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
zhuklara [117]
3 years ago
7

Even though the population standard deviation is unknown, an investigator uses z rather than the more appropriate t to test a hy

pothesis at the .01 level of significance. In this situation the true level of significance of this test is
Mathematics
1 answer:
alexandr1967 [171]3 years ago
8 0

Answer:

The true true level of significance of this test is more than 0.01.

Step-by-step explanation:

No standard deviation and we are told that the investigator still used z rather than the more appropriate t - distribution.

This method of using the z-distribution when standard deviation is unknown will definitely result in a smaller critical value and this in turn simply means that the p-value will be smaller than what it should really be.

Thus, it means the critical value is getting closer to the mean value than the way it should be.

Therefore, means that for a given significance of 0.01 and using the z-distribution under this no standard deviation situation, the true true level of significance of this test is more than 0.01.

You might be interested in
(I’m marking brainliest) plzzz help me out!!!
larisa86 [58]

Answer:

14, 16, 18, 20

Step-by-step explanation:

4 0
3 years ago
Find the value of x and y.
RideAnS [48]

Answer:

x = 30

y = 2

Step-by-step explanation:

Please note: the value for x is correct only if this triangle is a right triangle.

This can be solved because 2(5y) = 20 and because if a triangle has all congruent angles then its side lengths are also congruent.

4 0
3 years ago
Find the length of the arc and express your answer as a fraction times pie
Elina [12.6K]

Solution:

Given a circle of center, A with radius, r (AB) = 6 units

Where, the area, A, of the shaded sector, ABC, is 9π

To find the length of the arc, firstly we will find the measure of the angle subtended by the sector.

To find the area, A, of a sector, the formula is

\begin{gathered} A=\frac{\theta}{360\degree}\times\pi r^2 \\ Where\text{ r}=AB=6\text{ units} \\ A=9\pi\text{ square units} \end{gathered}

Substitute the values of the variables into the formula above to find the angle, θ, subtended by the sector.

\begin{gathered} 9\pi=\frac{\theta}{360\degree}\times\pi\times6^2 \\ Crossmultiply \\ 9\pi\times360=36\pi\times\theta \\ 3240\pi=36\pi\theta \\ Divide\text{ both sides by 36}\pi \\ \frac{3240\pi}{36\pi}=\frac{36\pi\theta}{36\pi} \\ 90\degree=\theta \\ \theta=90\degree \end{gathered}

To find the length of the arc, s, the formula is

\begin{gathered} s=\frac{\theta}{360\degree}\times2\pi r \\ Where \\ \theta=90\degree \\ r=6\text{ units} \end{gathered}

Substitute the variables into the formula to find the length of an arc, s above

\begin{gathered} s=\frac{\theta}{360}\times2\pi r \\ s=\frac{90\degree}{360\degree}\times2\times\pi\times6 \\ s=\frac{12\pi}{4}=3\pi\text{ units} \\ s=3\pi\text{ units} \end{gathered}

Hence, the length of the arc, s, is 3π units.

4 0
1 year ago
I will give BRAINLIEST to whoever answers correctly first!!!
Tatiana [17]
$3.18

Explanation: I am a cashier hahaha
7 0
3 years ago
Read 2 more answers
Asap pleaseeeee Name a point that lies only on the y-axis?
maxonik [38]

Answer:

(0,1)

Step-by-step explanation:

hope this helps !

could u check out my recent question I asked no one has helped me and I'm stuck and I'm also kinda slow . pleaseee

5 0
3 years ago
Read 2 more answers
Other questions:
  • Use distributing property : (-11) x (-15) + (-11) x (-25) plzz answer fast
    8·1 answer
  • Hannah has a grid a squares that has 12 rows with 15 squares in each row.She colors 5 rows of 8 squares in the middle of the gri
    8·2 answers
  • Maria studied the traffic trends in India. She found that the number of cars on the road increases by 10% each year. If there we
    13·1 answer
  • Need help ASAP!
    14·1 answer
  • Find the average rate of change of the area of a circle with respect to its radius r as r changes from 3 to each
    12·1 answer
  • Please help ASAP you get 25 points and star answer
    10·1 answer
  • If x+3/3 = y+2/2 , then x/3=?
    13·1 answer
  • What is the 4th term of the expanded binomial (2x – 3y)^6
    14·1 answer
  • his portion of the dist Question: a. Explain why the number n is an irrational number. b. Will you ever be able to get the EXACT
    11·1 answer
  • What is 4/5-3/10=? because I don't know how to answer this :)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!