7. A computer company that recently developed a new software product wanted to estimate the mean time taken to learn how to use this software by people who are somewhat familiar with computers. A random sample of 12 such persons was selected. The following data give the times taken (in hours) by these persons to learn how to use this software. 1.75 2.25 2.4 1.9 1.5 2.75 2.15 2.25 1.8 2.2 3.25 2.6 a. What is the point estimate of the population mean

Answers

Answer 1

Answer:

What company

Step-by-step explanation:


Related Questions

What is the distance between point (5, 9) and its reflection across the x-axis?

Answers

Answer:

10 units

Step-by-step explanation:

The lines below are parallel. If the slope of the green line is -2, what is the
slope of the red line?

Answers

Answer:

C. -2

Step-by-step explanation:

All parallel lines have the same slope

ineeeddddddyoooouuuurrrrr hhhheeeellllpppp ppppllllssss

Answers

D. 36cm^3

Hope this helps!

Answer:

d. you just have to multiply everything

Find the unknown value in the proportion. 3/5 = x/20. what is the value of
X?

Answers

The answer should be x=12

What is the area of the shaded region in the figure?

Answers

Answer:

look at the picture i sent please

Find the surface area of the rectangular prism.

HELP ME PLS ASAP PLS PLZ

Answers

Answer: 222 cm

Explanation: 9x3=27x2=54
7x3=21x2=42
7x9=63x2=126
54+42+126=222
The answer is 222 centimeters

Evaluate each expression if m = 3 and n = 7. n to the power of 2 - 2m plz

Answers

Answer:

[tex]7^{2}[/tex] -2 * 3 is equal to 43

Step-by-step explanation:

i know this isnt math but pls help me with this ASAP

Answers

some of the darwens spiders have different traits for flexibility because they each got different different traits from each parent. like offspring A and C got their traits from their mother. offspring B got its traits from its father. and Offspring D got their traits from both mother and father.

I hope this helps

1pt = what fl oz please I need this asap

Answers

Answer:

16 fl oz

1 cup is 8

x2

16 fl oz.

4/15 x 6 in simplest form

Answers

Answer:

1.6

Step-by-step explanation:

4/15= 0.2666
0.2666 x 1.5996 ~ 1.6
so the answer is 1.6 :D

PLEASE HELP WILL MARK BRAINLIEST!!
What is the value of j?

Answers

Answer:

21

Step-by-step explanation:

simply

the square represents 90 degrees and 90 - 61 is 21

15. Paula bought a ski jacket on sale for $20
less than half of its original price. She
paid $68 for the jacket. What was the
original price?

Answers

Answer:

Step-by-step explanation:

P/2-20=68, add 20 to each side

P/2=88, multiply each side by 2

P=$176

The original price was $176

Help

Amelia's water bottle holds 4 pints, 2 cups. How many cups does Amelia's water bottle hold? Note: 1 pint = 2 cups
Group of answer choices

Answers

Answer: it hold 8 cups

Step-by-step explanation:

May I plz get brainlest

If she has 4 pints and 2 cups, and pints still needs converted, then multiply 4 by 2 to get the number of cups per pint. so she has 8+2 cups, or 10 cups in her water bottle

---

hope it helps

What is the value of n ?

Answers

Answer:

n=10

Step-by-step explanation:

5n-20=3n

-20=-2n

10=n

Question
Example
Step by Step
The endpoints of a side of rectangle ABCD in the coordinate plane are at A (2.11) and
B7, 1). Find the equation of the line that contains the given segment
The line segment is BC.
The equation is y =
llo

Answers

need more to answer

I need the median for 1,6,9

Answers

the median would be 6 because the median is the data value separating the top half from the lower half
hope this helps :D

midsegment of a trapezoid find x​

Answers

Answer:

x = 7

Step-by-step explanation:

Based on the midsegment theorem of a trapezoid, thus:

NP = (JK + ML)/2

Substitute

45 = (3x + 11 + 10x - 12)/2

2*45 = 13x - 1

90 = 13x - 1

90 + 1 = 13x

91 = 13x

Divide both sides by 13

91/13 = x

7 = x

x = 7

ANSWER CORRECT FOR BRAINLIEST - 10 POINTS
Which step in the software development life cycle analyzes the scope of work?

