SOLUTION: It is known that 40% of adult possess education paper qualifications but among a random sample of 200 textile workers only 59 do so. Have we reason to believe that the proportion i

Question 1183122: It is known that 40% of adult possess education paper qualifications but among a random sample of 200 textile workers only 59 do so. Have we reason to believe that the proportion in this occupational group is less than that of adults as a whole? To test this hypothesis the p value is equal to
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
1-sample proportion test with
Ho:p >=0.40
Ha: p < 0.40
z=(p hat-p)/sqrt(p*(1-p)/n)
=(0.295-0.40/sqrt(.4*.6/200)
=-0.105/0.0346
=-3.03
p-value for a one way test is 0.0012 (left side of a curve with area from -oo to -3.03
would reject typical Ho with common critical values.

RELATED QUESTIONS
is known that 40% of adult possess education paper qualifications but among a random... (answered by robertb)

Using the poisson distribution cloth is woven continously in a textile mill and from... (answered by Boreal)

according to a transport sector conference in New zealand, 75% of workers drive to work.... (answered by stanbon)

A local county has a very active adult education venue. A random sample of the population (answered by Boreal)

The probability that an adult possesses a credit card is 0.73. A researcher selects four... (answered by Boreal)

The probability that an adult possesses a credit card is 0.79. A researcher selects four... (answered by Boreal)

A random sample of 100 adult workers, 60 men and 40 women, is selected in a large... (answered by stanbon)

A laboratory claims that the mean sodium level, μ, of a healthy adult is 140 mEq per... (answered by Boreal)

It is known that 70% of Democrats like music. What is the probability that in a random... (answered by stanbon)