Answer:
Test statistic = 1.3471
P-value = 0.1993
Accept the null hypothesis.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 4
Sample mean,
= 4.8
Sample size, n = 15
Alpha, α = 0.05
Sample standard deviation, s = 2.3
First, we design the null and the alternate hypothesis
We use two-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have

Now, we calculate the p-value.
P-value = 0.1993
Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept it.
Answer:
The answer is "99.82% and 86.99%".
Step-by-step explanation:
In point a:
In point b:

Answer:
6+6=12 cm
4+4=8 cm
6+6= 12 cm
Add all together and it equals 32
Step-by-step explanation:
Answer: 65 people completed graduate school.
Step-by-step explanation:
25% of 260 is 65.
Answer:
1. the discriminant is 4
the number of solutions 0
solutions 0
2.the discriminant is 0
i couldn't find any solutions
Step-by-step explanation: