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8090 [49]
3 years ago
13

Suppose you wish to perform a hypothesis test for a population mean. suppose that the population standard diviation is unknown,

the population is skwed to the right and the sample is large. woudl you perform a z test or a t test
Mathematics
1 answer:
Elenna [48]3 years ago
7 0
You would Perform a z test
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A cable company charges $70 per month for cable service to existing customers
Pachacha [2.7K]

Answer:

70x=y

70 per month=y, the cost

8 0
3 years ago
The main tank at an aquarium is a cylinder with a diameter of 203 ft and a height of 25 ft. Find the volume of the tank to the n
emmasim [6.3K]
In order to find the volume of the tank, you just need to use this formula :

V = π r^2 h

r = 101.5 ft (half the diameter)
h = 25 ft

V = π (101.5)^2 x 25

=  809462.5 ft^3

hope this helps
5 0
4 years ago
7b + 3 – 4b = 3 – 3(b + 4)
svlad2 [7]

Hello from MrBillDoesMath!

Answer:  b

Discussion:

7b + 3 - 4b = 3 - 3(b+4)  =>

7b + 3 - 4b = 3 - 3b -12 =>

(7b - 4b) + 3   = -3b - 9 =>

3b + 3 = -3b -9    =>      Add 9 to both sides

3b + 12 = -3b -9 + 9  =>

3b + 12 = -3b  =>         ( add 3b to both sides)

6b + 12 = 0 =>             (subtract 12 from both sides)

6b = -12 =>

b = -12/6 = -2


Thank you,

MrB


7 0
3 years ago
Plz, help me with this question!
Hatshy [7]

Answer:

A. 24

Step-by-step explanation:

Angles in a triangle add up to equal 180

Thus, 66 + 90 + x = 180

66 + 90 = 156

156 + x = 180

180 - 156 = 24

Hence, x = 24

Note: There is a right angle indicated by the square inside of the triangle. A right angle has a measure of 90 degrees. So Just in case you were wondering that's where the 90 cam from

5 0
3 years ago
Read 2 more answers
How do you work out 18 divided by minus 3
Artemon [7]
First, you divide 18 by 3. When you have the quotient, you recall that the two original numbers had opposite signs, and so you label the answer negative.
7 0
3 years ago
Read 2 more answers
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