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
Klio2033 [76]
3 years ago
13

Suppose we are testing the null hypothesis H 0 mu=20 and the alternative H iu =20 , normal population with sigma=6 A random samp

le of nine observations are drawn from the population, and we find the sample mean of these observations x = 17 The value of the test statistic z is approximatel
Mathematics
1 answer:
cupoosta [38]3 years ago
8 0

Answer:

The value of the test statistic is z = -1.5

Step-by-step explanation:

The formula for the test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the statistic, \mu is the mean, \sigma is the standard deviation and n is the number of observations.

In this problem, we have that:

\mu = 20, X = 17, \sigma = 6, n = 9

So

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{17 - 20}{\frac{6}{\sqrt{3}}}

z = -1.5

The value of the test statistic is z = -1.5

You might be interested in
What are the parallel sides of a trapezoid​
saul85 [17]

Answer:

Parallel means that the lines will never cross. If we look at a  traditional trapezoid, the top side and the bottom side are straight lines that will never cross one another. The left and right sides are slanted towards one another, to they are not parallel.

Hope this helped. : )

3 0
3 years ago
PLZ HELP FREE POINTS AND BRAINLEIST how can the direction part of a vector be expressed as a number
REY [17]

Answer:add an equation to the magnitude

Step-by-step explanation:

apply a given equation to find the magnitude

5 0
3 years ago
Read 2 more answers
Find the distance between the points (2,4) and (5,0). (PLEASE HELP!)
Inessa05 [86]

Answer:

5

Step-by-step explanation:

Calculate the distance d using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (2, 4) and (x₂, y₂ ) = (5, 0)

d = \sqrt{(5-2)^2+(0-4)^2}

  = \sqrt{3^2+(-4)^2}

  = \sqrt{9+16} = \sqrt{25} = 5

5 0
3 years ago
Read 2 more answers
Isabella decides to sell handmade stationery. She decides to sell 2 cards for $9. Which table below show the possible values of
sweet-ann [11.9K]

Answer:

G.

Step-by-step explanation:

cards = 2

dollars = 9

to check that the number of cards with the correct amount d;

use the ratio and proportion.

(3 x 18)/9 = 4

(4 x 31.5)/18 = 7

(7 x 45)/31.5 = 10

therefore, option G. table G. is the correct answer

try doing the ratio and proportion on the other table and the number of cards DO NOT match with the amount.  (see attached)

6 0
2 years ago
What is the interval in which this function is positive?
NeX [460]

Answer:

(-∞,∞)

Step-by-step explanation:

It is positive for all x

7 0
3 years ago
Other questions:
  • The sum of three consecutive even numbers is 66. What is the smallest of these numbers?
    9·1 answer
  • A local store sells oranges at a price of six for nine dollars Abby wants to send 24 oranges to her grandmother how much would y
    11·1 answer
  • Let r=.05 be the reserve rate. Which one of the following is the money multiplier?
    5·2 answers
  • 90 centimeters greater than 9 millimeters
    10·1 answer
  • Witch number is the product of 12.22 x 15.38
    5·2 answers
  • Obtain all zeros of x^4-7x^2+12, if two numbers of its zeros are √3 and -√3
    12·1 answer
  • Solve −2(n+3)−4=8 . The solution is n= .
    8·1 answer
  • Dinos diner charges 4$ for each sandwich. Carlas cafe charges 8$ for each sandwich write the total costs of 1 2 3 and 4 sandwich
    5·1 answer
  • 2y = x + 9<br> x + y = -3<br><br> 1) (-5,2)<br><br> 2) -5<br><br> 3) (2,-5)<br><br> 4) 2
    15·2 answers
  • Simplify 3 / 8 (–2 / 7 +(–3 / 8 ×2 / 5)​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!