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A sample of 169 is drawn from a certain population. This sample has a mean of 80 and a standard deviation of 10. Find the standard error of the mean.
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The length of pregnancies are normally distributed with a mean of 260 days and standard deviation of 12 days. If 30 women are randomly selected, find the probability that lengths of pregnancy have a mean that is less than 255 days.
a bicycle wheel turns with constant angular accceleration of 0.64 rad/s²:
a) how much time does it take to reach an angular velocity of 8 rad/sec starting from rest?
b) how many revolutions does the wheel turn in this time interval?
1/. A signal is transmitted from a ship and an echo is received from an object below the ship 4 s later. Calculate the distance of the object from the ship if the speed of sound in water is 1400 m/s.
What are the various types of constructors used in object oriented programming? Explain with an example.
Explain the difference between class to basic type conversion and basic to class type conversion
Use basic to class type conversion to covert a long integer value to class datatype
Enter a 4 digit number and display the value at thousands position,hundreds position, tens position and ones position.
Write a program to create a class students having name, id, age. Create a file student.txt and open in append mode. Write the detail of 3 students into a file and read the data from the file and display on screen. Also copy content of this file into another file