All categories

3 years ago

I need help please?!!!!):

Mathematics

2 answers:

Daniel [21]3 years ago

8 0

Answer:

Step-by-step explanation:

The mean of a set of data: (n₁ + n₂ + n₃...)/n, where n₁,₂,₃... are numbers in the set, and n is the number of numbers.

Plug in: (1 + 5 + 5 + 7 + 3 + 3 + 4)/7

Add: 28/7

Divide: 4

Cerrena [4.2K]3 years ago

3 0

Answer:

Step-by-step explanation:

When finding the mean of a data set you add up all the numbers and divide it my how many numbers there is

1+5+5+7+3+3+4= 28

28 divided by 7 = 4

Mean of the set of data is 4

Hope this helps :)

if it does please mark brainliest :D

- A. Hazle <3

You might be interested in

SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school are given below

kvasek [131]

Answer:

The value of test statistics is 25.

Step-by-step explanation:

We are given below the SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school;

380, 520, 480, 510, 560, 630, 670, 490, 500, 550, 400, 350, 440, 490, 620, 660, 700, 730, 740, 560

Let $\sigma$ = population standard of the reading and writing section SAT score of the students in this school

So, Null Hypothesis, $H_0$ : $\sigma \leq$ 100 {means that the reading and writing section SAT score of the students in this school is lesser than or equal to 100}

Alternate Hypothesis, $H_A$ : $\sigma$ > 100 {means that the reading and writing section SAT score of the students in this school is higher than 100}

The test statistics that would be used here is One-sample Chi-square test statistics;

T.S. = $\frac{(n-1)s^{2} }{\sigma^{2} }$ ~ $\chi^{2} __n_-_1$

where, $s^{2}$ = sample variance = $\frac{\sum (X-\bar X)^{2} }{n-1}$ = 13135.8

n = sample of 11th-grade students = 20

So, the test statistics = $\frac{(20-1)\times 13135.8^{2} }{100^{2} }$

= 24.96 ≈ 25

Hence, the value of test statistics is 25.

5 0

4 years ago

Which system of inequalities is show below

weeeeeb [17]

the answer would be c

4 0

4 years ago

An extreme vehicle company buys off-roading 4-wheelers for $24,000. After a year, the 4-wheeler depreciates 8%. What is the amou

ycow [4]

Rewrite the percentage as a decimal:

8% = 8/100 = 0.08

Multiply the previous result by 24000:

24000*0.08 = $1920

3 0

1 year ago

What is the sum of the measures of the interior angles of a decagon?

Dafna11 [192]

Answer:

1,440 degrees (10 interior angles of 144 degrees)

Step-by-step explanation:

4 0

3 years ago

Which is the best first step and explanation for solving this system of equations? 3x+4y=12 3x=2y-8

Greeley [361]

Answer:

Since it is a simultaneous equation,

Using elimination method, Multiply equation 1 by the co efficient of x in equation 2 and multiply equation 2 by the co efficient of x in equation 1.

Step-by-step explanation:

For further explanation , Please contact me through the comment section.

6 0

3 years ago