Coding
Design
Planning & Analysis
Testing

Answers

Answer:

planning and analysis

Step-by-step explanation:

Multiply the following using the vertical multiplication method:
x2 + 5x +1
x3x2 - 2x +4
O
A. 3x4 - 13x3 +3x2 + 18x + 4
B. 3x4 - x2 + 3x2 + x + 4
o
C. 3x4 + x2 + x2 +18x + 4
o
D. 3x4 +13x3 - 3x2 + 18x + 4

Answers

Answer:

a I think I might be a try it tell me if I am wrong

You are traveling down a country road at a rate of 95 feet/sec when you see a large cow 300 feet in front of you and directly in your lane. The cow is fearless, and staring you down. (Or perhaps she does not understand the gravity of the situation.) Regardless, if you simply hit your brakes, after t seconds, the car will be j(t) = 95t - 9t^2 feet from the point where the brakes were first applied.
1) Must you steer to avoid the cow, or can you rely solely on your brakes? Explain.
2) Graph J(t), j'(t), and j"(t) and Interpret their meanings in context.
3) Is there a time t after which the graphs in part (ii) probably do not accurately model the path of the car?
4) Write a piece-wise function using j(t) that would more accurately model the path of the car on the interval [0, 10], assuming the car did not move after it stopped. Sketch this graph and its derivative.

Answers

Answer:

1) You can rely solely on your brakes because when doing so the car will just travel 250ft from the point you hit your brakes till the point the car stopped completely, leaving you 50ft away from the cow.

2) See attached picture.

j(t) represents the distance from the point you hit the brake t seconds after you hit it in feet

j'(t) represents the velocity of the car t seconds after the brakes have been hit in ft/s.

j"(t) represents the acceleration of the car t seconds after the brakes have been hit in [tex]ft/s^{2}[/tex]

3) yes, any time after t=5.28 will not accurately model the path of the car since at that exact time the car will reach a velocity of 0ft/s and unless another force is applied to the car, then the car will not move after that time.

4) [tex]j(t)=\left \{ {{95t-9t^{2}; 0\le t<5.28s} \atop {250.69; 5.28s\leq t \leq 10s}} \right.[/tex]

[tex]j'(t)=\left \{ {{95-18t; 0\leq t<5.28s} \atop {0 ; 5.28s\leq t \leq 10s}} \right.[/tex]

(see attached picture for graph)

Step-by-step explanation:

1) In this part of the problem we need to find the time when the speed of the car is 0. Gets to a complete stop. For this we will need to take the derivative of the position function so we get:

[tex]j(t)=95t-9t^2[/tex]

[tex]j'(t)=95-18t[/tex]

and we set the first derivative equal to zero so we get:

95-18t=0

and solve for t

-18t=-95

[tex]t=\frac{95}{18}[/tex]

t=5.28s

so now we calculate the position of the car after 5.28 seconds, so we get:

[tex]j(5.28)=95(5.28)-9(5.28)^{2}[/tex]

[tex]j(5.28)=250.69ft[/tex]

so we have that the car will stop 250.69ft after he hit the brakes, so there will be about 50ft between the car and the cow when the car stops completely, so he can rely just on the breaks.

2) For answer 2 I take the second derivative of the function so I get:

[tex]j(t)=95t-9t^{2}[/tex]

[tex]j'(t)=95-18t[/tex]

j"(t)=-18

and then we graph them. (See attached picture)

j(t) represents the distance from the point you hit the brake t seconds after you hit it in feet

j'(t) represents the velocity of the car t seconds after the brakes have been hit in ft/s.

j"(t) represents the acceleration of the car t seconds after the brakes have been hit in [tex]ft/s^{2}[/tex]

3)  yes, any time after t=5.28 will not accurately model the path of the car since at that exact time the car will reach a velocity of 0ft/s and unless another force is applied to the car, then the car will not move after that time.

