Question
In: Statistics and Probability
In a random sample of males, it was found that 26 write with their left hands...
In a random sample of males, it was found that 26 write with their left hands and 214 do not. In a random sample of females, it was found that 66 write with their left hands and 436 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Complete parts (a) through (c) below.
Solutions
Expert Solution
H0: null Hypothesis: P1 
P2
HA: Alternative Hypothesis:P1 < P2
n1= 240
p1 = 26/240 = 0.1083
n2 = 502
p2 = 66/502= 0.1315
The test statistic is given by:
Table of Area Under Standard Normal Curve gives Z = 0.3159
So,
P - value = 0.5 - 0.3159 = 0.1841
Since P - value = 0.1841 is greater than 
= 0.05, the
difference is not significant. Fail to reject null hypothesis.
The data do not support the claim that the rate of left handedness among males is less than that among females.
For =0.05, critical
value of Z = - 1.64.
Since calculated value of Z = - 0.3159 is greater than critical value of Z = - 1.64, the difference is not significant. Fail to reject null hypothesis.
The data do not support the claim that the rate of left handedness among males is less than that among females.
orchestra answered 1 year agoRelated Solutions
In a random sample of males, it was found that 26 write with their left hands...
In a random sample of males, it was found that 26 write with
their left hands and 213 do not. In a random sample of females, it
was found that 64 write with their left hands and 464 do not. Use a
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Complete parts (a) through (c) below.
a. Test the claim using a hypothesis test.
Consider the first sample...
In a random sample of males, it was found that 26 write with their left hands...
In a random sample of males, it was found that 26 write with
their left hands and 216 do not. In a random sample of females, it
was found that 64 write with their left hands and 455 do not. Use a
0.01 significance level to test the claim that the rate of
left-handedness among males is less than that among females.
Complete parts (a) through (c) below.
a. Test the claim using a hypothesis test.
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In a random sample of males, it was found that 26 write with their left hands...
In a random sample of males, it was found that 26 write with
their left hands and 217 do not. In a random sample of females, it
was found that 61 write with their left hands and 438 do not. Use a
0.01 significance level to test the claim that the rate of
left-handedness among males is less than that among females. Find
the test statistic Z to two or more decimals and the P-value to
three or more.
In a random sample of males, it was found that 26 write with their left hands...
In a random sample of males, it was found that
26
write with their left hands and
214
do not. In a random sample of females, it was found that
62
write with their left hands and
438
do not. Use a
0.05
significance level to test the claim that the rate of
left-handedness among males is less than that among females.
Complete parts (a) through (c) below.
a. Test the claim using a hypothesis test.
Consider the first sample...
In a random sample of males, it was found that 25 write with their left hands...
In a random sample of males, it was found that 25 write with
their left hands and 223 do not. In a random sample of females, it
was found that 68 write with their left hands and 442 do not. Use a
0.01 significance level to test the claim that the rate of
left-handedness among males is less than that among females.
Complete parts (a) through (c) below.
(a.) Test the claim using a hypothesis test.
Consider the first sample...
In a random sample of males, it was found that 27 write with their left hands...
In a random sample of males, it was found that 27 write with
their left hands and 223 do not. In a random sample of females, it
was found that 72 write with their left hands and 464 do not. Use a
0.01 significance level to test the claim that the rate of
left-handedness among males is less than that among females.
Complete parts (a) through (b) below.
a) Identify the test statistic. Z= ___
b) Identify the P-value =...
In a random sample of males, it was found that 23 write with their left hands...
In a random sample of males, it was found that 23 write with
their left hands and 217 do not. In a random sample of females, it
was found that 65 write with their left hands and 455 do not. We
want to use a 0.01 significance level to test the claim that the
rate of left-handedness among males is less than that among
females. Test the claim using a hypothesis test.
Group of answer choices
A.P value=0.0926; fail to...
In a random sample of males, it was found that 28 write with their left hands...
In a random sample of males, it was found that 28 write with
their left hands and 225 do not. In a random sample of females, it
was found that 62 write with their left hands and 441 do not. Use a
0.05 significance level to test the claim that the rate of
left-handedness among males is less than that among females.
Complete parts (a) through (c) below.
In a random sample of males, it was found that 1919 write with their left hands...
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Consider the first sample...
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In a random sample of males, it was found that 21 write with
their left hands and 219 do not. In a random sample of females, it
was found that 64 write with their left hands and 437 do not. Use a
0.01 significance level to test the claim that the rate of
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b) identify p-value
c) the 90% confidence...
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