1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anni [7]
3 years ago
11

Kelvin and Lewie each design surveys in order to determine the number of people who buy food at the mall. Kelvin surveys every o

ther person leaving the food area. Lewie surveys every fifth person leaving the mall’s main entrance. Which best explains which student’s survey is likely to produce less valid results?
A.Kelvin’s because he surveyed people leaving an area where food is sold
B.Kelvin’s because he surveyed every other person instead of every fifth person
C.Lewie’s because he surveyed every fifth person instead of every other person
D.Lewie’s because he surveyed people who may or may not have bought food
Mathematics
2 answers:
timurjin [86]3 years ago
6 0

Answer: A.Kelvin’s because he surveyed people leaving an area where food is sold


Step-by-step explanation:

Given: Kelvin and Lewie each design surveys in order to determine the number of people who buy food at the mall.

Kelvin surveys every other person leaving the food area.

Thus, he doesn't know about the people who do not buy food at mall whereas Lewie surveys every fifth person leaving the mall’s main entrance.

Thus, by this systematic random sampling he knows out of how many people the number of people buy food at mall.

Hence, Kelvin’s survey is likely to produce less valid results because he surveyed people leaving an area where food is sold.

sammy [17]3 years ago
5 0

Answer:

Answer A.

Step-by-step explanation:

You might be interested in
Ned and Jack are each saving money for a new smartphone. Ned initially has $65 and plans to save $5.50 per week. Jack does not h
julia-pushkina [17]

Answer:

I'm not sure exactly what you're looking but I would set up the equation like this.

y=65+5.5x   for Ned's equation

y=8.75x       for Jack's equation.

Step-by-step explanation:

This is in y=mx+b format, hopefully it helps!

7 0
3 years ago
Classify the slope of the line abovE
gtnhenbr [62]
Answer:

Step-by-step explanation: where’s the slope
6 0
2 years ago
Worth 98 points hElp
BartSMP [9]

Answer:

10 and 1/5

Step-by-step explanation:

11-4/5=10 and 1/5. x must be 10 and 1/5

5 0
3 years ago
Read 2 more answers
Which number is irrational?
german
The answer is A, pi. (Sorry I don’t have the pi symbol on my phone.)
7 0
3 years ago
Read 2 more answers
What is the solution to he equation (y/y-4)-(4/y+4)=3^2/y^2-16
kicyunya [14]

Answer:

y=\pm i \sqrt{7}

Step-by-step explanation:

Given equation is \frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}

Factor denominators then solve by making denominators equal

\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{3^2}{(y^2-16)}

\frac{y}{\left(y-4\right)}-\frac{4}{\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}

\frac{y\left(y+4\right)-4\left(y-4\right)}{\left(y-4\right)\left(y+4\right)}=\frac{9}{(y+4)\left(y-4\right)}

y\left(y+4\right)-4\left(y-4\right)=9

y^2+4y-4y+16=9

y^2=9-16

y^2=-7

take squar root of both sides

y=\pm \sqrt{-7}

y=\pm i \sqrt{7}

Hence final answer is y=\pm i \sqrt{7}.

7 0
3 years ago
Other questions:
  • What is uses numbers, variables,& operation symbol
    13·1 answer
  • If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g –
    8·2 answers
  • Identify the row and column represented by a64.
    6·1 answer
  • what is one possible value of x for which the function g above is undefined? g(x) = √(x-1) (x-2) note: √ iss the root sign
    7·1 answer
  • The volume of the oblique cylinder is 24 ft^3. Which statements are true? Check all that apply.
    11·2 answers
  • Noel currently has a balance of 2300.37 in an account he has held for 34 years. he opened the account with an initial deposit of
    14·1 answer
  • Roman and Ranjan each divided 3.56 by 0.72. Roman got 4.94 for his quotient. Which student divided correctly? How do you know? E
    11·1 answer
  • Picture is attached, with question
    5·1 answer
  • Also need help with this.
    9·2 answers
  • Imagine that you need to compute e^0.4 but you have no calculator or other aid to enable you to compute it exactly, only paper a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!