Statistics question and answers for September 22, 2023
- Q Calculate the relative probability of photoelectric absorption for annihilation photons in lead versus aluminum shielding.
- Q To avoid having her hours cut back at work, Bridgett must avoid performing in the lowest 40% of thedistribution of workers at her job. Specifically, typical amount of items manufactured...
- Q A vertical line drawn through a normal distribution at z = -0.72 separates the distribution into two sections. The proportion in the smaller section is 0.2358.TrueFalse
- Q If one score is randomly selected from a normal distribution with = 100 and d = 20, the probability ofobtaining a score greater than X = 73 is p =...
- Q For a normal distribution with = 100 and d=10, the score that separates the top 60% of the distribution from the rest of the distribution is X = 105.TrueFalse
- Q A party host gives a door prize to one guest chosen at random. There are 48 men and 42 women at the party. What is the probability that the prize...
- Q I toss a penny and observe whether it lands heads up or tails up. Suppose the penny is fair, that is, the probability of heads is 1/2 and the probability...
- Q In many settings, the "rules of probability" are just basic facts about percents. A company that offers courses to prepare students for the Graduate Management Admission Test (GMAT) has the...
- Q A bell shaped distribution has u = 40 and a = 8. Using the Empirical Rule Find the proportion of scores that are: (Make a sketch for each problem)a) x...
- Q Let the sample space be S= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Suppose the outcomes are equally likely. Compute the probability of the event E= "an...
- Q A survey of 400 randomly selected high school students determined that 254 play organized sports.(a) What is the probability that a randomly selected high school student plays organized sports?(b) Interpret...
- Q If a person spins a six-space spinner and then flips a coin, describe the sample space of possible outcomes using 1, 2, 3, 4, 5, 6 for the spinner outcomes...
- Q Suppose you toss a coin 100 times and get 51 heads and 49 tails. Based on these results, what is the probability that the next flip results in a head?The...
- Q Take a guess: A student takes a multiple-choice test that has 11 questions. Each question has four choices. The student guesses randomly at each answer. Let X be the number...
- Q In Hawaii, the rate of motor vehicle theft is 503 thefts per 100,000 vehicles. A large parking structure in Honolulu has issued 554 parking permits.(a) What is the probability that...
- Q A binomial experiment has the given number of trials n and the given success probability p.n=15, p=0.2(a) Determine the probability P(7). Round the answer to at least four decimal places.P(7)=...
- Q In western Kansas, the summer density of hailstorms is estimated at about 2.2 storms per 5 square miles. In most cases, a hailstorm damages only a relatively small area in...
- Q The one-time fling! Have you ever purchased an article of clothing (dress, sports jacket, etc.), worn the item once to a party, and then returned the purchase? This is called...
- Q Approximately 7.8% of all (untreated) Jonathan apples had bitter pit in a study conducted by the botanists Ratkowsky and Martin. (Bitter pit is a disease of apples resulting in a...
- Q Statistics released by a reputable traffic safety organization show that on an average weekend night, 1 out of every 10 drivers on the road is drunk. If 400 drivers are...
- Q Work with others and get as much help as you like, but you must submit your own copy of your own work. Any or all problems may be graded. You...
- Q A common practice of airline companies is to sell more tickets for a particular flight than there are seats on the plane, because customers who buy tickets do not always...
- Q Stress at work: In a poll about work, 50% of respondents said that their jobs were sometimes or always stressful. Eight workers are chosen at random.(a) What is the mean...
- Q Stress at work: In a poll about work, 82% of respondents said that their jobs were sometimes or always stressful. Ten workers are chosen at random. Round the answers to...
- Q A binomial experiment has the given number of trials and the given success probability p.n=16, p=0.2(a) Determine the probability P(1 or fewer). Round the answer to at least four decimal...
- Q High blood pressure: A national survey reported that 31% of adults in a certain country have hypertension (high blood pressure). A sample of 21 adults is studied. Round the answer...
- Q Your flight has been delayed: At Denver International Airport, 84% of recent flights have arrived on time. A sample of 12 flights is studied. Round the probabilities to four decimal...
- Q Car inspection: Of all the registered automobiles in a city, 11% fail the emissions test. Fourteen automobiles are selected at random to undergo an emissions test. Round the answers to...
- Q An airliner carries 400 passengers and has doors with a height of 74 in. Heights of men are normally distributed with a mean of 69.0 in and a standard deviation...
- Q If np ? 5 and nq 25, estimate P(at least 11) with n = 13 and p = 0.6 by using the normal distribution as an approximation to the binomial...
- Q In a survey of 1084 people, 725 people said they voted in a recent presidential election. Voting records show that 64% of eligible voters actually did vote. Given that64% of...
- Q Use the chip model to find (-2) x 4. Show process. Your model needs to show (-2) x 4 rather than showing anequivalent expression such as - 2 x 4.Please...
- Q Question 10 (1 point)Sherlock and Mycroft each have a complete deck of cards. Each man picks one cardat random from his deck. Each man has probabilities corresponding to his deck....
- Q John has a bucket with 300 glass marbles in it. 100 of the marbles have 'spots,' the rest of the marbles are one of the solid colors blue or green...
- Q What is the probability that your card is any 'black' card?
- Q Draw one card at random from a well-shuffled deck.What is the probability that the card chosen is a 'spade, just not the ace of spades?Count outcomes carefully.
- Q In a certain large city, 23% of cars are purple. If you pick a car in this city at random, what is the probability that you do NOT get a...
- Q What is the probability that a randomly drawn card is any ace?
