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3 years ago

In a normal distribution, 95% of the data fall within how many standard

Mathematics

2 answers:

Vitek1552 [10]3 years ago

7 0

Answer: two standard deviations

Step-by-step explanation:

A P E X

Alexxandr [17]3 years ago

7 0

Answer:

O A. Two standard deviations

Step-by-step explanation:

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for a class of 24,78% of students got a B or better on the tex How many students is this? Round to a wholenumber

natita [175]

Step 1

Use the ratio of the number to the percentage to get the required answer.

$\frac{Total\text{ number of students}}{\text{The required number of students}}=\frac{Total\text{ percentage of the class}}{\text{Given percentage}}$

Where,

$\begin{gathered} \text{The total number of students = 24} \\ \text{The required number }of\text{ students= x} \\ \text{The total percentage of the class = 100} \\ \text{Given percentage = 78} \end{gathered}$

Step 2

Get the required answer

$\begin{gathered} \frac{24}{x}=\frac{100}{78} \\ 100x=24\times78 \\ 100x=1872 \\ \frac{100x}{100}=\frac{1872}{100} \\ x=\text{ 18.72} \\ \text{Hence} \\ x\approx19students\text{ rounded to a whole number } \end{gathered}$

The number of students that got B or a better grade on the test = 19 students rounded to a whole number.

4 0

11 months ago

The product of twice a number and six is the same as the difference of eleven times the number and 6/5 . Find the number

Rom4ik [11]

Answer:

-6/5

Step-by-step explanation:

solution;

let,the number be x,

product of twice of x and six = the difference

difference of eleven times x and 6/5

or, (2x×6)=(11×x)-(6/5)

or, 12x = 11x - 6/5

or, 12x - 11x = -6/5

therefore,x =-6/5

Therefore, the number required is (-6/5) whose product of twice a number and six is the same as the difference of eleven times the number and 6/5 .

3 0

3 years ago

Solve for p in the literal equation 4p + 7r = 4. P =

kiruha [24]

Answer:

p= 1-7r/4

hope this helps

5 0

3 years ago

Write an algebraic expression, equation, or inequality for each (don’t solve): a) twelve more than 8 times a number b) the diffe

dalvyx [7]

Answer:

A. 12 + 8x

B. x - 6 < 72

C. x - 5 = 2/3x

D. 2x : 14 or 2x/14

E. -9x + 3y - 3/2

Step-by-step explanation:

8 0

3 years ago

Help needed ASAP will give BRAINLIEST AND 5 STARS NOT A REAL TETS

arsen [322]

Answer:

I think it's 1.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers