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Alex17521 [72]
2 years ago
5

Suppose a data set of 350 observations (N 350) was analyzed using OLS to examine the factors that influence the salaries of prof

essional baseball players. The regression results are as follows, with standard errors in parentheses:
log(salary) = 10.1+ 0.05 years+0.03 gamesyr+0.0008 bavg+0.03 hrunsyr +0.02 rbisyr
(0.01) (0.029) (0.005) (0.003) (0.03) (0.02)
where,
salary = total salary in 2003
years = years in the league
bavg = career batting average
gamesyr = average games played per year
hrunsyr = home runs per year
rbisyr = runs batted in per year

R² = 0.562
SSR = 228.79

Suppose you would like to test the null hypothesis that career batting average, home runs per year, and runs batted in per year have no effect on the salaries of baseball players, once the effects of years of experience and games played per year have been controlled for.
This null hypothesis includes which of the following exclusion restrictions? Check all that apply.

a) β5=0
b) β3=0
c) β1=0
d) β4=0
e) β2=0
f) βo=0

To test the null hypothesis, you estimate the following restricted model:

log(salary) = 10.2 + 0.06 years + 0.037 gamesyr
(0.23) (0.03) (0.003)
where
SSR (restricted) = 232.11
R² (restricted) = 0.556
Since the unrestricted model ________ has degrees of freedom, while the restricted model has ________ degrees of freedom, you know that the number of exclusion restrictions must be q = ________ .

Suppose you would like to test your original null hypothesis using an F-test at the 99% level.
Note: The critical value for the F statistic with this number of exclusion restrictions, with greater than 120 observations, at the 99% level, is 3.78. null hypothesis.
After calculating the F-statistic and comparing it to the critical value, you ________ the null hypothesis.

a) reject
b) fail to reject
Mathematics
1 answer:
SSSSS [86.1K]2 years ago
4 0

Answer:

Step-by-step explanation:

True

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yulyashka [42]
Volume of Solid = Volume of Cylinder + Volume of Cone
Volume of Cylinder = πr²h
v= 3.14 * (3)² * 6
v = 169.56

Volume of Cone = πr² h/3
v = 3.14 * (3)² * 4/3
v = 37.7

Now, V = 169.56 + 37.7 = 207.26 cm³

Hope this helps!
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3 years ago
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n a group of 40 people, 10 people are healthy. The 30 unhealthy people have either high blood pressure, high cholesterol, or bot
aalyn [17]

Answer:

If a person is randomly selected from this group, the probability that they have both high blood pressure and high cholesterol is P=0.25.

Step-by-step explanation:

We can calculate the number of people from the sample that has both high blood pressure (HBP) and high cholesterol (HC) using this identity:

N(\text{HBP or HC})=N(\text{HBP})+N(\text{HC})-N(\text{HBP and HC})\\\\\\ N(\text{HBP and HC})=N(\text{HBP})+N(\text{HC})-N(\text{HBP or HC})\\\\\\ N(\text{HBP and HC})=15+25-30=10

We can calculate the probability that a random person has both high blood pressure and high cholesterol as:

P(\text{HBP and HC})=\dfrac{10}{40}=0.25

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Need someone’s help please??
kodGreya [7K]

Answer:

162

Step-by-step explanation:

18 times 9 = 162

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Suppose a 50-foot ladder is leaning against a wall. Which statements about the base of the ladder are true?
Liula [17]

Answer and Step-by-step explanation:

These are the statements that make the question complete:

A. If the base is 24 feet from the wall, the ladder reaches 45 feet up the wall.

B. If the base is 30 feet from the wall, the ladder reaches 40 feet up the wall.

C. If the base is 27 feet from the wall, the ladder reaches 44 feet up the wall.

D. If the base is 14 feet from the wall, the ladder reaches 48 feet up the wall.

Since the ladder leans against a wall, a right angle triangle is formed. Since the ladder is now slant, then it's length becomes the hypothenuse.

The correct statements can be gotten through Pythagoras theorem which says:

A² + B² = C² where C is the hypothenuse and A and B are the other two sides.

Since the hypothenuse is 50, we can test each statement by taking the square of the two sides and add them up, if they are equal to 50² = 2500, then the statement is true.

A. 24² + 45² = 576 + 2025 = 2601 ≠ 2500, therefore it is false.

B. 30² + 40² = 900 + 1600 = 2500, therefore it is true.

C. 27² + 44² = 729 + 1936 = 2665 ≠ 2500, therefore it is false

D. 14² + 48² = 196 + 2304 = 2500, therefore it is true.

From here, statements B and D are true while the rest are all false.

7 0
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Sarah making a square pillow with edges that need to measure 8 inches long. She needs a strip of fabric four times as long as on
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Answer:

The length of the strip of fabric is 32 inches.

Step-by-step explanation:

Consider the provided information.

The length of the edges of the square pillow should be 8 inches.

She needs a strip of fabric four times as long as one of the pillow to make a border around the pillow.

The length of the strip of fabric = 4×8 inches

The length of the strip of fabric = 32 inches

Hence, the length of the strip of fabric is 32 inches.

6 0
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