It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 120 students of its 12124 students, 15 were left-handed. Does this provide enough evidence to show that students at this college have a higher percentage of left-handers than the general American population? Use a 10% level of significance.
It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 120 students of its 12124 students, 15 were left-handed. Does this provide enough evidence to show that students at this college have a higher percentage of left-handers than the general American population? Use a 10% level of significance.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.7: Introduction To Coding Theory (optional)
Problem 7E
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It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 120 students of its 12124 students, 15 were left-handed. Does this provide enough evidence to show that students at this college have a higher percentage of left-handers than the general American population? Use a 10% level of significance.
![T: TEST STATISTIC
The symbol and value of the random variable on this problem are as follows:
Leave this answer as a fraction.
The formula set up of the test statistic is as follows.:
(Leave any values that were given as fractions as fractions)
z =
P-P
V
Z =
p(1-P)
n
Final answer for the test statistic from technology.
Round to 2 decimal places:
O: OBTAIN THE P-VALUE
P-value =
√√
Report to 4 decimal places.
It is possible when rounded that a p-value is 0.0000
M: MAKE A DECISION
7-01-√
(1
Since the p-value ? ✓
we Select an answer ✓
S: STATE A CONCLUSION
There Select an answer significant evidence to conclude](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd57b7bd0-b370-4b8a-8394-d17f179298c2%2Fd5144bd7-cba6-4386-8a20-44df429f9bed%2F31690bx_processed.png&w=3840&q=75)
Transcribed Image Text:T: TEST STATISTIC
The symbol and value of the random variable on this problem are as follows:
Leave this answer as a fraction.
The formula set up of the test statistic is as follows.:
(Leave any values that were given as fractions as fractions)
z =
P-P
V
Z =
p(1-P)
n
Final answer for the test statistic from technology.
Round to 2 decimal places:
O: OBTAIN THE P-VALUE
P-value =
√√
Report to 4 decimal places.
It is possible when rounded that a p-value is 0.0000
M: MAKE A DECISION
7-01-√
(1
Since the p-value ? ✓
we Select an answer ✓
S: STATE A CONCLUSION
There Select an answer significant evidence to conclude
![H: HYPOTHESES
Fill in the correct null and alternative hypotheses:
Ho: ? ? ✓
HA: ? ✓
A: ASSUMPTIONS
? ✓
Since Select an answer information was collected from each object, what conditions do we need to
check?
Check all that apply.
On > 30 or normal population.
n(1-p) ≥ 10
Oo is unknown.
Oo is known.
Onp > 10
ON > 20n
Check those assumptions:
1. np =
2. n(1 p) =
3. N =
which is ? ✓
which is ? ✓
which is ? ✓
If no N is given in the problem, use 1000000](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd57b7bd0-b370-4b8a-8394-d17f179298c2%2Fd5144bd7-cba6-4386-8a20-44df429f9bed%2Fwc3goxi_processed.png&w=3840&q=75)
Transcribed Image Text:H: HYPOTHESES
Fill in the correct null and alternative hypotheses:
Ho: ? ? ✓
HA: ? ✓
A: ASSUMPTIONS
? ✓
Since Select an answer information was collected from each object, what conditions do we need to
check?
Check all that apply.
On > 30 or normal population.
n(1-p) ≥ 10
Oo is unknown.
Oo is known.
Onp > 10
ON > 20n
Check those assumptions:
1. np =
2. n(1 p) =
3. N =
which is ? ✓
which is ? ✓
which is ? ✓
If no N is given in the problem, use 1000000
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