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Oksi-84 [34.3K]
3 years ago
7

A student had taken 7 tests and received scores of 88, 73, 81, 83, 79, 73, and 97.

Mathematics
1 answer:
bixtya [17]3 years ago
5 0

Answer:

Average is 82

Step-by-step explanation:

88 + 73 + 81 + 83 + 79 + 73 + 97 = 574

Count of numbers = 7

574/7 = 82

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What is the y-intercept of the graph of the function f(x) = x2 + 3x + 5?
agasfer [191]

Answer:

(0,5)

Step-by-step explanation:

If you plug in 0 in all the variables of x, f(x)=0+0+5

We know that f(x) is y...so y=5, while x=0

7 0
3 years ago
The study of fluids​
Elenna [48]

Replace m with 46x10^4 in the equation and solve.

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Round to 636

The answer is A.

6 0
2 years ago
Suppose 12% of students are veterans. From a sample of 263 students, how unusual would it be to have less than 22 veterans?
kkurt [141]

Answer:

Yes, both np and n(1-p) are ≥ 10

Mean = 0.12 ; Standard deviation = 0.02004

Yes. There is a less than 5% chance of this happening by random variation. 0.034839

Step-by-step explanation:

Given that :

p = 12% = 0.12 ;

Sample size, n = 263

np = 263 * 0.12 = 31.56

n(1 - p) = 263(1 - 0.12) = 263 * 0.88 = 231.44

According to the central limit theorem, distribution of sample proportion approximately follow normal distribution with mean of p = 0.12 and standard deviation sqrt(p*(1 - p)/n) = sqrt (0.12 *0.88)/n = sqrt(0.0004015) = 0.02004

Z = (x - mean) / standard deviation

x = 22 / 263 = 0.08365

Z = (0.08365 - 0.12) / 0.02004

Z = −1.813872

Z = - 1.814

P(Z < −1.814) = 0.034839 (Z probability calculator)

Yes, it is unusual

0.034 < 0.05 (Hence, There is a less than 5% chance of this happening by random variation.

7 0
2 years ago
A vowel will be picked when a letter is randomly selected from the word math. HELP
Oksana_A [137]

Answer:

The answer is the letter A

5 0
3 years ago
Read 2 more answers
Is 2/x + y/4 = 3/2 linear?
Makovka662 [10]

Answer:

No

Step-by-step explanation:

6 0
3 years ago
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