Answer:
The null and alternative hypotheses are:


Under the null hypothesis, the test statistic is:

Where:
is the sample mean
is the sample standard deviation
is the sample size


Now, we can find the right tailed t critical value at 0.01 significance level for df = n-1 = 10 - 1 = 9 using the t distribution table. The t critical value is given below:
Since the test statistic is less than the t critical value, we therefore, fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim that the people do better with the new edition.
Answer is 7/12 I know it is because, well I just know it is
It is 5 hours from 10:30am to 3:30pm.
Equate whats inside (arguments)
with base period of sine function
and solve for x to get period,

So the period of the graph of the given function is precisely 2.
Hope this helps :)
The domain is B. -8 ≤ x < 3 and 4 ≤ x < 8