11. [2/5 Points) DETAILS PREVIOUS ANSWERS BBUNDERSTAT12 7.2.017.NVA MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Over...
10. [-14 Points] DETAILS BBUNDERSTAT12 7.2.013.NVA MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The method of tree ring dating gave the following years A.D. for an archatological excavation site. Assume that the population of values has an approximately normal distribution 1264 1264 1194 1306 1268 1316 12751317 1275 (a) Use a calculator with mean and standard deviation keys to find the sample mean year and sample standard deviations. (Round your answers to the nearest whole number.) AD S yr (b)...
7. [7/9 Points] DETAILS PREVIOUS ANSWERS BBUNDERSTAT12 6.5.011.NVA MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Suppose x has a distribution with u = 26 and o = 19. (a) If a random sample of size n = 49 is drawn, find je er og and P(26 sās 28). (Round of to two decimal places and the probability to four decimal places.) My = 26 0x = 2.7143 P(26 28) = (b) If a random sample of size n = 66...
Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the patient's total calcium tests gave the following readings (in mg/dl). Assume that the population of x values has an approximately normal distribution. 10.1 9.6 10.7 9.5 9.4 9.8 10.0 9.9 11.2 12.1 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean reading...
What price do farmers get for their watermelon crops? In the third week of July, a random sample of 43 farming regions gave a sample mean of x = $6.88 per 100 pounds of watermelon. Assume that o is known to be $1.96 per 100 pounds. (a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their watermelon crop (in dollars). What is the margin of error (in dollars)?...
7201 total cakclum tests gave the following readings (in mgjal). Assume that the population of x values has an appreximately normal dstribution. total calcium level below 6 mg/di Recently, the patient's 91 9.2 10.7 85 94 9.8 10.0 9.9 112 121 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean reasirg x and the sample standand devition x-9.99 s (Round your anewers to two decimal places) (b) Find a 99.9% co lower lime...
11. (-/27 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER when a is unknown and the samples of size 230, there are two methods for computing confidence intervals for M. (Notice that, When is unknown and the sample is of size <30, there is only one method for constructing a confidence interval for the mean by using the student's distribution with d.I. -1.) Method 1: Use the Student's distribution with 1.1. This is the method used in the text....
2/4 POINTS PREVIOUS ANSWERS BBUNDERSTAT12 7.2.016. MY NOTES ASK YOUR TEACHER Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs in thousands of dollars) for a random sample of candy stores are given below. Assume that the population...
6. [-/1 Points] DETAILS MENDSTAT15 6.2.039.NVA MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Answer the question for a normal random variable x with mean u and standard deviation o specified below. (Round your answer to four decimal places.) u = 1.3 and 0 = 0.16. Find P(1.00<x< 1.10). P(1.00<x< 1.10) = You may need to use the appropriate appendix table or technology to answer this question. Need Help? Talk to a Tutor 7. [-/1 Points] DETAILS MENDSTAT15 6.2.040.NVA MY NOTES...
3. [1/5 Points) DETAILS PREVIOUS ANSWERS ASWSBE14 8.1.003 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question A simple random sample of 90 itens resulted in angle mean of 60. The population standard deviation is a = 15 (a) Compute the 95% confidence interval for the population mean (Round your answers to two decimal places 12.07 X to 6207 x (b) Assume that the same sample nea...
1. [-/1 Points] DETAILS MENDSTAT15 5.2.002. NVA MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider a binomial random variable with n = 9 and p = 0.8. Let x be the number of successes in the sample. Evaluate the probability. (Round your answer to three decimal places.) P(x S 3) You may need to use the appropriate appendix table or technology to answer this question. Need Help? Talk to a Tutor 2. [-/1 Points] DETAILS MENDSTAT15 5.2.003.NVA MY NOTES ASK...