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Readme [11.4K]
3 years ago
10

The following probability model gives the distribution of student loan debt (in thousands of dollars) for the graduating

Mathematics
1 answer:
BaLLatris [955]3 years ago
7 0

Answer:

a

b

c

Step-by-step explanation:

just got this question on edge

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In a study of cell phone use and brain hemispheric​ dominance, an Internet survey was​ e-mailed to 2455 subjects randomly select
Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : \alpha=1-0.99=0.01

Number of subjects (n) = 2455

Number of surveys returned = 931

The probability of surveys get return will be :-

p=\dfrac{931}{2455}=0.379226069246\approx0.38

The confidence interval for proportion is given by :-

p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}

0.38\pm z_{0.005}\times\sqrt{\dfrac{0.38(1-0.38)}{2455}}\\\\=0.38\pm(2.576)0.0098\\\approx0.38\pm0.025=(0.355,0.405)

Hence, the 99​% confidence interval for the proportion of returned surveys : (0.355,0.405)

5 0
4 years ago
Lamar is saving money to buy a game. So far he has saved $20, which is four-fifths of the total cost of the game. How much does
Rina8888 [55]

Answer:$30

Step-by-step explanation:

i divided the fraction into 20 and the multiplied hope this helped!

3 0
3 years ago
What is the slope of line m?
yaroslaw [1]
y =\frac{y_2-y_1}{x_2-x_1} = \frac{6-0}{0-(-3)} = \frac{6}{0+3} = \frac{6}{3} = \boxed{\bf{2}}

The answer is B) 2.
7 0
3 years ago
Read 2 more answers
Write the equation in standard form y-4= -3(x-3)
Crazy boy [7]
Y - 4 = -3x + 9

y = -3x + 13

standard form: 3x + y = 13
3 0
3 years ago
Read 2 more answers
A gaming computer system and additional equipment was purchased for $2,000. The system and equipment depreciate in value by 10%
vampirchik [111]

The value of the car is $956.5938 after 7 years and this can be determined by using arithmetic operations.

Given :

  • A gaming computer system and additional equipment was purchased for $2,000.
  • The system and equipment depreciate in value by 10% each year.

The following steps can be used in order to determine the total number of years will the computer have a value of less than $1,000:

Step 1 - The 10% of $2000 is $200. So, the value of the car after 1 year is $1800.

Step 2 - The 10% of $1800 is $180. So, the value of the car after 2 years is $1620.

Step 3 - The 10% of $1620 is $162. So, the value of the car after 3 years is $1458.

Step 4 - The 10% of $1458 is $145.8. So, the value of the car after 4 years is $1312.2.

Step 5 - The 10% of $1312.2 is $131.22. So, the value of the car after 5 years is $1180.98.

Step 6 - The 10% of $1180.98 is $118.098. So, the value of the car after 6 years is $1062.882.

Step 7 - The 10% of $1062.882 is $106.2882. So, the value of the car after 7 years is $956.5938.

Therefore, the correct option is C).

For more information, refer to the link given below:

brainly.com/question/25834626

3 0
3 years ago
Read 2 more answers
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