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A large city claims that it provides "free lunch" to more than 30% of its elementary school students. A researcher selects a random sample of 200 students and finds that 72 were getting free lunches. Does the evidence supports the claim at ? = 0.05?
a. State the Null and Alternative Hypotheses: (Identify which hypothesis is the claim)
b. Compute the Test statistic: (Round off correctly)
c. Find the p-value:
d. Make the decision using the Decision Rule. Use the p-value method.
e. Write the Conclusion (in plain English as related to the claim).
Find the P value or an interval containing the P value for the sample test statistic.
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A job placement director claims that the average starting salary for nurses is 24,000.A sample of 10 nurses' salaries has a mean of 23, 450 and a standard deviation of 400. Is there enough evidence to reject the director's claim at 0.05 level of s..
Estimate the proportion of low birth weight infants whose mothers experienced toxemia during pregnancy. Use 95% confidence level.
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