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One? study, based on responses from 1,025 randomly selected? teenagers, concluded that 43?% of teenagers cite grades as their greatest source of pressure. Use a 0.05 significance level to test the claim that fewer than half of all teenagers in the population feel that grades are their greatest source of pressure.
Formulate the null and alternative hypotheses. Choose the correct answer below.
H0?: p=0.5
Ha?: p<0.5
Find the test statistic.
z =
Find the? P-value for the found test statistic.
?P-value =
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Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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