Matthew's first 7 tests in geometry class this year were 82, 78, 81, 89, 79, 92, and 87, respectively. What is the
2 answers:
Answer : The mean score of Matthew's 7 geometry tests is, 84
Step-by-step explanation :
Mean : It is determine by adding all the numbers then divided by how many numbers there are.
As we are given that the set of data:
82, 78, 81, 89, 79, 92, 87
Now we have to determine the mean.
Sum of outcomes = 82 + 78 + 81 + 89 + 79 + 92 + 87 = 588
Therefore, the mean score of Matthew's 7 geometry tests is, 84
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Answer:
Option B)
Step-by-step explanation:
We are given the following in the question:
Hypothesis:
The doctors and u=instructor claims that practicing yoga reduces blood pressure and hence is beneficial to people.
Population mean, μ = 140 mm
Sample mean, = 139 mm
Sample size, n = 51
Sample standard deviation, s = 5 mm
Thus, we can design the null hypothesis and alternate hypothesis as
The null hypothesis states that the population have a blood pressure of 140 mm. The alternate hypothesis states that yoga reduces the blood pressure and the sample has a blood pressure less than 140 mm.
Thus, the correct answer is
Option B)