A manufacturer claims that its new hand sanitizer reduces the number of days an average person is sick in a year. To test this claim, a researcher decided to conduct an experiment. The researcher randomly selected 300 people, divided into subject groups by age. Over the course of a year, all the subjects regularly used the hand sanitizer. At the end of the year, the researcher compared the number of days that the subjects in each group were sick.

Which statements about this experiment are true?

A Manufacturer Claims That Its New Hand Sanitizer Reduces The Number Of Days An Average Person Is Sick

Answers

Answer 1

Answer:

The study uses blocking and random sampling.

Step-by-step explanation:

Answer 2

The statement with respect to the experiment should be true is that The study uses blocking and random sampling.

What is random sampling?

It should be the part of the technique related to sampling where each and every sample should contain equivalent probability of being selected. The sample that should be selected on random basis should be mean to be non-biased with respect to the total population.

hence, The statement with respect to the experiment should be true is that The study uses blocking and random sampling.

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Related Questions

need help asapppppppppp​

Answers

Answer:

201.53[tex]m^{2}[/tex]

Step-by-step explanation:

That is a hexagonal pyramid, which means it consists of one hexagon and six triangles.

Let's first find the hexagonal base.

The formula to find the area of a hexagon is [tex]\frac{3\sqrt{3}}{2}a^{2}[/tex], where a is the length of one side of the hexagon. In this question, a = 6m

Solve that to find that the area of the hexagon is 93.53m^2.

Now, on to the triangles. The area of one triangle is the base times the height, then halved. We know that the base of the triangle is 6m as it shares the base with a side of the hexagon, and the question states that the height is also 6m.

6 * 6 = 36

36 / 2 = 18

Hence, the area of one triangle is 18m^2

However, there are six triangles - not just one!

6 * 18 = 108

Adding everything up:

93.53 + 108 = 201.53

The answer is 201.53m^2

PLEASE HELP FOR A TEST IT'S DUE IN 5 MINUTES!

Floyd decides to invest $1,000,000 in a 20-year annuity that earns 4.6% APR compounded monthly. How much money will Floyd be paid each month from this annuity?

Answers

Answer:

$6380.38

Step-by-step explanation:

Floyd will be paid $2,504,880 each month.

What is Compound Interest?

Compound interest is an interest of interest to the principal sum of a loan or deposit. The concept of compound interest is the interest adding back to the principal sum so that interest is earned during the next compounding period.

Given that Floyd invests $1,000,000 in a 20-year annuity that earns 4.6% APR compounded monthly.

A = P(1+r)ⁿ

A = 1,000,000(1+0.046/12)²⁰⁽¹²⁾

A = 2,504,880

Hence Floyd will be paid $2,504,880 each month.

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Triangle srt is shown. Choose the correct equation or phrase to fill in each blank in the paragraph. For each blank, fill in the bubble before the equation or phrase that is correct.

How to do this question.

Answers

Answer:

is there an image or something to look at? we need one to give the answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

Beads are sold in a cylindrical container
with a diameter of 13 cm and a height
of 4 cm. How many cubic centimeters
of beads does this container hold?

Answers

20cm

dbdjdfg

sbdjwpwhdd

dbdjdldownnwkdldkwjw

dbk202$;%%

A farmer sells 8.7 kilograms of pears and apples at the farmer's market. 3/4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?

Answers

Answer:

2.2 kg

Step-by-step explanation:

1000g = 1kg

8700g = 8.7kg

3/4 = 75%

8700 / 100 = 87

87 * 75 = 6525

8700 - 6525 = 2175

2.175kg or if rounded 2.2kg

Please i need help with this question

Answers

Answer:

785cm³

Step-by-step explanation:

3.14×5=15.7

15.7×5=78.5

78.5×10=785

785cm³

Answer:

Volume is 785 cm^3

Step-by-step explanation:

Well first you can find the area of the base which in this case is the circle.

