Statistics question and answers for September 26, 2023
- Q Hugo averages 59 sales per ad with a standard deviation of 10.5 sales per ad. Suppose Hugo's sales per ad are normally distributed. Let X = the number of sales...
- Q On average, Stephanie has noticed that 19 trucks pass by her apartment daily (24 hours). In order to find the probability that exactly 6 trucks will pass her apartment in...
- Q Jackie is practicing free throws after basketball practice. She makes a free throw shot with probability 0.7. She takes 20 shots. We say that making a shot is a success.What...
- Q Consider how the following scenario could be modeled with a binomial distribution, and answer the question that follows. 54.4% of tickets sold to a movie are sold with a popcorn...
- Q The amount of time it takes John to wait in line at the bank is continuous and uniformly distributed between 7 minutes and 17 minutes. What is the probability that...
- Q Justin has a bird feeder which gets visited by an average of 18 birds every 2 hours during daylight hours. What is the probability that the bird feeder will be...
- Q Given that P(A AND B) = 0.37 and P(A/B) = 0.68, what is P(B)? | Round your answer to three decimal places.
- Q The amount of time it takes Hugo to solve a Rubik's cube is continuous and uniformly distributed between 4 minutes and 11 minutes. What is the probability that it takes...
- Q Which of the following scenarios contain biased samples? Select all that apply.Select all that apply.To estimate the mean number of sales that coworkers take at his company, Benjamin collects data...
- Q If the probability that a randomly chosen college student uses a ride sharing app is 0.27, then what is the probability that a randomly chosen college student does not use...
- Q A softball pitcher has a 0.507 probability of throwing a strike for each pitch. If the softball pitcher throws 15 pitches, what is the probability that exactly 8 of them...
- Q Casey is looking to rent a two-bedroom apartment in one of two towns, Gardiner or Augusta. He randomly selects 100 two- bedroom apartments from both towns and records the area...
- Q Consider the following binomial distribution scenario.A softball pitcher has a 0.675 probability of throwing a strike for each pitch and a 0.325 probability of throwing a ball. If the softball...
- Q The amount of time it takes Annie to make dinner is continuous and uniformly distributed between 19 minutes and 49 minutes. What is the probability that it takes Annie between...
- Q What is all individuals, objects, or measurements whose properties are being studied?Select the correct answer below:populationvariablestatisticdata
- Q If X ? U(4.5,18.5) is a continuous uniform random variable, what is P(X > 6)?Select the correct answer below:1/71/211/1425/2813/14
- Q The amount of time it takes William to wait for the bus is continuous and uniformly distributed between 4.5 minutes and 14.5 minutes. What is the probability that it takes...
- Q The event a teen wins a video game is A and the eventa mom buys groceries is B. If these events are independent events, using P(A) = 0.78, and P(B)...
- Q Suppose that we have a sample space S = E?, E2, E3, E4, E5 where E denotes the sample points. Following probability assignments apply: P(E?) = 0.05, P(E?) = 0.15,...
- Q (a) A perfectly balanced coin is tossed 3 times and tail appears on all 3 tosses. Calculate probability of a tail on the 4th trial.(b) An economist predicts a 60%...
- Q Give the numerical value of the parameter n in the following binomial distribution scenario. The probability of buying a movie ticket with a popcorn coupon is 0.597 and without a...
- Q Suppose A and B are mutually exclusive events, and that P(A) = 0.13 and P(B) = 0.85. Find P(A OR B).
- Q Give the numerical value of the parameter p in the following binomial distribution scenario. A softball pitcher has a 0.721 probability of throwing a strike for each pitch and a...
- Q A deck of cards contains RED cards numbered 1, 2, 3, BLUE cards numbered 1, 2, 3, 4, 5, and GREEN cards numbered 1, 2, 3, 4. If a single...
- Q Given the following information about events A B, and C:P(A) = 0.62P(B) = 0.34P(C) = 0.07P(B|A) = 0P(C|B) = 0.34P(AIC) = 0.62Are events A and B mutually exclusive, independent, or...
- Q If the probability of a student taking a calculus class is 0.10, the probability of taking a statistics class is 0.90, and the probability of taking a calculus class and...
- Q A college has buildings numbered from 1 through 60. What is the probability that a student will have their first class in a building number that is not a multiple...
- Q Suppose that X is a discrete random variable which takes on values: 14, 19, 24, 29, 34, 39, 44, 49, 54, 59, and suppose further that Y is a continuous...
- Q With a rectangular metal sheet 24 cm wide and 120 cm long, you want to build a channel, for which you will bend along the sheet, a length x y...
- Q Assume that the population standard deviation is o=0.6. If appropriate, perform a hypothesis test at the a=0.01 level to determine whether the mean GPA for business students differs from the...
- Q The event of pedestrians walking is A and the event of cars pulled over for speeding is B. If these events are independent events, and P(A) = 0.27, and P(B)...
- Q Let D be the event that a randomly chosen person has seen a dermatologist. Let S be the event that a randomly chosen person has had surgery for skin cancer....
- Q Seventy cards are numbered 1 through 70, one number per card. One card is randomly selected from the deck. What is the probability that the number drawn is a multiple...
- Q Let B be the event that a randomly chosen person has low blood pressure. Let E be the event that a randomly chosen person exercises regularly. Identify the answer which...
- Q If A and B are independent events with P(A) = 0.20 and P(A AND B)=0.12 find P(B).Give your answer as a percentage, rounded to two decimal places if necessary.Provide your...