- Q What is the probability that the card drawn is the Ace of Hearts?
- Q When you have equal probabilities, the probability of a Happy Event isways-to-be-Happy/total-possibilities.John has a bucket with 300 glass marbles in it. 100 of the marbles have 'spots,' therest of the...
- Q Sherlock has a well-shuffled complete deck of cards. John has a bucket with 300glass marbles in it. 100 of the marbles have 'spots, the rest of the marbles are one...
- Q What is the probability that the card is any 'heart?'
- Q The cholesterol levels of 14-year-old boys are Normally distributed with mean 17 mg/dL and standard deviation 30 mg/dL.Suppose you pick a 14-year-old boy at random and measure his cholesterol.What is...
- Q point)In a certain large city, 23% of cars are purple. This is a very large city. If we pick onecar at random and set it aside, the rest of the...
- Q A pet store has 9 puppies, including 3 poodles, 4 terriers, and 2 retrievers. If Rebecka selects one puppy at random, the pet store replaces the puppy with a puppy...
- Q If I roll one 4-sided die and one 10-sided die, what is the chance that the total number of spots is 10?
- Q A bag contains 36 red blocks, 48 green blocks, 22 yellow blocks, and 19 purple blocks. You pick one block from the bag at random. Find the theoretical probability. Write...
- Q Two fair number cubes are rolled. Determine whether the events are mutually exclusive.The sum is a prime number; the sum is less than 4.The sum is odd; the numbers are...
- Q A standard number cube is tossed. Find the following probability.P(less than 3 or odd)
- Q Which of the following are mutually exclusive events when a single card is chosen at random from a standard deck of 52 playing cards? Choose all that apply.a. Choosing a...
- Q Mike and Ava decided to see who is better at the online game "Squashing Sweets. They each played three games. Mike's scores were 85, 122, and 117. Ava's scoreswere 107,...
- Q A ball is drawn randomly from a jar that contains 7 red balls, 6 white balls, and 3 yellow balls. Find theprobability of the given event. Write your answers as...
- Q Assume that adults have IQ scores that are normally distributed with a mean of ? = 105 and a standard deviation o=20. Find the probability that a randomly selected adult...
- Q You want to rent an unfurnished one-bedroom apartment in Durham, NC next year. The mean monthly rent for a random sample of 60 apartments advertised on Craig's List (a website...
- Q Hal and Renee play the following game. A bag has 14 tiles in it, each with a letter from the two word phrase the probability on it. Hal and Renee...
- Q USE THE INFORMATION BELOW TO ANSWER QUESTIONS 22 THRU 23In recent years home lighting technology has changed dramatically due to the development of LightEmitting Diode (LED) bulbs. Although previously used...
- Q In a survey of U.S. adults with a sample size of 2003, 358 said Franklin Roosevelt was the best president since World War II. Two U.S.adults are selected at random...
- Q A process yields 14% of defective items. If 100 items are randomly selected from the process, find the following probabilities(a) The probability that the number of defectives exceeds 15(b) The...
- Q A coin is tossed 484 times. Use the normal curve approximation to find the probability of obtaining(a) between 226 and 254 heads inclusive;(b) exactly 245 heads;(c) fewer than 216 or...
- Q A pair of dice is rolled 120 times. What is the probability that a total of 7 occurs(a) at least 16 times?(b) between 24 and 30 times inclusive?(c) exactly 20...
- Q A pair of dice is rolled 240 times. What is the probability that a total of 7 occurs(a) at least 28 times?(b) between 41 and 49 times inclusive?(c) exactly 40...
- Q If we pick one Spring 2011 Math 1530 student at random, what is the probabilitythat we get a male student?PERCENT ANSWER WITH TWO PLACES AFTER THE DECIMAL.
- Q A bag contains 6 orange marbles and 7 green marbles. A marble is selected from the bag at random, set aside, and then another marble is selected. Which of the...
- Q A clothing store has 18 suits for sale. 10 of the suits are blue, and 8 are black. Two suits are chosen to be put on display on the store...
- Q Nadir and Grady work at a company with 50 employees total. The company is going to promote two employees to a director and a manager role. What is the probability...
- Q A single card is drawn at random from a standard deck of cards. What is the probability of drawinga queen or a diamond?Select one:O 1/4O 4/13O 1/52O 17/52
- Q 10 candidates are running for president and vice president positions. What is the probability that aparticular candidate does not win a position?Select one 1/54/51/201/10
- Q Ten cars were recently assembled at a factory. Of these cars, 3 will be picked at random for inspection. Of the 10 cars, 5 are blue and 5 are grey....
- Q Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance x, and sample sizes n? and n?. Assume that the samples are independent,...
- Q Fill in the blank.A value at the center or middle of a data set is a(n)A value at the center or middle of a data set is a(n)
- Q Business projection: An investor is considering an investment in a start-up company. She estimates that she has probability0.39 of a $23,000 loss, probability 0.21 of a $8300 profit, probability 0.14...
- Q Organize Forum Threads on this page and apply settings to several or all threads Threads are listed in a tabular format The Threads can be sorted by clicking the column...
- Q What is the mean length of time that it took people to get over someone What is the median length of time Include the units in your answer Notice the...
- Q company manufactures furniture at its Akron Ohio factory Some of its costs from the past year include 9 100 16 900 50 700 23 900 3 500 21 200 115...
- Q o Suppose Tatiyana is interested in the relationship between language ability and time spent reading She randomly selects a sample of 30 students from the local high school and collects...
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