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
kow [346]
2 years ago
11

The management of a supermarket wants to find if there is a relationship between the number of times a specific product is promo

ted on the intercom system in the store and the number of units of that product sold. To experiment the management selected a product and promoted it on the intercom system for seven days. The following table gives the number of times this product was promoted each day and the number of units sold.
Number of Promotions per Day Number of Units Sold per Day (hundreds)
15 11
22 22
42 30
30 26
18 17
12 15
38 23
a) With the number of promotions as an independent variable and the number of units sold as the dependent variable determine the least squares regression line. Give the equation of the line.
b) Compute r and r2. Explain their meaning.
c) Predict the number of units of this product sold on a day with 35 promotions.
d) Construct a 98% confidence interval for \beta .
e) Test at the 1% significant level that \beta is \beta \neq 0.
Mathematics
1 answer:
Degger [83]2 years ago
5 0

Answer:

15 11

Step-by-step explanation:

You might be interested in
2-94. Multiple choice: which of the following numbers could not represent a probability? Write a sentence explaining why they co
ziro4ka [17]

Answer:

it is A

Step-by-step explanation:

it has to be a because you cant have a negative chance at chosing something it would just be zero B.you have a 1.00 chance at chosing something C.you have a 1 oit of 100 chance at chosing something and D.you have a 1 out of 10 chance at chosing something

3 0
3 years ago
The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation (MAD) of both data sets is 2.5. What is
Ede4ka [16]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
The HCF and LCM of two numbers x and 126 are 24 and 840 respectively. Find the value of x.
Zigmanuir [339]

Answer:

x=160

Step-by-step explanation:

x×126=24×840

x=\frac{24 \times840}{126} =160

8 0
3 years ago
There are three scoring areas in an outdoor game, 5 points, 10 points and 25 points. What is the total number of point a player
sammy [17]

5(4) is 20. 10(8) is 80. 25(3) is 75. 20+80+75 equals 175. He has a total score of 175.

8 0
2 years ago
Read 2 more answers
If correct i will mark you brailnliest
bixtya [17]
21.5m squared
i just multiplied them
5 0
3 years ago
Read 2 more answers
Other questions:
  • Jeremiah received $65 for his birthday and used part of it to buy 3 video games. The games cost the same amount, and he had $14
    6·1 answer
  • A jar contains 6 chocolate chip cookies and 9 peanut butter cookies. Richard grabs 3 cookies at random to pack in his lunch. Wha
    5·1 answer
  • Use the graph to state the solution for the system.
    11·1 answer
  • Use the graph of f(x) to answer the question. What is the output of f when x=−6? Enter your answer as a number, like this: 42
    6·1 answer
  • The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass
    8·1 answer
  • Laura earns $134,350 per year. Use Laura’s income tax rate to determine what her monthly deduction should be . ( the tax is 28%)
    12·1 answer
  • What is the connection between rational exponents and radicals?
    13·2 answers
  • During the first round of a game, Silas
    12·2 answers
  • Consider the following statements.
    11·1 answer
  • This is URGENT SHAWTYS
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!