2x - 5y = 20<br> y = x

An article in the San Jose Mercury News stated that students in the California state university system take 4.5 years, on averag

shtirl [24]

Answer: No, the data does not support the claim at 1% level as the mean time is no longer than 4.5 years.

Step-by-step explanation:

Since we have given that

n the California state university system take 4.5 years, on average, to finish their undergraduate degrees.

So, the hypothesis would be

$H_0:\mu=4.5\\\\H_a:\mu>4.5$

Mean = 5.1

Standard deviation = 1.2

n = 49

So, test statistic value would be

$z=\dfrac{\bar{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\z=\dfrac{4.5-5.1}{\dfrac{1.2}{\sqrt{49}}}\\\\z=\dfrac{-0.6}{0.17}\\\\z=-3.53$

At 1% level of significance, critical value is 2.58

Since 2.58>-3.53.

So, we will accept the null hypothesis.

Hence, No, the data does not support the claim at 1% level as the mean time is no longer than 4.5 years.

8 0

3 years ago

Ivan earns 8 dolllars each time he walks his neighboor's dog. He already walked the dog 5 times. How many more times does he nee

aev [14]

Answer:

he needs to walk the dog 6 more times then he can buy his game

Step-by-step explanation:

7 0

3 years ago

Wendell is curious how much space Jordan will have inside the doghouse to move around in. What is the volume of the doghouse?

miss Akunina [59]

Answer:

Da answer isssss in the step by step lol *

note: Each length with one mark (I) is 36 inches. Each length with two marks (II) is 18 inches. Each length with three marks (III) is 30 inches. Each end has a height (from the highest point to the lowest point) of 28 inches.

note 2: I might not be right but when I get my work checked ill fix the answer skip to the end for the answer

Step-by-step explanation:

Finding The Volume of The Rectangular Prism

step one: use the images to find the width, height, and length.

the width is 36 in

the height is 18 in

the length is 30 in

step two: multiply the width by height by length aka width*height*length.

So, the volume is 19440 square inches

Finding The Volume Of an Isosceles Triangular Prism

so let us say the slanted lines on the triangular prism are named (a) and the bottom line that completes the forward and back-facing triangle is named (b). (yall probably don't know what I'm talking about lol)

step one: finding the base by using the image the base is the bottom line (b)

base = 36 in

step two: find the height of the base triangle (use your big brain uwu also the height is in found in the images)

height = 10 in

step three: find the depth/height of the triangle (ik is cunfusing ;| )

depth/height = 36 in

step four: now do this confusion formula

(((b*h)/2)*triangle height

((36*10)/2)36 = 6480 square inches

Finishing THEM!!

6480 square inches + 19440 square inches = 25920 square inches.

Answer (25920 square inches)

7 0

2 years ago

Read 2 more answers

HELP RIGHT AWAY PLEASE!!!!!

GREYUIT [131]

Answer:

First box: 4

Second Box: 2.2

Third Box: 0.1

Step-by-step explanation:

The first box means the 1.0

The second box means 0.1

The third box means 0.01.

First Box: It is 4 because 1 green box equals 1.0, there are 4 green boxes, so 1 x 4 = 4.

Second Box: It is 2.2 because 1 red rectangle equals 0.1, there is 22 red rectangles, so 0.1 x 22 = 2.2.

Third Box: It is 0.1 because 1 blue square equals 0.01 and there are 10 blue squares, so 0.01 x 10 = 0.1.

Hope this helps!!

7 0

4 years ago

At a football game, a vender sold a combined total of 116 sodas and hotdogs. The number of soda's sold was three times the numbe

Likurg_2 [28]

Let s and h the number of sodas and hotdogs sold, respectively; therefore, according to the question, the two equations are

$\begin{gathered} s+h=116 \\ s=3h \end{gathered}$

Solving the system of equations,

$\begin{gathered} s=3h \\ \Rightarrow3h+h=116 \\ \Rightarrow4h=116 \\ \Rightarrow h=29 \\ and \\ \Rightarrow s=3*29=87 \end{gathered}$

Thus, the answer is 29 hotdogs and 87 sodas.

5 0

1 year ago

2x - 5y = 20 y = x - 7