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
Alenkasestr [34]
3 years ago
9

A survey was conducted by an independent price checking company to check an advertiser's claim that it had lower prices than its

competitors. The average weekly total, based on the prices of approximately 95 items, is given for this chain and for its competitor recorded during four consecutive weeks in a particular month.
Week Advertiser (5) Competitor ($) 1 254.28 256.11 2 240.55 255.68 3 235.90 255.20 4 234.15 26115
Is there a significant difference in the average prices for these two different supermarket chains? (Use a = 0,05. Use tri-competitory)
State the null and alternativelypotheses
Mathematics
1 answer:
Mama L [17]3 years ago
5 0

Answer:

a) critical values ≈ -3.182 and 3.182  shows that there is difference in average prices

b)   H0 : μd = 0

    Ha : μd ≠ 0

Step-by-step explanation:

<u>a) Determine if there is any significant difference in the average prices </u>

using ∝ = 0.05

and  μ( advertiser ) - μ ( competitor ) = μd

test statistic ( t ) =  -3.011

df = 3

hence the critical values ( two tailed test ) =  -3.182 and 3.182. this shows that there is sufficient evidence to show that there is difference in the average prices

<u>b) state the hypothesis</u>

 H0 : μd = 0 ( null )

Alternate hypothesis : Ha : μd ≠ 0

You might be interested in
Let p(x)=3x-7. If p(x)=0,find x. A. -7
Misha Larkins [42]

Answer:

D

Step-by-step explanation:

0=3x-7

0=3x+7

7=3x/3

7/3=x

4 0
2 years ago
Find the exact circumference of a circle with the given radius. 3(1/2)cm
aliina [53]
38.48 cm. This is so because the equation to find circumference is \piR squared.
6 0
3 years ago
Convert 2.25 into decimal form
Anna007 [38]
It is 0.0225 because p<span>ercentage means 'out of 100 100 '. Convert the </span>decimal<span> number to a fraction by shifting the </span>decimal<span> point in both the numerator and denominator. Since there are 2 2 numbers to the right of the </span>decimal<span> point, move the </span>decimal<span> point 2 2 places to the right.</span>
6 0
3 years ago
Read 2 more answers
The circle has a radius of 10 cm what is the area of the circle
UkoKoshka [18]
3.14 x radius x radius
3.14 x 10 x10
=314cm squared
4 0
2 years ago
Read 2 more answers
Could someone please explain this to me????
Gnoma [55]

subject to one or more conditions or requirements being met; made or granted on certain terms.

engage in conversation.

reversed in position, order, direction, or tendency. Mathematics. (of a proportion) containing terms of which an increase in one results in a decrease in another. A term is said to be in inverse proportion to another term if it increases (or decreases) as the other decreases (or increases).

In logic and mathematics, contraposition refers to the inference of going from a conditional statement into its logically equivalent contrapositive, and an associated proof method known as proof by contraposition. The contrapositive of a statement has its antecedent and consequent inverted and flipped.

A biconditional statement is a combination of a conditional statement and its converse written in the if and only if form. Two line segments are congruent if and only if they are of equal length. ... A biconditional is true if and only if both the conditionals are true.

an example that opposes or contradicts an idea or theory.

c.

this is in order of each type of statement

hope this helped

4 0
2 years ago
Other questions:
  • Refer to the graph below.
    9·2 answers
  • 3x²+8x+4 how to solve this
    8·2 answers
  • The sum of 5 times the width of a rectangle and twice its length is 26 units. The difference of 15 times the width and three tim
    12·1 answer
  • Derek is writing a report on cell phone usage. He collects data from a random sample of seventh graders in his school, and finds
    11·1 answer
  • Using the fraction 4,6 whats the denominator
    10·1 answer
  • A hamburger franchise is giving away a batch of scratch and win tickets with the chance to win an order of French fries. There i
    9·1 answer
  • Answer number 11 pls
    8·1 answer
  • Ackrabbits are capable of reaching speeds up to 40 miles per hour. How fast is this in feet per second? (Round to the nearest wh
    11·1 answer
  • Enter the number that makes the equation true 2 7/8+1 4/5=__ +1 32/40​
    14·1 answer
  • The correlation in error terms that arises when the error terms at successive points in time are related is termed _____.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!