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
Ksenya-84 [330]
3 years ago
12

An advertising executive wants to determine if a new billboard placed in a city caused sales of her product to increase. To do t

his, she selects random stores that sell the product on the billboard and compares the amount sold in one business cycle before the billboard was placed to the sales of one business cycle after. Suppose that data were collected for a random sample of 10 stores, where each difference is calculated by subtracting the number of units sold in thousands before the billboard was placed from the number of units sold in thousands after the billboard was placed. Assume that the numbers are normally distributed. The executive uses the alternative hypothesis Ha:μd>0. Using a test statistic of t≈6.537, which has 9 degrees of freedom, determine the range that contains the p-value.

Mathematics
1 answer:
zepelin [54]3 years ago
3 0

Complete Question

The complete question is shown on the first and  second uploaded image

Answer:

The correct option is the first and the last option

Step-by-step explanation:

From the question we are told that

   The sample size is  n =  10

   The null hypothesis is  H_o :  \mu_d  =  0

   The alternative hypothesis is  H_a :  \mu_d  >  0

    The test statistics is  t \approx 6.537

   The level of significance is  \alpha  = 0.05

Generally the p-value is mathematically represented as

    p-value  =  P(t >  6.537 )

From z-table  P(t >  6.537 ) = 0

So  

   p-value  =  0

From the value obtained we see that p-value < \alpha hence we reject the null hypothesis that the true mean difference between the number of units sold after the billboard was placed and the number of units sold before the billboard was placed is equal to zero

Thus we conclude that

Based on the results of the hypothesis test, there is not enough evidence at the level of significance(0.05) to suggest that the true mean difference between the number of units sold after the billboard was placed and the number of units sold before the billboard was placed is greater than zero    

You might be interested in
What is (f-g)(X) ? I'm confused help
Marianna [84]
Good day ~_~ /////////////

8 0
3 years ago
Read 2 more answers
Solve either of the correct equations using any
gregori [183]

Answer: 7 days

Step-by-step explanation: just knows it right :)

7 0
3 years ago
Read 2 more answers
A pillowcase requires 1 1/3 yards of material. If Mrs. Huerta plans to sew six pillowcases, then how many yards of fabric does s
Neko [114]
8 yards bc you just multiply the unit cost of each pillow (1 1/3 yards) by 6 bc that’s the total amount of pillows she’s making
7 0
3 years ago
Read 2 more answers
Simplify: <br> a.) -3^3<br> b.) 1/3^-3
jenyasd209 [6]

Answer:

a.) -9

b.) -1

Step-by-step explanation:

8 0
3 years ago
Find: 1. three quartiles and 2. interquartile range (IQR).<br> 1, 3, 9, 12, 12, 14, 18
Alex_Xolod [135]
Q1=3 Q2[median]=12 Q3=14 and the IQR is 11
3 0
3 years ago
Other questions:
  • Is 15/4 an irrational number?
    14·1 answer
  • I need help with this one I need quick
    7·1 answer
  • The equation of a line is 4x−3y=−24.
    6·2 answers
  • What is the answer to this question?
    7·2 answers
  • I<br> 18, 18, 7, 18, 16, 7, 10, 18<br> 4)<br> Mean<br> Median<br> Mode
    9·1 answer
  • X/7 ≥ -6 your answer must be simplified
    10·1 answer
  • Use substitution to solve the system of equations​
    15·2 answers
  • Carbon–14 is a radioactive isotope that decays exponentially at a rate of 0.0124 percent a year. How many years will it take for
    5·1 answer
  • Find the amount of x. 2x+4=3x-10
    7·2 answers
  • A triangle with vertices D, E, and F are plotted on the coordinate plane at (0, 5). (2, 0), and (-4, 2), respectively. When cons
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!