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]
4 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]4 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
Use mental math to solve the equation 1.60=0.04+s
kobusy [5.1K]
Well using mental math, subtract .04 from 1.6 to get 1.56, which is s
7 0
3 years ago
Read 2 more answers
Is the sum of two rational numbers always rational
Pepsi [2]

Answer:

in short, Yes they are always rational.

here's why...

E.g. suppose \frac{c}{d} and \frac{a}{b} are fractions, that means that a,b,c,d are all integers, and b and d are not zero. finding the sum the numerator, and denominator would also have to be integers. the denominator of the sum can't be zero since the denominators of the fractions were not zero, and would give \frac{ad+bc}{bd} and since they are bound by addition (sum means addition) they must also be rational since eit would equal a bigger integer than initially had

Step-by-step explanation:

8 0
2 years ago
Please help me I have been stuck on this question for ages
Finger [1]

Answer:28 green and 35 red

Step-by-step explanation:

Given

If there are r red counter and g green counter then

Probability of drawing a green counter is P(g)=\frac{4}{9}

and P(g)=\frac{\text{No of g counter}}{\text{Total no of counter}}

Thus \frac{\text{No of g counter}}{\text{Total no of counter}}=\frac{4}{9}

\frac{g}{g+r}=\frac{4}{9}

\Rightarrow 9g=4g+4r

\Rightarrow 5g=4r\quad \ldots(i)

Also if 4 red and 2 green counter is added the probability of drawing a green counter is

P(g)=\frac{10}{23}=\frac{\text{No of g counter}}{\text{Total no of counter}}

\Rightarrow \frac{10}{23}=\frac{g+2}{g+2+r+4}

\Rightarrow \frac{10}{23}=\frac{g+2}{g+r+6}

\Rightarrow 10g+10r+60=23g+46

\Rightarrow 10r+14=13g\ quad \ldots(ii)

Substitute the value of g in equation (ii)[/tex]

\Rightarrow 10\times \frac{5}{4}g+14=13g

\Rightarrow \frac{25}{2}g+14=13g

\Rightarrow g=28

Therefore r=35

Thus there 28 green counter and 35 red counter

6 0
3 years ago
F(x)=2x-1<br> g(x)=3<br> h(x)=x²+1<br><br> Compute the following:<br> Find f(3)
inn [45]
If f(x)=2x-1 just plug in the 3 where x is. So it would be 2(3)-1=5
6 0
3 years ago
A video rental store keeps a list of their top 15 movie rentals each week. This week the list includes 6 action, 4 comedies, 3 d
azamat

Answer:

<h2>32/1125</h2>

Step-by-step explanation:

Probability is the likelihood or chance that an event will occur.

Probability = Expected outcome of event/Total outcome.

If a video rental store keeps a list of their top 15 movie rentals each week, the total outcome is 15.

If the list for the week includes 6 action, 4 comedies, 3 dramas, and 2 mysteries and the store manager removes a copy of each of the 15 movies from the shelf, then randomly selects 3 of the 15 to show on the display monitors in the store, the probability that she selected 2 comedies and 1 action movie will be calculated as shown;

Probability of selecting 2 comedies  = 4/15*4/15 = 16/225 (Note that the expected outcome in this case is 4).

Probability of selecting 1 action movie = 6/15 = 2/5

<em>Hence, the probability that she selected 2 comedies and 1 action movie will be equivalent to 16/225*2/5 = 32/1125</em>

<em>Note that the rented movies will have to be returned hence reason for the replacement. </em>

8 0
3 years ago
Other questions:
  • The center of a circle lies on _____.
    11·1 answer
  • Bethany purchases a stereo for $750. She pays $100 down and pays for the rest using financing. She is charged a $5
    10·1 answer
  • The reciprocal of 11
    5·1 answer
  • Use this data in the problem below. Follow the steps carefully. Round to the nearest tenth. Lot 1: Week 1: 600 Week 2: 300 Week
    12·2 answers
  • Explain how u can mentally find the sum of the fractions in exercise 3 without actually performing the calculations.
    6·2 answers
  • 10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then
    9·1 answer
  • What constitutes a function
    5·1 answer
  • BRAINLIEST pls answer I really need help and this is a big grade
    6·1 answer
  • Given Point A (3,-4) and Point B (8,6) on directed line segment AB, what is the y-coordinate of Point F
    11·1 answer
  • Find the greatest common factor of the<br> following monomials:<br> 33c 27c^4
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!