08.01)Marlow wants to know how many students in his school enjoy watching the TV news. He asks all 27 students in his art class and finds that 30% of his classmates enjoy watching the TV news. He claims that 30% of the school's student population would be expected to enjoy watching the TV news. Is Marlow making a valid inference about his population?No, it is not a valid inference because he asked all 27 students in his art class instead of taking a sample from the school

No, it is not a valid inference because his classmates do not make up a random sample of the students in the school

Yes, it is a valid inference because he asked all 27 students in his art class

Yes, it is a valid inference because his classmates make up a random sample of the students in the school

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Question 2 (Multiple Choice Worth 5 points)

(08.01)Carl takes a random sample of 100 students in his school and finds that 72% of the sample prefers pizza over burgers. There are 1,500 students in the school. Based on the sample proportion, how many students in the school would be expected to prefer pizza over burgers?

72

100

1,080

1,500

Answers

Answer 1

Answer: Part 1 : Marlow wants to know how many students in his school enjoy watching the TV news. He asks all 27 students in his art class and finds that 30% of his classmates enjoy watching the TV news. He claims that 30% of the school's student population would be expected to enjoy watching the TV news. Is Marlow making a valid inference about his population?

No, it is not a valid inference because he asked all 27 students in his art class instead of taking a sample from the school

No, it is not a valid inference because his classmates do not make up a random sample of the students in the school

Yes, it is a valid inference because he asked all 27 students in his art class

Yes, it is a valid inference because his classmates make up a random sample of the students in the school

Answer = The correct answer is B because Marlow was supposed to ask random kids and they were not suppose to be in his class.

Part 2 : Carl takes a random sample of 100 students in his school and finds that 72% of the sample prefers pizza over burgers. There are 1,500 students in the school. Based on the sample proportion, how many students in the school would be expected to prefer pizza over burgers?

72

100

1,080

1,500

1500 / 100×72= 1080

Answer 2

Answer:

No, it is not a valid inference because he asked all 27 students in his art class instead of taking a sample from the school.

Related Questions

Rewrite y = -2+7 in standard form
If 2/5 divided by blank = 4/5 what is blank
The population of a city in Dallas area went from 35,000 to 87,500 in 12 years . What is the percent of increase
Given f(x)=10x over 2+7, find f^-1(x)I have provided a picture of the equation for it to be easier to read
Based on the given information, what can you conclude, and why? Given: <H congruent to <L; Line HJ congruent to Line JLA. <HIJ congruent to <LKJ by ASAB. <HIJ congruent to <JLK by SASD. <HIJ congruent to <LKJ by SAS

Explain your answerSimplify the difference.

(4w2 - 7w - 6) - (8w2 + 2w - 3)
Choose one answer.
a. -4w2 - 9w - 3
b. 12w2 + 9w + 3
c. -4w2 - 5w - 9
d. 12w2 - 5w - 9

Answers

$(4w^2-7w-6)-(8w^2+2w-3)\n -(a\pm b)=-1(a\pm b)\ \ \ \ |use\ a\ distributive\ property: a(b\pm c)=ab\pm ac\n\n\=4w^2-7w-6-8w^2-2w-(-3)\n\n = 4w^2-7w-6-8w^2-2w-(-3)\n\n=(4w^2-8w^2)+(-7w-2w)+(-6+3)\n\n=\boxed{-4w^2-9w-3}$

(4w² - 7w - 6) - (8w² + 2w - 3)
(4w² - 8w²) + (-7w - 2w) + (-6 + 3)
-4w² - 9w - 3
The answer is A.

Veronica is buying cubed cheese from Mr. Sands deli she asked for 1 3/4 pounds when Mr. Sand places some cheese in a container and weighs it the scale shows 1 1/4 pounds the container weighs 1/16 pound how many more pounds of cheese would Mr. Sand need to add to the scale to get the amount that veronica asked for? Explain how you solved the problem

Answers

Amount of cubed cheese that Veronica wants to buy = 1 3/4 pounds
   = 7/8 pounds
Weight of the container in which Mr. Sand places the cube = 1/16 pounds
Weight of the cubed cheese and container together = 1 1/4 pounds
      = 5/4 pounds
Then
Amount of cubed cheese placed by Mr. Sands = (5/4 - 1/16) pounds
      = (20 - 1)/16 pounds
      = 19/16 pounds
So
The quantity of more cheese that
Mr.Sands need to add to the scale = (7/4 - 19/16) pounds
   = (28 - 19)/16 pounds
   = 9/16 pounds.
From the above deduction we can easily conclude that Mr. Sand needs to add 9/16 pounds of cubed cheese to fullfil the order placed by Veronica.

Answer: 9/16

Step-by-step explanation:

First, we must find the answer to the hidden question: How much cheese did Mr. Sand put in the container without the weight of the container? We can rename 1 1/4 to 1 4/16, so 1 4/16 - 1/16 = 1 3/16

Now we must find the amount of cheese that needs to be added. We can rename 1 3/4 to 1 12/16 by multiplying it by 4/4. 1 12/16 - 1 3/16 = 9/16

9/16 pound of cheese should be added to get the amount Veronica asked for.

A hot air balloon ascended to a height of 35 meters 2 minutes after launch. After some time, the balloon's attitude began to change by −3 1/4meters every minute for 9 minutes. To avoid a tree, the hot air balloon flew up by 5 1/2 meters. What is the new altitude of the hot air balloon? _________ meters

Answers

Answer

Step-by-step explanation:

≈0.161

Result9 over 56 approximately 0.161

Step by step

Step 1 of 2: Divide.

Divide

1 over 7

÷ 8 over 9

= 9 over 56

Step 1 of 2: Divide.Show the work

Step 2 of 2: Simplify.

Simplify

9 over 56

The product of (a + b)(a − b) is a perfect square trinomial.
A. Sometimes b. Always c. Never

Answers

never
perfect squre trinomial is in form
(a+b)(a+b) or (a-b)(a-b)
that is not equal to (a+b)(a-b)

never

Answer:

C. Never

Step-by-step explanation:

Two sides of a right triangle have the lengths 4 and 5. What is the product of the possible lengths of the third side? Express the product as a decimal rounded to the nearest tenth.

Answers

Answer:

19.2

Step-by-step explanation:

1st Case:

4 and 5 are legs of the right triangle.

Using the pythagorean therom: a^2+b^2=c^2

We can say that 4^2+5^2=x^2

16+25=x^2

41=x^2

x=√41

√41 is about 6.4

x=6.4

2nd Case

5 is the hypotenuse of the right triangle and 4 is the legs.

Using the pythagorean therom: a^2+b^2=c^2

We can say that 4^2+x^2=5^2

16+x^2=25

x^2=9

x=3

Final Step

We need to multiply the two possible lengths for x. So for case 1 the length of x was 6.4 and for case two the length was 3. 6.4*3=19.2

Anwser: 19.2

If one container holds 55 balls, how many balls will nine containers hold?

Answers

1 container = 55 balls
x 9 x 9
9 containers = ? balls
55 x 9 = 495

The answer is 495 balls

if one container holds 55 balls then you times 55 with 9 if you want to know how many balls 9 containers hold and the answer is 495

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Sue deposited $3000 in a savings account earning 2% interest over 8 years. What was the total interest Sue earned?

The distance from Kallie's home to school is 1.85 miles. The school is 2.34 miles from Sonic, which is 19 miles from Kollie's home. If Kallie goes from home to school, from school to Sonic, ond them home, how for does she travel?