Question Which of the following statements are true? Choose the correct answer A. A point estimate of a population parameter e is a single number that can be regarded as a sensible value of e. B. A point estimate of a population parameter e is obtained by selecting a suitable statistic and computing its value from the given sample data. The selected statistic is called the point estimator of e. C. The sample mean is a point estimator of the population mean D. The sample variance S is a point estimator of the population variance o E. All of the above statements are true.

An economist reports that 841 out of a sample of 2,900 middle-income American households actively participate in the stock market. a. Construct a 90% confidence interval of the proportion of middle-income Americans who actively participate in the stock market. Use Table 1. (Round your intermediate calculations to 4 decimal places, "z" value to 2 decimal places, and final answers to 3 decimal places.) Confidence interval to b. Can we conclude that the proportion of middle-income Americans that actively participate in the stock market is not 32%? Yes, since the confidence interval does not contain the value 0.32. O No, since the confidence interval does not contain the value 0.32. O Yes, since the confidence interval contains the value 0.32. O No, since the confidence interval contains the value 0.32.

A Family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer than before to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor friend informs them that the last 26 houses that sold in their neighborhood took an average time of 218 days to sell. The realtor also tells them that based on her prior experience, the population standard deviation is 72 days.a. What assumption regarding the population is necessary for making an interval estimate for the population mean? b. Construct the 90% confidence interval for the mean sale time for all homes in the neighborhood.

Write Socket Programming for communication between a Client and a Server. write a client-side code and server-side code for TCP protocol only. two files: • one file for server-side; name it as, server tcp.c and another file for client-side code, e.g., client tcp.c In order to run the both the client and server code on the same host, use a localhost IP address for both client and server (same address). In the client code after the connection is made , send 50 packets to the server side. While writing the packet content, write your name as a string and copy as a content in the packet to send over the socket to the server. While sending 50 packets add a sleep time less than 0.1 second. You can choose any number, e.g., 0.025, 0.05, 0.09, 0.075 etc. choose any packet size (1500 bytes) less than the TCP MTU ize that would fit your full name as a string. On the server side (receiver), print the packet content for first 10 packets. Explain which programming software is used and how to run both the client and server using the ip address. In C language

A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer than before to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor friend informs them that the last 26 houses that sold in their neighborhood took an average time of 75 days to sell. The realtor also tells them that based on her prior experience, the population standard deviation is 8 days. (You may find it useful to reference the z table.) a. What assumption regarding the population is necessary for making an interval estimate for the population mean? - Assume that the population has a normal distribution. - Assume that the central limit theorem applies. b. Construct the 90% confidence interval for the mean sale time for all homes in the neighborhood. Confidence interval - to

Write a program to produce an array of integer random numbers. Yourprogram should find out from the user how many numbers to store. It should then generate and store that many random integers (the random numbers must be between 1 and 999 inclusive). The program should then determine the smallest number, the largest number, and the average of all the numbers stored in the array. Finally, it should print out all the numbers on the screen, five numbers to a line with spaces in between. Once the contents of the array have been printed to screen, display the smallest number, largest number, and average determined previously. You should ensure that your program design in modular.The Random class of Java library (java.util.Random) implements a randomnumber generator. To generate random numbers, you construct an object of q the class Random, and then use the method nextInt(n) which returns a number between 0 (inclusive) and n (exclusive). Eg:import java.util.Random;.....Random generator = new Random();.....//generate a random number between 0 and 99 (inclusive)int nextRand = generator.nextInt(100);Alternatively use Math.random(), which returns a random valuein the range 0.0 to 1.0 (then adjust to the correct range)

Assume that you measured the length of an object as 50 mm using a digital caliber. The measurement was made at 300 + 5 K. What is the actual measurement result? (Resolution of the digital caliber: 0.04 mm, coverage factor: 3, linear thermal expansion coefficients of the digital caliber and the sample are 14*10-6 KP)