in spring 2017, data was collected from a random selection of sta 2023 students. one of the questions asked how many hours they had worked in the past 24 hours. for the 39 randomly selected upperclassmen, the sample mean was 0.61 and sample standard deviation was 2.32. for the 35 randomly selected underclassmen, the sample mean was 1.40 and the sample standard deviation was 2.65. what is the point estimate of the difference in the population mean volunteered between underclassmen and upperclassmen?

Answers

Answer 1

Step-by-step explanation:

Use the following information to answer the next 14 exercises: The mean age for all Foothill College students for a recent Fall term was 33.2. The population standard deviation has been pretty consistent at 15. Suppose that twenty-five Winter students were randomly selected. The mean age for the sample was 30.4. We are interested in the true mean age for Winter Foothill College students. Let X = the age of a Winter Foothill College student. n=

Related Questions

Find the Slope. Show the solution.

1. m = y2 - y1/ x2 - x1

| x | 0 | 1 | 2 | 3 | 4 |
| y | 2 | 3 | 4 | 5 | 6 |

2. y= 2x - 5
m = rise/run

3. (1,8) & (0,2)

Please answer correctly,thank youu! :)

Answers

1.
0-1/2-3 = 1
1-2/3-4 = 1
2-3/4-5 = 1
3-4/5-6 = 1
Since all of these are equal to 1, the slope for the table is 1

2. The slope is 2 as the slope is the number before x on a linear equation

3. 1-0/8-2 = 1/6

On a map, 2 inches represents 60 miles. If a line between two cities measures 9 inches, how many miles apart are they?

Answers

2 inches = 60 miles:

60 miles/ 2 inches = 30 miles per inch.

30 miles per inch x 9 inches = 270 total miles.

Answer: 270 miles

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Answers

Answer:

i gauth math NYU po meron yan

What is the answer to 4y/y?

Answers

Answer:

Step-by-step explanation:

[tex]\frac{4y}{y}[/tex] = 4 because the variable y on the numerator and the denominator can cancel out.

What is the slope for M(4,-8 negative) N(6,-1 negative)

Answers

Answer:

m=7/2

Step-by-step explanation:

Owen had 8,452 books donated to our school. If he shares with with 23 classes about how many books does each class get? Again assesment due tom :,)

Answers

Answer:

327.5

Step-by-step explanation:

8452/23 = 327.478

Round to about 327.5 books per class

Answer:

each class gets 367 books

rewrite in simplest form

0.7k-5(-7k-4)

Answers

Answer:

Step-by-step explanation:

357k + 200

——————————

35.7k+20 is the answer i believe

Mr. Ocampo has two kind of fruit in his basket. The ratio of apples to oranges is 3:2. If there are 18 apples then how many pieces of fruit are there.

Answers

Answer:

There are 27 pieces of fruits

Step-by-step explanation:

Given, apples=18

ratio of apples to oranges =3:2

Now, x/18 =3/2

or, 2x=18*3

or, x=54÷2

x =27„

please mark as branliest answer

hope it helps you

Jemina has 4 dogs, 8 cats and 12 fish as pets at her house.
What is the ratio of cats to all of her pets?

Answers

Answer:

8:16

Step-by-step explanation:

Please help me with this homework homework

Answers

Answer:

Its A=2.38

Step-by-step explanation:

6cup=558 gram

1cup=558/6

1cup=93 gram

13gram*17kg=221gram

221/93=2.38

I think the answer is A.

Given trapezoid WXYZ, what is XY?

Answers

Step-by-step explanation:

X is the mulplied

Y is the pronouns

HEEEEELLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!

Name my faviorate food and you get brainliest

Answers

Answer:

pizza , or KFC, chic fil a

3. Mr. Tipplat can grade 4 papers in 3 minutes. How long wil it take him to grade 22 papere?

Answers

Answer: Find the formula and there you go

Step-by-step explanation: Each 4 papers = 3 minutes keep adding it until I get near twenty one and don't go over

h(x)=2x+5 for h(x+3)
solve for h(x+3)
pls help aaaaaaaaaaaa i

Answers

Answer:

According to transitive Property of equality : If a =b and b = c then a = c

In this problem you are given with 2 equations:

h(x) = - 2x + 5 ---- 1

h(x) = 3 ------ 2

Apply transitive Property of equality to equation 1 and 2

- 2x + 5 = 3 Now solve for x.

-2x + 5 - 5 = 3 – 5 subtract 5 on both sides.

-2x = -2

(-2x)/(-2) = (-2) / (-2) Divide with -2 on both sides.

X = 1

Step-by-step explanation: I hope this helps.

If angles are supplementary, then one of the angles is an obtuse angle. Answers are these Sometimes always or never pick one

Answers

An obtuse angle measures 180 degrees if angles are supplementary then one of the angles is about an obtuse angle

Select all of the trips that would take two hours.
a. Drive 60 miles per hour between Raleigh and
Wilmington, which are 120 miles apart

b. Walk 3 miles per hour to school, which is ½ mile
away

c. Take a train going 70 miles per hour from Hershey to
Philadelphia, which are 140 miles apart

Answers

Answer:

A and C

Step-by-step explanation:

ive seen this question before

Solve the equation. -4 (m + 3) = 24

Answers

Answer:

Answer is( - 9)

Step-by-step explanation:

Hope it helps

Hello there!

