0 Question 11 v 0/1 pt 5 3 0 Details A population has parameters / = 232.3 and o = 52.1. You intend to draw a random sample of size n = 135. What is the mean of the distribution of sample means? = What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.)0 Question 9 v B 0/1 pt '0 3 G) Details Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 13.4 years and a standard deviation of 1.1 years. If the company wants to provide a warranty so that only 0.7% of the quartz time pieces will be replaced before the warranty expires, what is the time length of the warranty? warranty = years Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact zscores or z-scores rounded to 3 decimal places are accepted. 0 Question 8 v IL/ 0/1 pt '0 3 G) Details The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 33 liters, and standard deviation of 5 liters. A) What is the probability that daily production is less than 40.5 liters? Use technology (not tables) to get your probability. Answer: | (Round your answer to 4 decimal places.) B) What is the probability that daily production is more than 21.3 liters? Use technology (not tables) to get your probability. Answer=| | (Round your answer to 4 decimal places.) Warning: Do not use the Z Normal Tables...they may not be accurate enough since WAMAP may look for more accuracy than comes from the table. 0 Question 7 v IL/ 0/1 pt '0 3 G) Details Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with a mean of 5.6-in and a standard deviation of 1.1 -in. Due to nancial constraints, the helmets will be designed to t all men except those with head breadths that are in the smallest 3.2% or largest 3.2%. What is the minimum head breadth that will t the clientele? min =| | What is the maximum head breadth that will t the clientele? max=| | Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact zscores or z-scores rounded to 3 decimal places are accepted. 0 Question 6 v IL/ on pt '0 3 G) Details The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.944 g and a standard deviation of 0.306 g. Find the probability of randomly selecting a cigarette with 0.57? g of nicotine or less. 2 P(X:: 0.577 g) =| Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact zscores or z- scores rounded to 3 decimal places are accepted. Question 5 E1 on pt '0 3 G) Details About 5% of the population has a particular genetic mutation. 700 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 700. Round your answer to three decimal places :l . Question 3 > 0/1 pt 1 3 0 Details The table summarizes results from 980 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? Yes No Yes 41 69 No 224 646 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated or the driver was intoxicated. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob = %Question 2 > 0/1 pt 3 0 Details Probability Scores 0.1 0.2 4 0.1 8 0.05 12 0.2 13 0.35 14 Find the expected value of the above random variable.0 Question 1 v B 0/1 pt '0 3 G) Details A group of people were asked if they had run a red light in the last year. 213 responded "yes", and 357 responded "no". Find the probability that if a person is chosen at random, they have run a red light in the last year. :l Give your answer as a fraction or decimal to 4 decimal places