Answer: look it up
Step-by-step explanation:
Answer:
a) Mean = 382.3 psi
Standard deviation = 20.8 psi
b) 392.7 psi
c) P(X<400)=0.8026
Step-by-step explanation:
a) The population mean can be estimated as equal to the mean of the sample, and the population standard deviation can be estimated from the sample standard deviation:
b) We start by searching for the z-value for the 95th percentile. This value is
z=1.645:
Then, the strength value below which 95% of all welds will have their strengths is:
c) We calculate the probability of X being equal or less than 400 as:
Please retype your question for easy understanding
The numbers are 7 and 10 if the sum of two positive integers is 17 and the smaller integer is subtracted from five times the larger, the result is 43.
<h3>What is a linear equation?</h3>
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
Set up a linear system and solve. The sum of two positive integers is 17.
When the smaller integer is subtracted from five times the larger, the result is 43.
Let the numbers x and y:
x + y = 17
5y - x = 43 ( let x < y)
Solving the above two linear equations in two variables:
x = 17 - y
5y - (17 - y) = 43
5y - 17 + y = 43
6y = 60
y = 10
x = 17 - 10 = 7
Thus, the numbers are 7 and 10 if the sum of two positive integers is 17 and the smaller integer is subtracted from five times the larger, the result is 43.
Learn more about the linear equation here:
brainly.com/question/11897796
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24÷6=4
it should be 4 out of 24 times
