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ss7ja [257]
2 years ago
14

A random sample of 11 university students produced the following data, where x is the minutes spent studying per day, and y is t

he first exam score (out of a maximum of 100 points). The data are presented below in the table of values.x y11 3913 5514 4317 4619 6922 7524 7725 7828 7731 9334 92What is the value of the intercept of the regression line, b, rounded to one decimal place?Provide your answer below:
Mathematics
1 answer:
SIZIF [17.4K]2 years ago
8 0

Answer:

16.373,16.4

Step-by-step explanation:

Given that a  random sample of 11 university students produced the following data, where x is the minutes spent studying per day, and y is the first exam score (out of a maximum of 100 points).

x y

11 39

13 55

14 43

17 46

19 69

22 75

24 77

25 78

28 77

31 93

34 92 Observations 11        

       

ANOVA        

df SS MS F Significance F    

Regression 1 3214.095153 3214.095153 69.46052448 1.59367E-05    

Residual 9 416.4503017 46.27225574      

Total 10 3630.545455      

       

Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

Intercept 16.37281677 6.48384963 2.525169105 0.0324919 1.705329914 31.04030362 1.705329914 31.04030362

x 2.369323595 0.28428592 8.33429808 1.59367E-05 1.726224167 3.012423023 1.726224167 3.012423023

We get regression line as y =2.369x+16.373

a) value of intercept = 16.373

b) 16.4

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Bingel [31]

Answer:

  44

Step-by-step explanation:

The absolute value symbols turn any negative inside of them to a positive, so your expression is ...

  2 + 4·3 +5·7 +1 -6

  = 2 +12 +35 +1 -6

  = 44

4 0
3 years ago
the population of woodstock, Ga is about 23,896 people,and the city encompasses 11.3 square miles. What is the population densit
aev [14]

The population density of Woodstock is 2114.7 people per square mile

Step-by-step explanation:

Population density is the number of people per square kilometer or per square mile

Given

Number of people = 23896

Area = 11.3 square miles

The population density is given by the formula:

Population\ density=\frac{Number of People}{Area}\\=\frac{23896}{11.3}\\=2114.69=>2114.7\ people\ per\ square\ mile

Hence,

The population density of Woodstock is 2114.7 people per square mile

Keywords: Population density, Area

Learn more about population density at:

  • brainly.com/question/2367554
  • brainly.com/question/2670657

#LearnwithBrainly

8 0
3 years ago
Write the interval {xl-3 &lt; x &lt; 5}<br> as an inequality and using interval<br> notation.
madam [21]

Step-by-step explanation:

\{x\ |\ -3

8 0
3 years ago
Help please!!! Pre-calculus
Anvisha [2.4K]

Answer:

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Step-by-step explanation:

P ( 3, - pi/3)

We can circle 2pi n around the circle and be back at the same polar coordinate

P ( 3, - pi/3 + 2 pi n)

or we can flip the radius to a negative and add pi to the theta

P ( -3, - pi/3 + pi)

Then we can circle 2pi n around the circle and be back at the same polar coordinate

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6 0
3 years ago
at the grocery store at the manager told Jake that they stocked the fresh fruit, with 9 apples for every 6 peaches at this ratio
Lana71 [14]

Answer:

divide the apples and peaches then multiply it by the ratio you get when you divide the two different fruits

Step-by-step explanation:

hope it helps

8 0
2 years ago
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