1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
eimsori [14]
2 years ago
7

A sample of 25 provided a sample mean x = 14 and a sample standard deviation s = 4.32.

Mathematics
1 answer:
lys-0071 [83]2 years ago
5 0

The value of the z test statistic will be 2.55.

<h3>What is the z test statistic?</h3>

The z test statistic is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The z test statistics is given as

z = (x – μ) / σ

Where μ is the mean, σ is the standard deviation, and x is the sample.

A sample of 25 provided a sample mean μ = 14 and a sample standard deviation σ = 4.32.

Then the value of the z test statistic will be

z = (x – μ) / σ

z = (25 - 14) / 4.32

z = 11 / 4.32

z = 2.546 ≈ 2.55

More about the z test statistic link is given below.

brainly.com/question/15016913

#SPJ1

You might be interested in
What is the surface area of the cube?(please and put your answer as a number without a unit.)
Vikentia [17]

Answer:

Step-by-step explanation:

Total surface area of cube = a^3

here , a = 11 cm

So surface area of the cube = a^3

= 11^3

=1331 cm^3

Hope this helps

Plz mark it as brainliest

5 0
3 years ago
Given the polynomial 2x3 18x2 − 18x − 162, what is the value of the constant 'k' in the factored form? 2x3 18x2 − 18x − 162 = 2(
oee [108]

The value of the constant 'k' in the factored form factorization the provided polynomial equation is 3.

<h3>What is polynomial equation?</h3>

Polynomial equations is the expression in which the highest power of the unknown variable is n (n is real number).

The factor of a polynomial is the terms in linear or equation form, which are when multiplied together, give the original polynomial equation as result.

The given polynomial equation in the problem is,

2x^3 +18x^2 - 18x - 162

The factor of the polynomial equation are given as,

2(x+ k)(x - k)(x +9)

First find out the factors to compare and find the value of k.The above equation has the unknown variable x and the highest power of this unknown variable is 3.

Take out the highest common factor 2, which can divide each term of the above equation (2, 18, -18, -162). Thus,

2(x+ k)(x - k)(x +9)=2(x^3 +9x^2 - 9x - 81)

Take out the highest common factor to make the groups as,

2(x+ k)(x - k)(x +9)=2(x^2( x+9) - 9(x + 9))\\2(x+ k)(x - k)(x +9)=2( x+9) (x^2 - 9)\\2(x+ k)(x - k)(x +9)=2( x+9) (x^2 - 3^2)

Use the property of difference of the square for the (x²-3²) term as,

2(x+ k)(x - k)(x +9)=2( x+9) (x+3)(x-3)\\2(x+ k)(x - k)(x +9)=2 (x+3)(x-3)( x+9)

On comparing the two equation, we get the value of k as 3. Thus, the value of the constant 'k' in the factored form factorization the provided polynomial equation is 3.

Learn more about factor of polynomial here;

brainly.com/question/24380382

7 0
2 years ago
Can someone please help me I really need help please help me please help me thank you
alekssr [168]

Answer:  None. The question asks about $4 per hour.

Step-by-step explanation:   The cost changes by $4 every 2 hours.

That is $2 per hour.

6 0
3 years ago
PLEASE HELP 50 POINTS!!
sergij07 [2.7K]

Answer:

This is not even 50 points?

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Find value of x such that the data set has a mean of 105: 99, 119, 106, 112; 108
Marizza181 [45]
I'm assuming that x is part of the data set, and, with x, the mean equals 105. To find the value of x, you must add all the data values together to get 544+x (you still don't know what x equals). Then put 544+x over how many days values there are, including x (there are 6). You should have 544+x/6. Now, as this is how you would calculate the mean if you knew what x was equal to, you must set it equal to the mean, since you know what it is (105). You should now have 544+x/6 = 105. You have your equation set up--now you just have to solve it. I would multiply by 6 on both sides to get rid of the 6 on the left side. You would then have 544+x = 630. I would finally subtract 544 from both sides to get x = 86. Your final answer is x = 86.
6 0
3 years ago
Other questions:
  • In a right triangle, the length of the hypotenuse is 20 inches and the length of one leg is 15 inches. What is the length of the
    6·1 answer
  • Write 10x10x10x10x10x10 as an exponent
    15·2 answers
  • How many fields will he have
    9·1 answer
  • This graph shows how the length of time a canoe is rented is related to the rental cost . What is the rate of change shown in th
    8·2 answers
  • Solve equation for indicated variable:<br><br> g= -2 x + 1 , for x
    13·2 answers
  • In 1980, the first cd's hit the music stores. that year at a local music store 5,000 cd's were sold. each year after that, cd sa
    11·2 answers
  • NEED HELP ASAP 100 POINTS!!!! A woman looks out a window of a building. She is 93 feet above the ground. Her line of sight makes
    10·1 answer
  • The diagram shows three points P, Q and R on horizontal ground.
    11·1 answer
  • Sam has saved 1400 cents from selling lemonade how many dollars does Sam have
    8·1 answer
  • A charity bingo game costs $2 per round and has a $13 entry fee for an adult. It costs $3 per round and a $10 entry fee for a ch
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!