Follow the formula to find area of a circle

a=πr^2

We know π is 3.14 so plug in the radius which is 5

3.14*5^2=a

Solve and you’d get 78.5

Now multiply the base by the height

78.5*10= 785

1. A spinner has 5 equal sectors numbered 1 through 5. What is the probability that the result of a spin will be an odd number?
* Will be remarked as Brainliest*

Answers

Answer:

60%

Step-by-step explanation:

Possible numebrs that can be picked are 1,2,3,4,5

The only odd numbers are 1,3,5

3 odd numbers out of 5 possible numbers

3/5=0.6=60%

What is the distance, d, between the points (3,) and (,1)? Enter your answer in the box. Enter your answer in simplest radical form. d =​

Answers

Answer:The answer is (√229)/6

Step-by-step explanation: i dont know

Answer:

[tex]([/tex]√[tex]\frac{229}{6}[/tex][tex])[/tex]

Step-by-step explanation:

Easy.

Name an angle of

C) 140°

Answers

Answer:

angle C is 90°

Step-by-step explanation:

(sorry if thats not the answer the question is confusing)

have a nice day!! :)

Pomocy. Wskaż powierzchnię całkowita sześcianu, którego objętość jest równa 64 cm.
4. 16 om?
B. 64 cm
C. 96 cm2
D. 512 cm?​

Answers

Answer:

C. 96 cm²

Step-by-step explanation:

Objętość sześcianu = 64 cm³

Krok 1

Znajdujemy długość boku sześcianu

Objętość = (długość boku) ³

64 = a³

a = pierwiastek sześcienny (64)

a = 4 cm

Krok 2

Znajdujemy obszar sześcianu

Wzór na całkowitą powierzchnię sześcianu = 6a²

a = 4 cm

Całkowita powierzchnia = 6 × 4²

= 6 × 16

= 96 cm²

Opcja C jest właściwą opcją

A gray crayon is made with 5mL of black wax for every 6 mL of white wax

Answers

The correct answers are B and D

A triangle has side lengths of 17 inches, 19 inches, and 10 inches. What kind of triangle is it?

Answers

Answer:

Scalene triangle

Step-by-step explanation:

a scalene triangle has 3 uneven sides

What is the area of the triangle given below?
2
11
O A. 11 sq. units
B. 13 sq. units
C. 8 sq. units
O D. 22 sq. units

Answers

Answer:

Area = 11 sq. units

Step-by-step explanation:

Base = 11 units

height = 2 units

Area = 1/2 × base × height

Area = 1/2 × 11 × 2

Area = 11 sq. units

11 square units is the area of the triangle , option A is correct.

What is Triangle?

A triangle is a three-sided polygon that consists of three edges and three vertices.

The formula to find area of triangle is half times of base and height

Given Base is 11 units

height is 2 units

Area = 1/2 × base × height

Plug in the values of base and height

Area = 1/2 × 11 × 2

Area = 11 sq. units

Hence, 11 square units is  the area of the triangle , option A is correct.

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The tape diagram represents an equation (look at picture!!)

Answers

Answer:

1/4 + m = 2/3

Step-by-step explanation:

(4-1) (4-1) (4-1)
please do in algebric exp​

Answers

Answer:

27

Step-by-step explanation:

Correct me if i'm wrong but I read this as (4-1)x(4-1)x(4-1).

Ok so the first step to follow in the order of operation is to do the equations in the paranthesis. 4-1=3.

So it is like dis: 3x3x3.

First 3x3=9, then we do it again but to nine this time. 9x3=27. there u have it

also i cant change my answer or edit it so im sry if this answer is wrong and like- unchangable :/

help plz im so stuck

Answers

Answer:

Step-by-step explanation:

so if you say hi to someone and they dont say it back what do you do

Answers

You can either walk by and just go with it, say dang okay, or you could walk past them like you were saying it to someone else. Good luck to you if you end up in the situation.

Answer:

Give them a dirty look, then say it louder but if u dont want to say it again then just leave them alone. If not BEAT THEM UP

Step-by-step explanation:

A construction company spends w weeks extending an existing road. The existing road is 5 miles long. Each week the company completes 0.2 miles of the extension. Which equation models the total length (L) of the road?

