You can buy 2 tickets to school carnival for $9 total. How many tickets can you buy for $27?
1 answer:
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Answer:
Now we can calculate the p value since we are conducting a bilateral test the p value would be:
Since the p value is very low we have enough evidence to reject the null hypothesis that the true means are equal at 5% of significance.
Step-by-step explanation:
Information provided
represent the mean for Miami
represent the mean for Baltimore
represent the population standard deviation for Miami
represent the population standard deviation for Baltimore
sample size selected for Miami
sample size selected for Baltimore
represent the significance level
z would represent the statistic (variable of interest)
represent the p value for the test
Hypothesis to analyze
We want to check if the commiting times are different in the winter for the two cities, so then the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
Since we know the population deviations the statistic for this case is given by:
(1)
Replacing the info provided we got:
Now we can calculate the p value since we are conducting a bilateral test the p value would be:
Since the p value is very low we have enough evidence to reject the null hypothesis that the true means are equal at 5% of significance.