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STATS Multiple Choice Questions




Question;1) The accounting department at Weston Materials, Inc.;manufacturer of demountable GARAGE indicates that two workers take an average;of 32 hours with a standard deviation of two hours to build a carport. Assume;the assembly times are normally distributed. (Approximate to 2 decimal places)1;Determine the value of z for 29 hours.2 Determine the value of z for 34 hours.3;What percentage of GARAGES requires between 29 and 34 hours to be armed?;2) The probability that a golfer makes hole in a certain;type of pitch is 0.2. If you try it 5 times, calculate the probability that it;guesses not any time. (approximated to four decimal places)a. 0.4569b. 0.3277c.;0.5000d. 1.587;3) One of the characteristics of a probability distribution;is as follows:a. the sum of all the probabilities of the outcomes is 1b. the;results are consistentc. the probabilities are the result particularly from 0;to 3d. results are dependent;4) A list of possible outcomes of the experiment and the;corresponding probability is called:a. probability distributionb. random;variablec. contingency tabled. frequency distribution;5) Which of the following statements is NOT a condition of;binomial distribution?;a. must be at least 4 testsb. only two possible outcomes;success or failurec. constant probability of a successd. independent tests;6) In the sentence, you are interested in the number of;heads in launching 5 coins in the air, the experiment is;a. airb. 5 coins launch airc. number of headsd. the number;of coins7) Given the following probability table, find the average (use two;decimal points for answering approximate)x P (x) half;8) Each new employee of a department store is provided with;an identification. Personnel files are arranged in sequence starting with the;number 0001 employee To poll employees about their work shift, 0153. first;chose the numbers 0253, 0353, 0453, were chosen so forth, become sample;members. Such sampling will receive name:a. simple random samplingb. stratified;samplingc. systematic samplingd. cluster sampling;9) The difference between the binomial and hypergeometric;distributions is;a. number of resultsb. successes and failuresc. changes the;probability of success in each triald. independence of events;10) A continuous random variable can assume an infinite;number of given range values.TrueFalse;11) According to a State Insurance Agency, a family of 4 members;spends 400 to $ 3,800 a year on all types of insurance. Sunponga that the money;spent has a uniform distribution.1.What is the average amount spent on;insurance?2 If a family is chosen at random, ?Cua is the probability that spend;less than $ 2000 per year?;12) The standard normal probability distribution is unique;it has mean 0 and standard deviation of 0.5.TrueFalse;13) Which of the following examples is NOT an example of a;discrete probability distribution?;a. the number of electrical appliances in a houseb. if the;neighbor has no pool orc. the purchase price of a bicycled. the number of rooms;in a hotel;14) A random variable is the result of;a. random experimentb. a mathematical exercisec. a;questiond. a survey;15) In a Poisson distribution, it is true that;a. the probability of success is always greater than.5b.;the number of tests is less than 0.5c. always contains a contingency tabled.;The mean and variance are equal;16) Which of the following statements is not correct in;regard to the normal probability distribution?;a. It is based on two observationsb. The mean and median are;equalc. is symmetricd. it is defined by its mean and standard deviation;17) You divide a neighborhood blocks to survey political;carcater. Then randomly select 12 blocks and focuses its survey in these 12;blocks. Such sampling is;a. cluster samplingb. stratified samplingc. systematic;samplingd. simple random sampling;18) A 0.5% of those who communicate telesales department of;Sony hear the busy line. If there have been 1200 calls, what is the probability;that 5 people have listened to a busy tone? Media PoissonA -.0016B 0C 0.1606D;0.00016;19) A discrete random variable can assume any number of;results, clearly states.TrueFalse;20) Fill in the blank. In prayer, the liters of gasoline;consumed by 15 different cars in a certain path of work, the random variable is;continuous variable.;21) The following questions are intended to confirm that you;know to find the Z values in the probability table.;Read the question carefully.;1 The probability for smaller values at Z = -0.63 is;a. 0.2676 or 26.76%b. 0.2643 or 26.43%c. 0.2611 or 26.11%;22) If the standard normal distribution is used, which of;the following is the probability of obtaining a z greater than 1.66?;a. 0.99515b. 0.5000c. 0.0485d. 0.4515;23) Classify the following variables in continuous or;discrete.;a. cars with mechanical problems on a "dealer")b.;temperature of 10 patients in the emergency room (c. homes with roof damage as;a result of Hurricane Ike (d. 15 time marathon runners will arrecostao. (e.;internet usage time for 25 young people aged 15 to 17 years.


Paper#54645 | Written in 18-Jul-2015

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