17.03.2021

Aresearcher interested in springfield citizens' shopping habits surveys a randomly selected group of 200 walmart shoppers. 76% of those surveyed indicated that price was more important to them than where an item was produced. the researcher concluded that "about three quarters of the people in springfield are more concerned with cost than where an item is made."this conclusion might be invalid because:

. 19

Step-by-step answer

17.02.2022, solved by verified expert
Unlock the full answer

Step-by-step explanation:

Given that a researcher interested in Springfield citizens' shopping habits surveys a randomly selected group of 200 Walmart shoppers. 76% of those surveyed indicated that price was more important to them than where an item was produced.

Aresearcher interested in springfield citizens, №15217392, 17.03.2021 12:15

(One tailed test)

Sample proportion p = 0.76

p difference = 0.01

Std error = Aresearcher interested in springfield citizens, №15217392, 17.03.2021 12:15

Test statistic z = p difference / std error = Aresearcher interested in springfield citizens, №15217392, 17.03.2021 12:15

p value = 0.409

Since p >0.05 we accept null hypothesis.

There is no statistical evidence to prove that proportion >3/4 or 0.75

It is was helpful?

Faq

Mathematics
Step-by-step answer
P Answered by PhD
The answer is in the image 

The answer is in the image 

Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
Step-by-step answer
P Answered by PhD

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

Mathematics
Step-by-step answer
P Answered by PhD

30% of 420 are first year students

first year students = (30/100 )*420

=126 students

Student who are not in first year = 420-126

=294 students  

Mathematics
Step-by-step answer
P Answered by PhD

Let the father's age be x and son's be y

10 years before-

Father age=x-10

sons age=y-10

Given,

x-10=10(y-10)

x-10=10y-100

Given present age of father=40

therefore,

x=40

40-10=10y-100

10y-100=30

10y=130

y=130/10

y=13

Therefore present age of son=13years

Mathematics
Step-by-step answer
P Answered by PhD

The solution is given below

The solution is given below
Mathematics
Step-by-step answer
P Answered by PhD

We can put the numbers in ascending order-

36, 38, 39, 39, 40, 47, 48, 51

Range=max-min

          =51-36

          =15

Mathematics
Step-by-step answer
P Answered by PhD

Volume of pool = 1472 m^3

Length = 36.8m

Breadth = 20m

We know,

Volume = l*b*h

1472 = 36.8 * 20 * h

h = 1472/736

h = 2m

Pool is 2m deep

Try asking the Studen AI a question.

It will provide an instant answer!

FREE