Answer:
The required null and alternative hypotheses are and respectively.
Step-by-step explanation:
Consider the provided information.
If there is no statistical significance in the test then it is know as the null which is denoted by , otherwise it is known as alternative hypothesis which denoted by .
The claim is: The proportion of crimes committed after dusk will fall below the current level of 0.84
The null hypothesis is The proportion of crimes committed after dusk will same as the current level of 0.84.
Therefore,
Hence, the required null and alternative hypotheses are and respectively.
Answer:
The mean waiting time of all customers is significantly more than 3 minutes, at 0.05 significant level
Step-by-step explanation:
Step 1: State the hypothesis and identify the claim.
Step 2: We calculate the critical value. Since we were not given any significant level, we assume , and since this is a right tailed test, the critical value is z=1.65
Step 3: Calculate the test statistic.
Step 4:Decide. Since the test statistic , 2 s greater than the critical value, 1.65, and it is in the critical region, the decision is to reject the null hypothesis.
Step 5: Conclusion, there is enough evidence to support the claim that the mean is greater than 3
Answer:the 2nd one is 30000 divided by 2000 is 15
Step-by-step explanation: so 15 minutes til they crash the plane
Answer:
table 3 and table 12 show a proportional relationship
When you have
you can solve the equation by multiplying both sides by 1/4. Then simplify.