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Lemur [1.5K]
3 years ago
8

Solve i give 28 point​

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
5 0

the number is how many years

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A researcher wants to test the hypothesis that the mean rating of guilt will be higher for unattractive defendants than for attr
ioda

The appropriate statistical test for whether the mean rating of guilts are greater for unattractive defendants than for attractive is:

B. 1 tailed t-test.

<h3>What are the hypothesis test?</h3>

At the null hypothesis, it is tested if the mean rating of guilt will not be higher for unattractive defendants than for attractive defendants, that is:

H_0: \mu_U \leq \mu_A

At the alternative hypothesis, it is tested if the rating is greater, that is:

H_1: \mu_U > \mu_A

We are comparing the means, hence a t-test is used. We are testing if one is greater than other(not different), hence a 1-tailed test is used, and option B is correct.

More can be learned about hypothesis tests at brainly.com/question/13873630

#SPJ1

5 0
2 years ago
-3/8+4/9 in a fraction
Andre45 [30]

- 3/8 + 4/9

= LCM = 72

= - 3 * 9/ 8 * 9 = -27/ 72

= 4 * 8 / 9 * 8 = 32 / 72

= (-27 + 32)/ 72

= 5/72

5 0
3 years ago
Read 2 more answers
Draw an area model that demonstrates that the quotient of 2080 and 40 is 52.
Scrat [10]

Area model is used to illustrate multiplication and division operations.

See attachment for the area model

The equation can be represented as:

\frac{2080}{40} = 52

Express 2080 as 1200 + 800 + 80

\frac{1200 + 800 + 80}{40}=52

Express as

\frac{1200 + 800 + 80}{40}=\frac{1200}{40} + \frac{800}{40} + \frac{80}{40}

Divide

\frac{1200 + 800 + 80}{40}= 30 + 20 + 2

See attachment for the area model

Read more about area models at:

brainly.com/question/18533236

7 0
2 years ago
Akira and a business associate agree to invest in a project estimated to cost $1.8 million (1,800,000). They decide to split the
MariettaO [177]
If it's relationship Akira : Business A. = 7:5 

The part of Akira is 7k

and the part of the Business A. is 5k

Then

7k+5k=12k => 12k=1,800,000 => k= 1,800,00/12=150,000$

Akira part is 7k= 7 * 150,000 = 1,050,000$

Good luck!!!!
8 0
3 years ago
After riding her bike for 20 miles. Angela got off and walked her bike the rest of the way at 5 miles per hour. If the total tri
mylen [45]

Answer:

She rode her bike 20 miles... I believe this may be a trick question.

Step-by-step explanation:

Let's break down this problem...

If she is going at a rate of 5 miles per hour while walking than the maximum she could have walked in 5 hours is 25 miles.

If Angela rode her bike for 20 miles, and the got off her bike and walked "<em>the rest of the way</em>" then she should have walked 50 miles. However as we already know her rate is 5 miles per hour while walking, and therefore could only have covered half that distance in 5 hours.

Is this a multiple choice question? Is there any misssing informaation?

7 0
3 years ago
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