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UNO [17]
3 years ago
5

A computer program is tested by 5 independent tests. If there is an error, these tests will discover it with probabilities 0.1,

0.2, 0.3, 0.4, and 0.5, respectively. Suppose that the program contains an error. What is the probability that it will be found
Computers and Technology
1 answer:
Svetllana [295]3 years ago
5 0

Answer:

0.8488

Explanation:

Let E =error found by test 1

Let F=error found by test 2

Let G=error found by test 3

Let H=error found by test 4

Let I= error found by test 5

Given P(E)=0.1, P(F)=0.2, P(G)=0.3, P (H)= 0.4, P (I)=0.5

therefore P(notE)=0.9, P(notF)=0.8, P(notG)=0.7, P(not H)=0.6, P (notI)=0.5

Tests are independent P(not E & not F &not G & not H & not I=P(notE)*P(notF)*P(notG)*P (notH)*P (not I) =0.9*0.8*0.7*0.6*0.5 =0.1512

P(found by at least one test)= 1- P(not found by any test)=1-P(not E& not F & not G & not H & not I ) = 1-0.1512 = 0.8488

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Cerrena [4.2K]
Answer: WebMD

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3 0
3 years ago
Write a bool function isPalindrome that takes one string parameter and returns true if that string is a palindrome and false oth
kkurt [141]

Answer:

Here is the bool function isPalindrome:

bool isPalindrome(string s)

{  bool palindrome;      

 int j;

 int len = s.length();

 for (int i =0, j= len-1; i < len/2; i++, j--)  

   if (s[i] == s[j])

     palindrome = true;  

   else

     palindrome = false;

 return palindrome; }

Explanation:

The bool function isPalindrome takes a string as parameter and returns true if the string is a palindrome or false if the string is not palindrome. The string variable s holds the string value. In function isPalindrome, there is a bool type variable palindrome. bool is a data type which is used to hold values true or false which is then stored in the palindrome variable.

Next it is being found that how many characters are there in the input string using length() function which returns the length of the string. The length of the string is stored in int type variable len.

Next the for loop starts which has two variables i and j where i starts at 0 position of the input string and j starts at the last position of the string. These two variables move or traverse along the string this way. i variable stops when half the length of the input string is reached. At the end of every iteration i moves forward by the increment of its value to 1 and j moves backwards by the decrement  of its value to 1.

Every the body of  the loop executes, there is an if condition in the body of the loop which checks if the string is a palindrome. This is checked by matching the character at position/index i with the character at position j of the string. This will continue character by character until the i reached half the length of the input string and if every character in i was matched to every character in j then palindrome = true; statement is executed which returns true as the string is a palindrome otherwise palindrome = false; is returned as the string is not a palindrome.

For taking input string from the user and to check if the function isPalindrome() works correctly a main() function is written which takes input string from the user and reads in variable str calls isPalindrome() function. If the string is palindrome then the cout statement in main() function prints the message: String is a palindrome and if the input string is not a palindrome the the following message is displayed in the output screen: String is not a palindrome

int main()

{

string str;

cout<<"Enter a string: ";

cin>>str;

if(isPalindrome(str))

cout<<"String is a palindrome";

else

cout<<"String is not a palindrome";

}

The screenshot of the program along with the output is attached.

7 0
3 years ago
What is stored in a source file, an object file, and his executable file?
neonofarm [45]
A source file has source code, what a human understands. It isn't compiled or linked.

An object file has compiled, but not linked intermediary code.

An executable file has compiled and linked code which is executable.
6 0
3 years ago
If you store a binary tree in an array the index of the right child and the left child is computed by _______
Fiesta28 [93]

Answer:

left child = 2 index +1 & right child = 2 index + 2

Please Mark Brainliest If This Helped!

3 0
2 years ago
Use list indexing to print the last element of the list literal value.
AnnZ [28]

Answer:

print(["Not me", "Nor me", "Print me!"][2])

Explanation:

Given

print(["Not me", "Nor me", "Print me!"])

Required

Print last element of the list literal value

The implication of this question is to print "Print me!"

We start by analysing the given list.

The given list has 3 elements

But because indexing of a list starts from 0, the index of the last element will be 3 - 1 = 2

So, to print the last element, we simply direct the print statement to the last index.

This is done as follows

print(["Not me", "Nor me", "Print me!"][2])

The [2] shows that only the literal at the last index will be printed.

This means that the string "Print me!" will be printed.

The code can also be rewritten as follows

mylist = ["Not me", "Nor me", "Print me!"]

print(mylist[2])

Here, the first line stores the list in a variable.

The second line prints the last element of the list literal value which is "Print me!"

4 0
3 years ago
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