Quick Answer Fast!!!!! five of the six tempstures for one day in june were 67, 72, 82, 79, and 80. If the mode of this data set
1 answer:
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Answer:
t = 2.5 s
Step-by-step explanation:
Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Its equation is :
The above equation is a quadratic equation. The general equation is :
Here, a = 16, b = 38.8 and c = 3
The solution of quadratic equation is given by :
So, at t = 2.5 s the balloon is in air.
Answer:
For this case we don't have the significance level provided but we know the final conclusion and on this case is not reject the null hypothesis, so that means :
Where represent the p value for this test.
So then we can't conclude that we have a significant difference from the specified value of 675 for the true mean.
Step-by-step explanation:
Data given and notation
represent the sample mean
represent the population standard deviation for the sample
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
z would represent the statistic (variable of interest)
represent the p value for the test (variable of interest)
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to check if the mean is equal to 675 or no, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
If we analyze the size for the sample is = 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:
(1)
z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".
Calculate the statistic
We can replace in formula (1) the info given like this:
For this case we don't have the significance level provided but we know the final conclusion and on this case is not reject the null hypothesis, so that means :
Where represent the p value for this test.
So then we can't conclude that we have a significant difference from the specified value of 675 for the true mean.