To solve this problem, we make use of the formula for
Confidence Interval:
Confidence Interval = X ± z * σ / sqrt (n)
where X is the mean value, z is the z score which is taken
from the standard tables, σ is the standard deviation, and n is the number of
samples
z = 1.645 (at 90% Confidence Level)
Substituting the values into the equation:
Confidence Interval = 94 ± 1.645 * 12 / sqrt (70)
Confidence Interval = 94 ± 2.36
Confidence Interval = 91.64, 96.36
Therefore at 90% confidence level, the blood pressure
reading ranges from 91.64 mmHg to 96.36 mmHg.
Answer:
8x
Step-by-step explanation:
x · 8
8x
Answer:
Every 10th product in the line is selected
Step-by-step explanation:
Convenience sampling also available sampling, or nearest in reach sampling.
it is a type of non-probability sampling that involves the sample being drawn from a population that is in reach or that is easily at hand.
example. A questionnaire being distributed to people met in a mall.
for the manufacturing company in question, the first 10 product in line were the first set of product the machine will produce (at hand).
it is normally use to test run the operation of the machine.
Answer:
The answer of your question is: x = 5
Step-by-step explanation:
It's and isosceles triangle then ∠ A = ∠C
73 = 8y - 7
8y = 73 + 7
8y = 80
y = 80 / 8
y = 10
∠ C = 8(10) -7
∠ C = 73°
The sum of the internal angles in a triangle equals 180°
∠A + ∠B + ∠C = 180°
73° + (6x + 4) + 73° = 180° Substitution
6x + 4 = 180 - 73 - 73
6x =34 - 4
6x = 30
x = 30 / 6
x = 5
