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salantis [7]
3 years ago
10

. Formulate the hypotheses that can be used to determine whether the sample data support the hypothesis that students show a hig

her population mean math score on the SAT if their parents attained a higher level of education. population mean math score parents college grads. population mean math score parents high school grads. _____ _____ b. What is the point estimate of the difference between the means for the two populations
Mathematics
1 answer:
Vikki [24]3 years ago
4 0

Answer:

Following are the responses to the given question:

Step-by-step explanation:

For point a:

Following are the null and alternative hypotheses:

H_0 : \mu_1 \leq \mu_2\\\\H_1 : \mu_1 > \mu_2

For point b:

By using the Excel we obtained the output of the 2 sample t-test that is defined in the attached file.  

These point estimately are the difference among the mean for the two populations:

\to \mu_{\bar{x_1}-\bar{x_2}} =  \mu_{\bar{x_1}}-\mu{\bar{x_2}} ={\bar{x_1}-\bar{x_2}}=573-491=82

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What is the growth or decay and the percentage rate of Y=23(0.292)^x
torisob [31]

Answer:

So the decay percentage rate is of 70.8%

Step-by-step explanation:

An exponentil function has the following format:

y = ca^{x}

In which c is a constant.

If a>1, we have that a = 1 + r and r is the growth rate.

If a<1, we have that a = 1 - r and r is the decay rate.

In this problem:

a = 0.292

A is lesser than 1, so r is the decay rate.

1 - r = 0.292

r = 1 - 0.292

r = 0.708

So the decay percentage rate is of 70.8%

5 0
3 years ago
PLEASE HELP ASAP!
Mamont248 [21]

Answer:

(x-4)^2+(y+7)^2=43

Step-by-step explanation:

The standard equation of a circle is given by:

(x-h)^2+(y-k)^2=r^2

Where (<em>h, k</em>) is the center and <em>r</em> is the radius.

We are given that the center is (4, -7) and that the radius is √(43).

So, <em>h</em> = 4, <em>k</em> = -7, and <em>r</em> = √(43). Substitute:

(x-(4))^2+(y-(-7))^2=(\sqrt{43})^2

Simplify. Hence, our equation is:

(x-4)^2+(y+7)^2=43

7 0
3 years ago
Convert 3/4 to decimal leaving the answer in 1S.f​
GuDViN [60]

Answer:

0.8

Step-by-step explanation:

3/4 =0.75

~0.8(to 1s.f)

3 0
3 years ago
The parallelogram shown below has an area of 54 units squared
Lelechka [254]

Answer:

the height is 6 units

Step-by-step explanation:

Given that

The area of the parallelogram is 54 units squared

The base is 9 units

We need to find out the height

As we know that

The area of the parallelogram = Base × height

54 =  9 × height

So, the height is

= 54 ÷ 9

= 6 units

Hence, the height is 6 units

7 0
3 years ago
7034 x 10^9 in standard notation
fgiga [73]

Answer:

= 7034000000000

(real number)

= 7.034 × 1012

(scientific notation)

= 7.034e12

(scientific e notation)

= 7.034 × 1012

(engineering notation)

(trillion; prefix tera- (T))

= 7034000000000

(real number)

Step-by-step explanation:

Convert Scientific Notation to a Real Number

Multiply the decimal number by 10 raised to the power indicated.

Examples:

3.456 x 10^4 = 3.456 x 10,000 = 34560

3.456 x 10^-4 = 3.456 x .0001 = 0.0003456

5 0
3 years ago
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