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jeyben [28]
3 years ago
10

Find the measure of the indicated angle to the nearest degree.

Mathematics
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan? = \frac{opposite}{adjacent} = \frac{18}{17} , then

? = tan^{-1} (\frac{18}{17} ) ≈ 47° ( to the nearest degree )

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Steven created the scatterplot and trend line below to model the relationship between the number of innings he pitched and the n
-Dominant- [34]

Answer:

The answer is C (7)

Step-by-step explanation:

The graph gives the equation Y=12x, so by doing 87/12 you get 7.25 which is closest to 7 giving you the answer.

5 0
3 years ago
Read 2 more answers
In doing so, you collect a random sample of 50 salespersons employed by his company, which is thought to be representative of sa
Deffense [45]

Answer:

z=\frac{0.36 -0.45}{\sqrt{\frac{0.45(1-0.45)}{50}}}=-1.279  

p_v =P(z

And we can use the following code to find it  "=NORM.DIST(-1.279,0,1,TRUE)"

Step-by-step explanation:

Assuming this complete problem: "The CEO of a software company is committed to expanding the proportion of highly qualified women in the organization's staff of salespersons. He believes that the proportion of women in similar sales positions across the country is less than 45%. Hoping to find support for his belief, he directs you to test

H0: p .45 vs H1: p < .45.

In doing so, you collect a random sample of 50 salespersons employed by his company, which is thought to be representative of sales staffs of competing organizations in the industry. The collected random sample of size 50 showed that only 18 were women.

Compute the p-value associated with this test. Place your answer, rounded to 4 decimal places, in the blank. For example, 0.3456 would be a legitimate entry."

1) Data given and notation

n=50 represent the random sample taken

X=18 represent the number of women in the sample selected

\hat p=\frac{18}{50}=0.36 estimated proportion of women in the sample

p_o=0.45 is the value that we want to test

\alpha represent the significance level

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

2) Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the proportion of women is less than 0.45:  

Null hypothesis:p\geq 0.45  

Alternative hypothesis:p < 0.45  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

3) Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.36 -0.45}{\sqrt{\frac{0.45(1-0.45)}{50}}}=-1.279  

4) Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The next step would be calculate the p value for this test.  

Since is a left tailed test the p value would be:  

p_v =P(z

And we can use the following code to find it  "=NORM.DIST(-1.279,0,1,TRUE)"

4 0
3 years ago
Help Me With These Please
Gwar [14]
Look up the formula to find the area of a trapezoid. Then do the math HINT: The formula is 

A= a+b/2 h
6 0
3 years ago
Alyssa and Anna bought three toy cars for their three cousins from the store online. The price for one car was $3.83. A shipping
Anit [1.1K]

Hey!


1 car is $3.83.

3 cars is $3.83 × 3


3.83 × 3 = 11.49


Shipping fee is $4.55. Add that to the price of the 3 cars


11.49 + 4.55 = 16.04


The girls share the cost equally. Divide by 2


16.04 ÷ 2 = 8.02


\framebox{Each girl pays \$8.02}



6 0
3 years ago
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If a = 3 and b = 2, what is the value of the expression 11 + a - b ?
Vadim26 [7]
Substitute the values of a and b into the expression:
11 + 3 - 2
Add first because of order of operations (perform addition and subtraction in the order of occurrence from left to right):
14 - 2
Subtract (same justification as above just with subtraction instead):
12
Hope this helps!
4 0
3 years ago
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