SOLUTION: I really need some help please. I've been working on this problem for two days without any results and have zero idea what to do. Thank you.
Professor Jennings claims that only
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-> SOLUTION: I really need some help please. I've been working on this problem for two days without any results and have zero idea what to do. Thank you.
Professor Jennings claims that only
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Question 755624: I really need some help please. I've been working on this problem for two days without any results and have zero idea what to do. Thank you.
Professor Jennings claims that only 35% of the students at Flora College work while attending school. The dean thinks that the prof. has underestimated the number of students with part-time or full-time jobs. A random sample of 81 students shows that 39 have jobs. Do the data indicate that more than 35% of the students have jobs? (Use a 5% level of significance.) Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Professor Jennings claims that only 35% of the students at Flora College work while attending school. The dean thinks that the prof. has underestimated the number of students with part-time or full-time jobs. A random sample of 81 students shows that 39 have jobs. Do the data indicate that more than 35% of the students have jobs? (Use a 5% level of significance.)
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Ho: p = 0.35
Ha: p > 0.35 (claim)
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p-hat = 39/81 = 0.48
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z(0.48) = (0.48-0.35)/sqrt[0.35*0.65/81)] = 2.4530
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p-value = P(z > 2.4530) = normalcdf(2.4530,100) = 0.0071
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Conclusion: Since the p-value is less than 5% reject Ho.
The test results support the claim.
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Cheers,
Stan H.
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