with detailed solution
Question 1 2 Points "The water bills for residents in Davao City have a mean of Php4263 and a standard deviation of Php470. Random samples of 44 water bills are drawn from this population, and the mean of each sample is determined. What is the mean of the mean of the sampling distribution." 470 B 4263 C 97 44 Question 2 2 Points "The water bills for residents in Davao City have a mean of Php4709 and a standard deviation of Php366. Random samples of 132 water bills are drawn from this population, and the mean of each sample is determined. What is the mean of the mean of the sampling distribution." A 132 B 36 366 D 4709Question 3 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 998 hours and a standard deviation of 49 hours. Random samples of 42 bulbs are drawn from this population, and the mean of each sample is determined. What is the standard error of the mean of the sampling distribution?" 866 B 7.56 C 42 D 49 Question 4 2 Points "The water bills for residents in Davao City have a mean of Php4762 and a standard deviation of Php260. Random samples of 30 water bills are drawn from this population, and the mean of each sample is determined. What is the standard error of the mean of the sampling distribution." 30 B 260 C 47.47 D 4762Question 7 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 815 hours and a standard deviation of 97 hours. Find the probability that a random samples of 21 bulbs will have an average life of greater than 777 hours." A 0.9641 B 0.4801 C 0.0359 D 0.5199 Question 8 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 804 hours and a standard deviation of 61 hours. Find the probability that a random samples of 31 bulbs will have an average life of greater than 776 hours." 0.9948 B 0.0853 C 0.0052 0.9147Question 5 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 807 hours and a standard deviation of 60 hours. Find the probability that a random samples of 30 bulbs will have an average life between 795 and 819 hours." A 0.8643 B 0.1357 C 0.7287 0.1357 Question 6 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 780 hours and a standard deviation of 63 hours. Find the probability that a random samples of 16 bulbs will have an average life between 785 and 822 hours." A 0.0038 B 0.6255 C 0.9962 D 0.3707Question 9 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 805 hours and a standard deviation of 79 hours. Find the probability that a random samples of 41 bulbs will have an average life of less than 780 hours." A 0.4681 B 0.0212 C 0.5319 0.9788 Question 10 2 Points "An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equal to 782 hours and a standard deviation of 67 hours. Find the probability that a random samples of 14 bulbs will have an average life of less than 807 hours." A 0.9671 B 0.0329 0.0808 D 0.9192