4) [tex]j(t)=\left \{ {{95t-9t^{2}; 0\le t<5.28s} \atop {250.69; 5.28s\leq t \leq 10s}} \right.[/tex]

[tex]j'(t)=\left \{ {{95-18t; 0\leq t<5.28s} \atop {0 ; 5.28s\leq t \leq 10s}} \right.[/tex]

(see attached picture for graph)

Plz answer will mark brainliest

Answers

Answer:

Step-by-step explanation:

w and d are the width and diagonal, respectively.

w = d/2 + 1 = (d+2)/2

Pythagorean theorem

w^2 + 8^2 = d^2

substitution

(d+2)^2/4 +64 = d^2

(d+2)^2 + 256 = 4d^2

d^2+4d+4 + 256 = 4d^2

3d^2-4d-260 = 0

Quadratic formula

d = [4±√( 4²-4(3)(-260))]/[2⋅3] = 10, -26/3

-26/3 is an extraneous solution, so d = 10 inches

w=d/2 +1 =6 inches

Ant‘s path = 8+6 = 14 inches

Beetle’s path = 10 inches

14 < 1.5(10)

Ant reaches food first.

Please help me fill out the numbers in the box and help me answer the question

Answers

9514 1404 393

Answer:

  (1, 55), (4, 220), (5, 275)

  times 55

Step-by-step explanation:

You know from life experience that the cost of tickets is often proportional to the number of tickets*. Here, you can check that by dividing the cost by the number of tickets for each of the table entries where both are given:

  110/2 = 55 = 165/3

This tells you the cost of 1 ticket is 55. It also tells you the cost of 4 tickets will be 4×55 = 220, and the cost of 5 tickets will be 5×55 = 275.

In short, the cost in dollars is the number of tickets times 55.

_____

* Your life experience will also tell you that sometimes there is a "processing fee" that makes the relation non-proportional. No such fee is evident here.

__

Alternate solution

Since the relation is proportional, you can find the cost of 1 ticket by dividing the cost of 2 tickets by 2: 110/2 = 55. You can find the cost of 4 tickets by doubling the cost of 2 tickets: 2×110 = 220. You can also find the cost of 5 tickets by adding the costs of 2 and 3 tickets: 110 +165 = 275.

HELP ASAP
which expression can be used to solve 2/3 divided by 1/6

A. 2/3 x 1/6

B. 2/3 x 6/1

C. 3/2 x 1/6

D. 3/2 x 6/1

Answers

Answer:

B

Step-by-step explanation:

2/3 ÷ 1/6

=2/3 × 6/1

sorry if I got it wrong

Answer:

A

Step-by-step explanation:

it a because 2/3 yout divide that then you divide 1/6 right you just have to find the one that matches the number 2/3 1/6 so it A

Tags uncle gave him 25 baseball cards to start his collection. Every week, Tag buys 5 more cards.



Write an equation that represents the total number of baseball cards Tag has in his collection. Let x represent the number of weeks Tag bought cards, and let y represent the total nimber of cards Tag has​

Answers

Answer:

so you would say 5 × 5 = 25 or 25÷5=5

Answer:

y=25+5x

Step-by-step explanation:

Help PLS ILL GIVE BRAINLIEST FOR CORRECT ANSWER



A: 4.5 ounces


B: 8 ounces


C: 280 ounces


D: 288 ounces

Answers

Answer:

what's the question for this?

WORTH 25 points!! NEED ASAP!! REALLY IMPORTANT

Answers

Answer:

V = (4.2)(7.5)·w

if w = 2 then V = 63 ft³

Step-by-step explanation:

V = l·w·h

V = (4.2)(7.5)(2)

V = 63

Which of the following statements is true about the unknown leg length? Select that apply.

Answers

Answer:2,3,5 srry that I am late just did the question

Step-by-step explanation:

Helpppppppppp sjsndkejsnsnsb

Answers

Answer:

18.8 fleck dickon Dunn dream fun deep

What is the equation of a line that has a slope of -3 and passes through the point (2,5)?
A y=-3x - 1
B. y=-3x +11
C.y= 2/5x -3
D. y=5/2x-3

Answers

Answer:

B

Step-by-step explanation:

the answer is B y=-3x+11

An expression equivalent to -4(2k-6)

Answers

Answer:

-8k + 24

Step-by-step explanation:

Is your expression.

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