2. A company claims that 90% of its deliveries arrive on time. You take a sample of 74 deliveries, of which only 59 arrive on time. Is this enough evidence to say that the true percentage of on-time deliveries is lower than claimed? (Use a = .10)

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Solve by hand please (no excel) You are missing a few pieces here. You need to draw and shade the distribution curve. We do not "keep" the Ho, but rather "Do not Reject Ho". Also, make sure to write the full sentence...

1. Explain the concept of a hypothesis test, and why it is used in
research and science.
2. Conduct a hypothesis test, by executing the following steps:
a. Identifying the correct type of test.
b. Creating the two hypotheses.
c. Organizing the information from the problem.
d. Calculating any missing statistics.
e. Finding the P-value on your calculator.
f. Making the decision of the test.
g. Writing a sentence which embodies your decision.
3. Differentiate between a 1-sided and 2-sided test.
4. Differentiate between a 1-proportion z-test and 2-proportion z-test.
Transcribed Image Text:1. Explain the concept of a hypothesis test, and why it is used in research and science. 2. Conduct a hypothesis test, by executing the following steps: a. Identifying the correct type of test. b. Creating the two hypotheses. c. Organizing the information from the problem. d. Calculating any missing statistics. e. Finding the P-value on your calculator. f. Making the decision of the test. g. Writing a sentence which embodies your decision. 3. Differentiate between a 1-sided and 2-sided test. 4. Differentiate between a 1-proportion z-test and 2-proportion z-test.
2. A company claims that 90% of its deliveries arrive on time. You take a sample of 74
deliveries, of which only 59 arrive on time. Is this enough evidence to say that the true
percentage of on-time deliveries is lower than claimed? (Use a = .10)
Transcribed Image Text:2. A company claims that 90% of its deliveries arrive on time. You take a sample of 74 deliveries, of which only 59 arrive on time. Is this enough evidence to say that the true percentage of on-time deliveries is lower than claimed? (Use a = .10)
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