All categories

3 years ago

Can anyone help? I will mark you as brainliest!

Mathematics

1 answer:

Rudik [331]3 years ago

3 0

Answer: Part A is - the highest frequency was 5

The total number of the frequency is 24

The range is 1

I gave you the best answer that I have. I did my best. Good luck! :)

Step-by-step explanation:

You might be interested in

The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0 (Think of these as

bija089 [108]

Answer:

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 70

Standard Deviation, σ = 3

Sample size, n = 36

Let the average score of all pro golfers follow a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(score of the 36 golfers was between 70 and 71)

$\text{Standard error of sampling} = \displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = \frac{1}{2}$

$P(70 \leq x \leq 71) = P(\displaystyle\frac{70 - 70}{\frac{3}{\sqrt{36}}} \leq z \leq \displaystyle\frac{71-70}{\frac{3}{\sqrt{36}}}) = P(0 \leq z \leq 2)\\\\= P(z \leq 2) - P(z \leq 0)\\= 0.977 - 0.500 = 0.477= 47.7\%$

$P(70 \leq x \leq 71) = 47.7\%$

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

8 0

4 years ago

Simplify 3 square root of 20/ square root of 5

7nadin3 [17]

-7√5

rewrite 20 as 2^2·5

factor 4 out of 20. negative ∛4(5)-√5

rewrite 4 and 2^2 negative ∛2^2·5-√5

pull terms out from under the radical

-3(2√5)√5

multiply 2 by -3

-6√5-√5

subtract √5 from -6√5

-7√5

the answer is -7√5

8 0

3 years ago

Please helpppppp meeee

yKpoI14uk [10]

Answer:

0.25 Converges

Step-by-step explanation:

First, we need to expand our series so that we get the following:

$\sum _{n=1}^{\infty \:}\frac{n}{4^n}+\frac{1}{4^{n+1}}$

We can then use the series ratio test on each term. (L < 1 = absolutely convergent)

$\sum _{n=1}^{\infty \:}\frac{n}{4^n}$

$\lim_{n \to \infty} \frac{n}{4^{n}\\}$ =

⇒ converges

$\sum _{n=1}^{\infty \:}\frac{1}{4^n^+1}$

$\lim_{n \to \infty} \frac{n}{4^{n}^+1\\}$

⇒ converges

converges + converges

= converges

~Hope this helps! Once again, sorry if my explanation is a bit confusing~

8 0

3 years ago

What is the value of x in the equation 4x - 5 = -33

aniked [119]

Answer: $x=-7$

Step-by-step explanation:

$4x-5 =-33$

ad 5 to both sides

$4x=-28$

divide both sides by 4

$x=-7$

plug in x to double check

$4(-7)-5=-33\\-28-5=-33\\-33=-33$

hope this helps :3

5 0

3 years ago

Which of these choices show a pair of equivalent expressions? Check all that apply.

Makovka662 [10]

Answer:

B, D

Step-by-step explanation:

In a rational exponent, the numerator becomes an exponent, and the denominator is the index of the root.

B is true.

D is true

8 0

4 years ago