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3 years ago

Need 24 26 28 and 30 dne, first correct will get brainiest

Mathematics

1 answer:

Galina-37 [17]3 years ago

3 0

Answer:

Many answers, look below :)

Step-by-step explanation:

24.

(x)=2x^5+6x^4

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In testing the hypothesis H 0 colon mu subscript D less or equal than 5 space v s. space H 1 colon mu subscript D greater than 5

malfutka [58]

Answer:

The null hypothesis failed to be rejected (P-value=0.014).

Step-by-step explanation:

This is a hypothesis test for the population mean.

The null and alternative hypothesis are:

$H_0: \mu=5\\\\H_a:\mu> 5$

The significance level is α=0.01.

The sample has a size n=20.

The sample mean is M=9.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=7.5.

The estimated standard error of the mean is computed using the formula:

$s_M=\dfrac{s}{\sqrt{n}}=\dfrac{7.5}{\sqrt{20}}=1.677$

Then, we can calculate the t-statistic as:

$t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{9-5}{1.677}=\dfrac{4}{1.677}=2.385$

The degrees of freedom for this sample size are:

$df=n-1=20-1=19$

This test is a right-tailed test, with 19 degrees of freedom and t=2.385, so the P-value for this test is calculated as (using a t-table):

$P-value=P(t>2.385)=0.014$

As the P-value (0.014) is bigger than the significance level (0.01), the effect is not significant.

The null hypothesis failed to be rejected.

3 0

3 years ago

Graph the function.<br> f(x)=3z-5<br> Use the Line tool and select two points to graph

mojhsa [17]

The plot of the graph is attached and points have been determined

The two among them are (5,-2) ,(15,4).

What is a Line Function ?

A line function is what can be written in the form of

y =mx +c

where m is the slope and c is the intercept on y axis.

The equation given here is y = (3/5)x -5

m = 3/5

c = -5

The plot of the graph is attached and points have been determined

The two among them are (5,-2) ,(15,4)

To know more about Line Function

brainly.com/question/13425362

#SPJ1

7 0

2 years ago

Four thrids times the sum of a number 8 is 24. what is the numver

guajiro [1.7K]

Answer:

The number is 10

Step-by-step explanation:

Let the number be x.

four thirds times = 4/3

According to the statement:

four thrids times the sum of a number and 8 is 24

4/3 *(x+8)= 24

Move 3 to the R.H.S and Multiply 4 with the parenthesis.

4x+32=24*3

4x+32=72

Move constant to the R.H.S

4x=72-32

4x=40

Divide both the terms by 4

4x/4=40/4

x=10

Therefore the number is 10....

4 0

4 years ago

Do ACT score reports come in the mail?

DerKrebs [107]

Answer: Yes

Step-by-step explanation:

They usually come in three months after you take the test. I think I got mine in the middle of May.

3 0

3 years ago

the function f(t)= 3,500(1.003)^t gives the value of a saving account t months after it was opened.How long will it take for the

Pavel [41]

Answer:

After 19 months,value in the account will reach $3700

Step-by-step explanation:

The value of a savings account f(t) in terms of t ( number of months since account opening) is given as $3,500(1.003)^{t}$

We need to determine the value of t when f(t)>=3700

Expressing it in equation form,

$3,500(1.003)^{t} >= 3700$

$=>(1.003)^{t} >= \frac{3700}{3500}$

$=>(1.003)^{t} >= 1.057$

Taking log of both sides,

$=>t * log(1.003) >= log(1.057)$

$=>t >= \frac{log(1.057)}{log(1.003)}$

$=>t >= 18.51$

So t = 19.

6 0

3 years ago