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sergejj [24]
2 years ago
8

An online article in 2001 described a study in which twelve sixth-grade students who had not previously played chess participate

d in a program where they took chess lessons and played chess daily for 9 months. Each student took a memory test (the Test of Cognitive Skills) before starting the chess program and again at the end of the 9 month period. Data and computed differences are given in the accompanying table. The author of the article proposed using these data to test the theory that students who participated in the chess program tend to achieve higher memory scores after completion of the program.
Computers and Technology
1 answer:
ipn [44]2 years ago
6 0
Bdbxhdhdhdbxbdhdhxhxhdhdhdhdhdhdhdhdhdbdhdhdhdhdhdhrhrhrhrhrhdhdhdhdisisieiejjdidieieieieieiei
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The given SQL creates a Movie table with an auto-incrementing ID column. Write a single INSERT statement immediately after the C
Snowcat [4.5K]

Answer:

INSERT INTO Movie(Title,Rating,ReleaseDate)

VALUES("Raiders of the Lost ArkPG",'PG',DATE '1981-06-15'),

("The Godfaher",'R',DATE '1972-03-24'),

("The Pursuit of Happyness",'PG-13',DATE '2006-12-15');

Explanation:

The SQL statement uses the "INSERT" clause to added data to the movie table. It uses the single insert statement to add multiple movies by separating the movies in a comma and their details in parenthesis.

3 0
1 year ago
You are given an array x of string elements along with an int variable n that contains the number of elements in the array. You
Slav-nsk [51]

Answer:

The code to this question can be given as:

Code:

int i,j,count_previous=0,count_next=0; //define variable

for (j=0; j<n; j++) //loop for array

{

if (x[0]==x[j]) //check condition

{

count_previous++; //increment value by 1.

}

}

for (i=0; i<n; i++) //loop

{

for (j=0; j<n; j++)

{

if (x[i]==x[j]) //check condition

{

count_next++; //increment value by 1.

}

}

if (count_previous>count_next) //check condition

{

mode=x[i-1];

}

else

{

mode=x[i];

count_previous=count_next; //change value.

count_next= 0 ; //assign value.

}

}

Explanation:

In the question it is define that x is array of the string elements that is already define in the question so the code for perform operation in the array is given above. In the code firstly we define the variable that is i, j, count_previous, count_next. The variable i,j is used in the loop and variable count_previous and count_next we assign value 0 that is used for check the values of array. Then we define the for loop in this loop we use conditional statement in the if block we check that array of zero element is equal to array of j value then the count_previous is increase by 1. Then we use nested loop It is also known as loop in a loop. In this first loop is used for array and the second loop is used for check array element.In this we use the condition that if array x of i value is equal to array x of j then count_next will increment by 1.Then we use another condition that is if count_previous is greater then count_next then mode of x is decrement by 1. else mode equal to array and count_previous holds the value of count_next and count_next is equal to 0.

8 0
2 years ago
3.14 LAB: Simple statistics for Python
Ad libitum [116K]

Answer:

Following are the correct python code to this question:

n1 = float(input('Input first number: '))#input first number  

n2 = float(input('Input second number: '))#input second number  

n3 = float(input('Input third number: '))#input third number  

n4 = float(input('Input fourth number: '))#input fourth number  

average = (n1+n2+n3+n4)/4 #calculate input number average

product = n1*n2*n3*n4 # calculate input number product

print('product: {:.0f}  average: {:.0f}'.format(round(product),round(average))) #print product and average using round function

print('product: {:.3f}  average: {:.3f}'.format(product,average)) #print product and average value

Output:

Please find the attachment.

Explanation:

The description of the above python code can be defined as follows:

  • In the above python program four variable "n1, n2, n3, and n4" is defined, in which we take input from the user end, and in these user inputs we use the float method, that converts all the input value in to float value.
  • In the next step, two variable average and product are defined, that calculate all input numbers product, average, and hold value in its variable.
  • In the last line, the print method is used, which prints its variable value by using a round and format method.

8 0
2 years ago
If a user was complaining about a "slow computer" due to a program that uses a significant amount of memory, what part or parts
Sedaia [141]

Answer:

The Random-Access Memory (RAM) should be upgraded.

Explanation:

Since the particuar apllication is taking alot of memory space it means that an ugrade/ installation of a bigger RAM would help the system work better while using the program

6 0
1 year ago
Consider a disk that rotates at 3600 rpm. The seek time to move the head between adjacent tracks is 2 ms. There are 32 sectors p
jasenka [17]

Answer:

19.71 ms

Explanation:

The disk rotates at 3600 rpm, hence the time for one revolution = 60 / 3600 rpm = 16.67 ms.

Hence time to read or write on a sector = time for one revolution / number of sectors per track = 16.67 ms / 32 sectors = 0.52 ms

Head movement time from track 8 to track  9 = seek time = 2 ms

rotation time to head up sector 1 on track 8 to sector 1 on track 9 = 16.67 * 31/32 = 16.15 ms

The total time = sector read time +head movement time + rotational delay + sector write time = 0.52 ms + 2 ms + 16.15 ms + 0.52 ms = 19.19 ms

3 0
2 years ago
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