-4(m+3)=24

Use the Distributive Property:

-4(m+3)=24

-4m-12=24

-4m=24+12

-4m=36

m=-9

Hope it helps!

~Just a determined gal

#CarryOnLearning

[tex]MysteriousNature[/tex]

Dan invested $500 in a savings account that earned 5% interest compounded quarterly. How much is in his account after 5 years?

Answers

Answer:

125

Step-by-step explanation:

Multiply 500x0.05x5

(make sure you change the percentage to a decimal do you will get a wrong answer)

I’m so sorry if my answer is wrong

In the expression 4ab + 5a
- 3c, what is the coefficient of the term 4ab ?

Answers

Answer:

Step-by-step explanation:

coefficients are the numbers in a term, and the letter is called constant

Answer:

Step-by-step explanation:

The numeric value of the term is called the coefficient of the term.

xxdrddddfffffdxfddsdddqqwedaqwwssde

Answers

Answer:

Step-by-step explanation:

(5x - 2)² + 35x - 14 = - 12 ( factor out 7 from each term in 35x - 14 )

(5x - 2)² + 7(5x - 2) = - 12 ( add 12 to both sides )

(5x - 2)² + 7(5x - 2) + 12 = 0

Substitute m = 5x - 2 into the equation then in terms of m, the equation is

m² + 7m + 12 = 0 → B

Kyle Lowry earned $31.2 million in US dollars playing for the Toronto Raptors during the 2018–2019 season. How much was he earning in US dollars each hour of the year?
A $2050.20
B $1872
C $3562
D $1300

Answers

Answer:

I think C or D not sure about the question answer

He was earning 3562 each hour.

What is Unitary Method?

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Kyle Lowry earned $31.2 million.

So, In each month he read

= 31200000 / 12

= $2,600,000

and, in each day she earn

= 2, 600, 000 / 30

=86,666.666

and, in each hour she earn

= 2, 600, 000 / 24

= 3611

Hence, He was earning 3562 each hour.

Learn more about unitary method here:

https://brainly.com/question/22056199

#SPJ5

Last year there were 20 girls on the volleyball team. This year the number of girls DECREASED by 10%. How many girls are on the volleyball team this year

Answers

Answer:

Step-by-step explanation:

There are 18 girls on the team this year.

If you take 20 and divide the number by 10 you will get 2.

10%=2

If you multiply 2x10 you get 20.

20-2=18

HELPPPPPPP plssssssss

Answers

Answer:

The length of FB IS D) 7 units

Is this graph misleading?
People of different ages were asked the question "Do
you listen to audiobooks?" The bar graph below
displays the percentage of "yes" responses for
different age groups.
O No, because the bars are all the same width.
O No, because the scale starts at 0.
O Yes, because the bars are not the same height.
O Yes, because the scale does not start at 0.
Audiobook Listeners
0.50
0.40
0.30
Relative Frequency
0.20
0.10
13-17
18-25
36-45
Over 45
26-35
Age

Answers

Answer:

D. Yes, because the scale does not start at 0.

Step-by-step explanation:

Round to the Nearest hundred

The equation of the line of best fit of the data is y = ________

The correlation coefficient is r = ______

Answers

Answer:

54353456452

Step-by-step explanation:

364564

PLS HELP WILL MARK YOU BRAINLIEST!!!

Answers

[tex]\\ \sf\longmapsto (3x-2x^2+3)-(-5x^2+3x+5)[/tex]

[tex]\\ \sf\longmapsto 3x-2x^2+3+5x^2-3x-5[/tex]

[tex]\\ \sf\longmapsto 5x^2-2x^2+3x-3x+3-5[/tex]

[tex]\\ \sf\longmapsto 3x^2-2[/tex]

Answer:

The answer is B

Step-by-step explanation:

3x - 2x^2 + 3 -(-5x^2 + 3x + 5)

3x - 2x^2 + 3 + 5x^2 - 3x - 5

= 3x^2 - 2

i need help fast please

Solve this and show steps

4.5×8-(0.4+9.6-(3.6-1.8))

Answers

Answer:

27.8

Step-by-step explanation:

You need to do brackets first

3.6-1.8 = 1.8

Then substitute

4.5 x 8- (0.4 + 9.6- 1.8)

0.4+9.6-1.8=8.2

4.5 x 8 - 8.2 =27.8

Complete the square to rewrite y=x^2+6x+3 in vertex form. Then state whether the vertex is a maximum or a minimum and give its coordinates

Answers

Answer:

Step-by-step explanation:

take b, divide it by 2 and then square it

(6/2)²=9 so add then subtract 9

(x²+6x+9)+3-9

x²+6x+9=(x+3)²

3-9= -6

(x+3)²-6

The vertex is a minimum and the coordinates are (-3,-6)

find x if 2^x=8^3x-8

Answers

Step-by-step explanation:

First we have to same the bases.

As we know 8=2^3.

Replace 8 with 2^3.

Like this .

2^3x=2^3(2x+1).

Now 3x=3(2x+1) distribute 3 by the Barker.

3x=6x+3.

6x+3=3x.

6x-3x=-3.

3x=-3.

X=-1.

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Answers

57485743i753i457394574930

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