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inysia [295]
3 years ago
12

To test upper h 0 : mu equals 72 versus upper h 1 : mu less than 72​, a simple random sample of size nequals20 is obtained from

a population that is known to be normally​ distributed, and the sample standard deviation is found to be 6. complete parts ​(a) and ​(b) below.
Mathematics
1 answer:
katen-ka-za [31]3 years ago
6 0
We solve using equation \beta   \sqrt{x}  \sqrt[n]{x}  \lim_{n \to \infty} a_n  \alpha⇔ ∈ ω. ㏒
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You save 15 a week. How much will you have saved after w weeks? Answer construct a verbal model
liraira [26]

Answer:

With every week you save, 15 more dollars are added into your savings.

Step-by-step explanation:

\left[\begin{array}{ccc}15(1)=15&15(2)=30&15(3)=45\\15(4)=60&15(5)=75&15(6)=90\\15(7)=105&15(8)=120&15(9)=135\end{array}\right]

3 0
3 years ago
You wish to make a triangular garden. One of the angles is 26°. The second angle is complementary to the first angle. What is th
rosijanka [135]
 Since the second angle + first angle is 90 degrees, the third angle must be 90 degrees to complete the 180 degrees in a circle.
Hope this helps!
8 0
3 years ago
Liam works in a toy store that sells bags of marbles. he put 10 marbles in each bag and 2/10 of the marbles are striped. if Liam
Ede4ka [16]
10 marbles in each bag...2/10 are striped...2/10(10) = 20/10 = 2 are striped.So in every bag of 10 marbles, 2 are striped. So if there is 3 bags of marbles....then (3 x 2) = 6 are striped. <== he needs 6 striped

7 0
3 years ago
Read 2 more answers
James used a substitution to solve this system of equations. Which equation could be a result of his first step? 2x+3y=12 y=x+1.
Blizzard [7]

Answer:

x = 1.5

y = 3

Step-by-step explanation:

to solve this system of equation using the substitution methods we say let

2x+3y=12................................... equation 1

y=x+1.5..................................... equation 2

substitute equation 2  into equation 1

2x+3y=12................................... equation 1

2x + 3( x + 1.5) = 12

2x + 3x + 4.5 = 12

5x + 4.5 = 12

collect the like terms

5x = 12 - 4.5

5x = 7.5

divide both sides by the coefficient of x which is 5

5x/5 = 7.5/5

x = 1.5

put x = 1.5 into equation 2

y=x+1.5..................................... equation 2

y = 1.5 + 1.5

y = 3

therefore the value of x = 1.5 and y = 3 respectively.

5 0
3 years ago
Solve each quadratic equation. (2x-1)(x+7)=1
Galina-37 [17]
So you foil out the problem and get
3 0
3 years ago
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