For the multiple choice questions, circle the best answer If the size of a randomly selected...
Please give explanation................................................. Multiple Choice. Select the best response 1. An estimator is said to be consistent if a. the difference between the estimator and the population parameter grows smaller as the sample b. C. d. size grows larger it is an unbiased estimator the variance of the estimator is zero. the difference between the estimator and the population parameter stays the same as the sample size grows larger 2. An unbiased estimator of a population parameter is defined as...
1. Three randomly selected households are surveyed. The numbers of people in the households are 3, 4 and 11. Assume that samples of size n=2 are randomly selected with replacement from the population of3, 4, and 11. Listed below are the nine different samples. Complete parts (a) through (c).3,3 3,4 3,11 4,3 4,4 4,11 11,3 11,4 11,11a. Find the variance of each of the nine samples, then summarize the sampling distribution of the variances in the format of a table...
plz help with all questions 180-2100 I. Multiple-choice (Circle the letter of your answer): = 100 and (1) For a continuous random variable 1, the population mean and standard deviation are o 20 respectively. the mean jy and the standard deviation og of the sample mean for a random sample of 16 items from this population are ( 5 0.05) (A) Pa = 25, ; 20 (B) P = 100, -20 (C) = 25,0 = 5 (D) Hg = 100,...
The batteries produced in a manufacturing plant have a mean time to failure of 30 months, with a standard deviation of 2 months. I select a simple random sample of 400 batteries produced in the manufacturing plant. I test each and record how long it takes for each battery to fail. I then compute that the average failure time of the 400 batteries is 29.9 months with a standard deviation of 2.15 months. In this scenario, the value 29.9 is:...
Suppose randaen tample of size 52 is selected from a population with o·11. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The population size is infinite (to 2 decimals) b. The population size is N 50,000 (to 2 decimals) c.The population size is N-5000 (to 2 decimals). d. The population size is N 500 (to 2 decimals). the EAI sampling problem, the population...
Test No. 3 ( (Form B)Math 100 Spring 2019 I. Multiple-choice (Circle the letter of your answer): Questions No. 1 through No. 5 refer to the following: A continuous s has a normal distribution with the mean of 80 and standard deviation of 15 random variable x (1) The mode of the variable s is A 80 (B) 15 (C) 40 (D) Unknown (2) The z-score for the mode of x : (A) I (3) The p (B) 0.S ity...
Which of the following statements is true about the standard deviation of X? A. It increases as the sample size n increases. B. It decreases as the sample size n increases. C. It changes each time a new sample is draw D. It does not change as the sample size n increases The standard deviation of the sampling distribution for a sample mean depends on the value(s) of A. neither the sample size nor the population standard deviation B. the...
The amounts of time employees at a large İfthe sample size isn#22, find the mean and standard deviation of the distribution of sample means. The mean of the distribution of sample means is(Type an integer or a decimal.) The standard deviation of the distribution of sample means is work each day are normally distributed, with a mean of 7.5 hours and a standard deviation of 0.32 hour. Random samples of size 22 and 35 are drawn from he (Round to...
please answer correctly and answer all questions.. this is revision question... 7. Which of the following is BEST graphical method for describing categorical data? A. Bar chart B. Histogram C.Box-plot D. Pareto chart 8. Which of the following is NOT property of the variance? A. It measures the amount of spread or variability of observation from mean B. Standard deviation is square root of variance C. Normally used for describing measure of dispersion during reporting research data D. It is...
A sampling distribution is constructed based on a sample size of 25. If the sampling distribution has a mean of 500 and a standard error of 15, what is the standard deviation of the original comparison population? A. 60 B. 75 C. 30 D. 50