The duration of the show was 3 hours and 15 minutes.
Substitute n with 4 to find d(4):
d(4)=d(4-1)+17
d(4)= d(3)+17=47+ 17= 64
Substitute n with 3 to find d(3):
d(3)= d(2)+17=30+17 =47
Substitute n with 2 to find d(2):
d(2)=d(1)+17= 13+17= 30
The 4th term is 64
Answer:
We need at least 4238 scores.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M
In which is the standard deviation of the population and n is the size of the sample.
How many random IQ scores must be obtained if we want to find the true population mean (with an allowable error of 0.5) and we want 97 percent confidence in the results
We need at least n scores, in which N is found when . So
We need at least 4238 scores.
The percentage of men is more than 72 inches tall will be 0.15866.
<h3>What is the z-score?</h3>
The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.
The z-score is given as
z = (x – μ) / σ
Where μ is the mean, σ is the standard deviation, and x is the sample.
Suppose the mean height for men is 70 inches, with a standard deviation of 2 inches.
Then the percentage of men are more than 72 inches tall will be
z = (72 – 70) / 2
z = 1
The percentage of men is more than 72 inches tall will be
P(x > 72) = P(z > 1)
P(x > 72) = 1 – P(x < 72)
P(x > 72) = 1 – 0.84134
P(x > 72) = 0.15866
Thun, the percentage of men are more than 72 inches tall will be 0.15866.
More about the z-score link is given below.
brainly.com/question/15016913
#SPJ1
Answer:
1. 2(5x-1)
2. 1
Step-by-step explanation: