Jamie has 105 pieces of candy leftover from Halloween. She would like to distribute them evenly to the 7 kids on her block. Writ
2 answers:
For this case we have that the variable "x" represents the amount of candies that each child touches.
If there are a total of 105 candies and they want to be distributed equally among 7 children, then we have the following expression:
Thus, the correct option is:
<em>"x = one hundred five divided by seven"</em>
Answer:
OPTION B
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Answer:
If we compare the p value and the significance level given we see that
so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that the true mean is higher than 190
Step-by-step explanation:
Data given and notation
represent the mean
represent the sample standard deviation for the sample
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
t 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 higher than 190, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:
(1)
t-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:
P-value
The first step is calculate the degrees of freedom, on this case:
Since is a one side test the p value would be:
Conclusion
If we compare the p value and the significance level given we see that
so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that the true mean is higher than 190
9514 1404 393
Answer:
x ≈ -4.9
Step-by-step explanation:
There are no algebraic methods for solving this equation. The solution is nicely found by a graphing calculator.
x ≈ -4.9
_____
Using iterative techniques, the calculator can give an answer to the full precision available. It is ...
x ≈ −4.91733286844
