Answer:
Either or
Step-by-step explanation:
Given that : one angle is greater than another. Let the two angles be represented by a and b. Since one angle is
greater than another, then:
b = a +
But;
a + b = (sum of angles on a straight line)
a + a + =
2a = -
a =
b = +
=
Therefore the measures of all angles formed by the lines is either or
.
Answer:
The probability is
Step-by-step explanation:
From the question we are told that
The mean is
The standard deviation is
The sample size is n = 25
The combined resistance is
Generally the sample mean is mathematically represented as
=>
=>
Generally the standard error of the mean is mathematically represented as
=>
=>
Generally the probability that a random sample of 25 of these resistors will have a combined resistance of less than 1010 ohms is mathematically represented as
From the z table the area under the normal curve to the left corresponding to 1 is
Answer:
Step-by-step explanation:
Given that confidence level is 95% and sample mean is within 10 minutes of the population mean. i.e. margin of error = 10
Std deviation of population= 211 minutes
Margin of error = Z critical * std error
Std error = sigma/sq rt n =
Hence we have
\frac{211}{\sqrt{n} }
The minimum sample size is 1710
a) There may not be 1,809 computer users to survey