A. L = 0.2w + 5
B. L = 0.2w - 5
C. w = 0.2L + 5
D. w = 0.2L - 5

Answers

Answer:

L = 0.2w + 5

Since there is already 5 miles, your adding 0.2w. Its not 0.2L because that is the total length and its the sum.

Answer:

L= 0.22+5

I did packet

SECTION A:
QUESTION 1
MULTIPLE CHOICE (10 MARKS)
1.1 The way we see, think and feel about ourselves it includes all knowledge we have
about ourselves.
Self esteem
Self-awareness
Self-confidence

Answers

Answer:

Self esteem hope this helps

Please look into this problem!

Answers

Answer:

$85000

Step-by-step explanation:

Answer: The answer is $85,000

Step-by-step explanation: Basically, you have to divide -3,400 on both sides. So 85,000 ÷ -3,400 = -25. Now, you have to substitute x, which is -25. -3,400 x -25 = 85,000. Hope this helps!! :)

can yall help me smart people

Answers

Answer:

D y>0

Step-by-step explanation:

(0,∞)

Three lines intersect to form the triangle shown below. What is the value of x in degrees?

Answers

Answer:

x = 40°

Step-by-step explanation:

The base angles of the triangle are 71° and 69° ( vertical angles ) , then

x = 180° - (71 + 69)° = 180° - 140° = 40°

PLEASE HELP... What do you do when none of the variables cancel out while solving systems by elimination?

Answers

Answer:

multiply one or both of the equations until a variable can cancel out

What goes in the highlighted box?

Answers

Answer:

it's yes

Step-by-step explanation:

hope it help

follow me plsss

What is the image of (−7,−8) after a dilation by a scale factor of 44 centered at the origin?

Answers

Answer:

(-308, -352)

Step-by-step explanation:

For a dilation from the origin, you multiply the x and y by the scale factor.

-7 * 44 = -308

-8 * 44 = -352

(-308, -352)


Which of the following inequalities is true?

Answers

Your answer would have to be c
E is the correct statement because 12 is greater than 5

can someone please factor this expression 27/x³- 8​

Answers

Answer:

(3x-2) (9xsquare+6x+4)

Answer:

Answer is below

Step-by-step explanation:

[tex]\frac{27}{x^{3} } -8= (\frac{3}{x})^{3} -2^{3} =(\frac{3}{x} -2)(\frac{9}{x^{2}}+\frac{6}{x}+4)[/tex]

(  from formula (a³ – b³) = (a – b)(a² + b² + ab)  )

Refer to the figure below. Which of the following statements is true?

Answers

Answer:

c

Step-by-step explanation:

Yesterday only 13 students were absent. The is 4% of the schools enrollment. What is the schools total enrollment?

Answers

Answer: 325 students

Step-by-step explanation:

13 students were absent and this is 4% of the school's total enrollment.

If 13 students represent 4% of the students, assume that x represents 100% of the students:

4% * x = 13

0.04x = 13

x = 13/0.04

x = 325 students

There are 325 students in this school.

need help asappppppp​

Answers

Given:

The right triangular prism.

Height of prism = 28 in.

Hypotenuse of base = 25 in.

leg of base = 24 in.

To find:

The lateral surface area of the prism.

Solution:

Pythagoras theorem:

[tex]Hypotenuse^2=Perpendicular^2+Base^2[/tex]

Using Pythagoras theorem in the base triangle, we get

[tex]25^2=24^2+Base^2[/tex]

[tex]625-576=Base^2[/tex]

[tex]\sqrt{49}=Base[/tex]

[tex]7=Base[/tex]

The perimeter of the triangular base is:

[tex]P=7+25+24[/tex]

[tex]P=56[/tex]

Lateral area of a triangular prism is:

[tex]A=Ph[/tex]

Where, P is the perimeter of the triangular base and h is the height of the prism.

Putting [tex]P=56,h=28[/tex] in the above formula, we get

[tex]A=56(28)[/tex]

[tex]A=1568[/tex]

Therefore, the lateral area of the prism is 1568 in².

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