Homework Help is Here – Start Your Trial Now!
Math
Statistics
a study of store checkout​ scanners, 1234 items were checked and 23   checked items were overcharges. Use a 0.05 significance level to test the claim that with​ scanners, 1% of sales are overchanrges.​ (Before scanners were​ used, the overcharge rate was estimated to be about​ 1%). a. Define the parameter     A. mu   ​= The proportion of all sales that are undercharges   B. p​ = The proportion of all sales that are incorrect   C. p​ = The proportion of all sales that are overcharges   D. mu   ​= The mean number of sales that are overcharges   b. State the null and alternative hypotheses     A. Upper H 0 : mu not equals 0.01 Upper H 1 : mu equals 0.01     B. Upper H 0 : p greater than 0.01 Upper H 1 : p equals 0.01     C. Upper H 0 : p equals 0.01 Upper H 1 : p not equals 0.01     D. Upper H 0 : p equals 23    Upper H 1 : p less than 23     c. Calculate the sample proportion ModifyingAbove p with caret . Which of these options is closes to ModifyingAbove p with caret ​?     A. 0.0260     B. 0.0186     C. 0.1189     D. 0.0093

a study of store checkout​ scanners, 1234 items were checked and 23   checked items were overcharges. Use a 0.05 significance level to test the claim that with​ scanners, 1% of sales are overchanrges.​ (Before scanners were​ used, the overcharge rate was estimated to be about​ 1%). a. Define the parameter     A. mu   ​= The proportion of all sales that are undercharges   B. p​ = The proportion of all sales that are incorrect   C. p​ = The proportion of all sales that are overcharges   D. mu   ​= The mean number of sales that are overcharges   b. State the null and alternative hypotheses     A. Upper H 0 : mu not equals 0.01 Upper H 1 : mu equals 0.01     B. Upper H 0 : p greater than 0.01 Upper H 1 : p equals 0.01     C. Upper H 0 : p equals 0.01 Upper H 1 : p not equals 0.01     D. Upper H 0 : p equals 23    Upper H 1 : p less than 23     c. Calculate the sample proportion ModifyingAbove p with caret . Which of these options is closes to ModifyingAbove p with caret ​?     A. 0.0260     B. 0.0186     C. 0.1189     D. 0.0093

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
See similar textbooks
icon
Related questions
Question

a study of store checkout​ scanners, 1234 items were checked and

23
 
checked items were overcharges. Use a 0.05 significance level to test the claim that with​ scanners, 1% of sales are overchanrges.​ (Before scanners were​ used, the overcharge rate was estimated to be about​ 1%).
a. Define the parameter
 
 
A.
mu
 
​= The proportion of all sales that are undercharges
 
B.
p​ = The proportion of all sales that are incorrect
 
C.
p​ = The proportion of all sales that are overcharges
 
D.
mu
 
​= The mean number of sales that are overcharges
 
b. State the null and alternative hypotheses
 
 
A.
Upper H 0 : mu not equals 0.01 Upper H 1 : mu equals 0.01
 
 
B.
Upper H 0 : p greater than 0.01 Upper H 1 : p equals 0.01
 
 
C.
Upper H 0 : p equals 0.01 Upper H 1 : p not equals 0.01
 
 
D.
Upper H 0 : p equals

23

  
Upper H 1 : p less than

23

 
 
c. Calculate the sample proportion
ModifyingAbove p with caret
.

Which of these options is closes to

ModifyingAbove p with caret
​?
 
 
A.
0.0260
 
 
B.
0.0186
 
 
C.
0.1189
 
 
D.
0.0093
 
 
d. Calculate the test statistic z. Which of these options is closest to​ z?
 
 
A.
4.03
 
 
B.
2.86
 
 
C.
1.71
 
 
D.
3.04
 
 
e. Calculate the​ P-value. Which of these options is closest to the​ P-value?
 
 
A.
0.0024
 
 
B.
0.1032
 
 
C.
0.0034
 
 
D.
0.0013
 
 
f. State the technical conclusion
 
 
A.
Reject Upper H 0
 
 
B.
Do not reject Upper H 0
 
 
g. State the final conclusion
 
 
A.
There is sufficient evidence to warrant rejection of the claim.
 
B.
The sample data support the claim.
 
C.
There is not sufficient sample evidence to support the claim.
 
D.
There is not sufficient evidence to warrant rejection of the claim.
 
h. Based on the​ results, does it appear that the use of scanners has decreased the rate of​ overcharges?
 
 
A.
Yes
 
B.
No
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
SEE MORE TEXTBOOKS