Answer:
<h2> b) 10 years</h2>
Step-by-step explanation:
1/20 of 700: 1/20•700 = 35
700 + n•35 = 1050
n•35 = 350
n = 10
Answer:
Step-by-step explanation:
We want to determine a 90% confidence interval for the mean salaries of college graduates
Number of sample, n = 40
Mean, u = $62, 200
Standard deviation, s = $11,766
For a confidence level of 90%, the corresponding z value is 1.645. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean +/- z ×standard deviation/√n
It becomes
62200 +/- 1.645 × 11766/√40
= 62200 +/- 1.645 × 1860.4
= 62200 +/- 3060.358
The lower end of the confidence interval is 62200 - 3060.358 =59139.642
The upper end of the confidence interval is 62200 + 3060.358 =65260.358
Therefore, with 90% confidence interval, the mean mean salaries of college graduates is between $59139.642 and $65260.358
For this case we must find the solution of the following inequality:
Applying distributive property on the left side of inequality we have:
Subtracting 25 from both sides of the inequality we have:
Dividing between 5 on both sides of the inequality we have:
Thus, the solution is given by all values of x less than 12.
Answer:
Answer:
2.5cm
Step-by-step explanation:
Radius is half the diameter (length across the circle), which is marked here as 5cm.
Answer:
:-)
<h2>An Isosceles Triangle is a type of triangle that will always have exactly 1-fold reflectional symmetry.</h2>
<h2>Mark me as brainliest ❤️</h2>
