{\sum x_i}{n}

The mean of the daily total sunshine is therefore;

Mean, \ \overline x = \dfrac{947}{30} \approx 31.5 \overline 6

s = \dfrac{x}{10 } - \dfrac{1}{10}

  • E(s) = \dfrac{Ex}{10 } - \dfrac{1}{10}

E(s) = \dfrac{31.5 \overline 6}{10 } - \dfrac{1}{10} = 3.05 \overline 6

  • The mean ≈ 3.05\overline 6

Alternatively

,The \ mean \  of \  the \  daily  \ total  \ sunshine,  \, s = \dfrac{31.5 \overline 6 - 1}{10 } = 3.05\overline 6

The mean of the daily total sunshine, \overline s ≈3.05\overline 6

  • Var(s) = Var \left(\dfrac{x}{10 } - \dfrac{1}{10} \right)

Var(s) = \left(\dfrac{1}{10}\right)^2 \times Var \left(x \right)

Therefore;

Var(s) = \left(\dfrac{1}{10}\right)^2 \times 33,065.37 = 330,6537

Therefore;

  • s = \sqrt{330.6537} \approx 18.184

The standard deviation, s_s ≈ <u>18.184</u>

Learn more about coding of statistic data here:

brainly.com/question/14837870

You might be interested in
jen wants to tile the floor of her kitchen. The floor is rectangular and measures 12 feet by 8 feet. if it costs $2.50 per squar
alexgriva [62]
Answer:

$240

Explanation:

12 × 8 = 96 _________ area in square feet

96 × 2.50 = 240 _________ in dollars

6 0
3 years ago
The owner of a music store received a shipment of 1,532 CDs. The CDS came in 37 boxes. The same number of CDS were in 36 of the
aleksandr82 [10.1K]
1532 ÷ 36 = 42 and remain 20.
So there were 20 CDS in the remains box
8 0
3 years ago
Mack the bug starts at (0,0) at noon and each minute moves one unit right or one unit up. He is trying to get to the point (5,7)
PSYCHO15rus [73]
<span>This is a very nice counting question. Suggestion / Hint: Count how many ways he can get from (0,0) to (5,7) by going through the point (2,3). Then subtract that from ALL POSSIBLE ways he can get from (0,0) to (5,7). Hint for the hint: How many ways he can get from (0,0) to (5,7) by going through the point (2,3)? Well, that's the SUM of how many ways he can get from (0,0) to (2,3) and how many ways he get get from (2,3) to (5,7). Hope this helps! :)</span>
4 0
3 years ago
Consider a study collecting data from a population with an unknown mean and standard deviation. If the sample mean and sample st
Levart [38]

Answer:

Step-by-step explanation:

Increasing the sample size in a particular study will bring about a decrease in the standard deviations of the means.

A decrease in the sample size for a particular study will bring about an increase in the standard deviations of the means.

Whereas the population mean of the distribution of sample means is the same as the population mean of the distribution being sampled from meaning that the population of the distribution of sample means never changes.

8 0
2 years ago
Find an area of a figure whose coordinates are A(-2, 2), B(2, 2), and D(-2, -2).
ivann1987 [24]
8 square units
A triangle
8 0
2 years ago
Other questions:
  • A rectangular page is to contain 24 square inches of print. The margins at the top and the bottom of page are to be 1.5 inches,
    5·1 answer
  • A stadium can seat 46,000 people for a baseball game. One day, 49,442 people attended a game. How many people had to stand becau
    6·1 answer
  • How can models help you rename a mixed number as an improper fraction of an improper fraction as a mixed mixed number?
    7·1 answer
  • Is 7 over 12 terminating or repeating
    7·1 answer
  • In a certain classroom, the ratio of boys to girls is 2 to 1. If there are 39 students in the classroom, how many are boys?
    12·1 answer
  • Adult tickets to a play cost $22. Tickets for children cost $15. Tickets for a group of 11 people cost $228. Write and solve a s
    7·1 answer
  • 32 oz = how many cups
    8·2 answers
  • You have 42 oz of egg noodles. You need 5 oz to make one serving of chicken noodle soup. How many servings can you
    12·1 answer
  • What is the distance formula?
    11·1 answer
  • A club held a car wash as fund-raiser.they charged $20 for trucks and $15 for cars.the club washed a total of 35 vehicles and ea
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!