- Q A single card is randomly drawn from a standard 52-card deck. Find the probability that the card is a face card AND is red. (Note: aces are not generally considered...
- Q A bag contains 35 marbles, 11 of which are red. A marble is randomly selected from the bag, and it is blue. This blue marble is NOT placed back in...
- Q Students traveling to Spain on a study abroad trip have varying levels of Spanish proficiency. Of the students studying abroad, 7 students are fluent, 10 students are intermediate, and 2...
- Q For out second experiment. Set the Probability of Heads at 0.25, this will simulate a very biased coin. then fill in the table as you perform certain numbers of tosses....
- Q A card is drawn from a standard deck of 52 cards. Remember that a deck of cards has four suits: clubs, diamonds, hearts, and spades. Each suit has 13 cards:...
- Q You are choosing a passcode for your new phone. It has to be a 6 digit codeusing the numbers 0-9. You are allowed to repeat a number if you would...
- Q A certain medication has a side effect of a skin rash in 4% of the people who take the drug. Suppose 450 people take the drug and let X be...
- Q What is the conditional probability that you will randomly select a blue shirt if there are 15,000 shirts. Of those shirts 5,000 are blueSelect one:a. 1/3b. 5/15c. 1/6d. 1/5
- Q In a high school graduating class of 100 students, 53 studied mathematics, 71 studied history, and 35 studied both mathematics and history. If one of these students is selected at...
- Q A pair of fair dice is tossed. Find the probability of getting (a) a total of 11; (b) at most a total of 4.(a) The probability of getting a total...
- Q Suppose that in a senior college class of 500 students, it is found that 200 smoke, 241 drink alcoholic beverages, 207 eat between meals, 113 smoke and drink alcoholic beverages,...
- Q (a) If a letter is chosen at random from the English alphabet, find the probability that the letter is a consonant including y.(b) If a letter is chosen at random...
- Q A professor has learned that four students in her class of 18 will cheat on the exam. She decides to focus her attention on sevenrandomly chosen students during the exam.a....
- Q At a factory, the probability that a pair of sunglasses will have a scratch on the lens is 0.03. A manager randomly selects a pair of sunglasses to inspect at...
- Q To get the ball back quickly in basketball, a coach decides to have one of his players foul a player on the opposing team, which gives the opposing team an...
- Q A survey of 25 randomly selected customers found the ages shown (in years). The mean is 33.12 years and the standard deviation is 10.20 years.a) Construct a 90% confidence interval...
- Q The probability that an industry will locate in City A is 0.5, the probability that it will locate in City B is 0.6, and the probability that it will locate...
- Q (a) A poll taken in July 2010 estimates this proportion to be 0.32. Using this estimate, what sample size is needed so that the confidence interval will have a margin...
- Q Assume that T(n) = n for n?2. For the questions below, find the tightest asymptotic upper bound and show the method you used to obtain it.Show explanation, please.1) T(n)=(T(n/2))2) T(n)=(T(?n))23)...
- Q In a lottery game, a player picks six numbers from 1 to 30. If the player matches all six numbers, they win 50,000 dollars. Otherwise, they lose $1.What is the...
- Q A baseball player has a batting average of 0.28. What is the probability that he has exactly 4 hits in his next 7 at bats?
- Q In how many ways can 9 students be seated in a row of 9 chairs if Jack insists on sitting in the first chair?Your answer is:___
- Q The table shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to 2012.Year Seal Population Year Seal Population(Thousands) (Thousands)1997 3,493 2005 19,5901998 5,282...
- Q Students at a certain college claim that the average distance students commute to campus is 26 miles per day. To check this claim, a random sample of 16 students is...
- Q From past experience a stockbroker believes that under present economic conditions a customer will invest in tax-free bonds with a probability of 0.6, willinvest in mutual funds with a probability...
- Q (a) It a letter is chosen at random from the English alphabet, find the probability that the letter is a consonant including y(b) If a letter is chosen at random...
- Q Express all answers as decimals rounded to 3 decimal places, if needed. Express percentages as decimals (instead of 25.6%, use .256Cell phone users in Boise can choose between three carriers:...
- Q A firm has a required rate of return of 0.115. Its expected RE is 0.144 and expected earnings pershare are 1.8. If the firm's payout ratio is 0.51, what is...
- Q Given these DuPont ratios and equity per share:Tax burden 0.79Interest burden 0.64Operating marginAsset turnover 1.7Leverage ratio 1.9Avg Equity 28Solve for current Net Income (EPSO) and --What is the value of...
- Q The populations of termites and spiders in a certain house are growing exponentially. The house contains 120 termites the day you move in. After four days, the house contains 210...
- Q Twenty-three subjects volunteer for a study of a new cold medicine. Ten of the volunteers are ages 20-39, 6 are ages 40-59, and 7 are age 60 or older. If...
- Q The daily exchange rates for the five-year period 2003 to 2008 between currency A and currency B are well modeled by a normal distribution with mean 1.143 in currency A...
- Q Of all the River Club members in a particular city, 45% prefer swimming on weekends and 55% prefer swimming on weekdays. It is found that 10% of the members in...
- Q If a coin is flipped 8 times, what is the probability that it will show all heads or all tails? Show your work.
- Q Conditional Probability with Bayes's Theorem:P(A|B) = P(B|A) x P(A) / P(B)
- Q Hemoglobin Level Less than 25 25-35 Above 35 ...
- Q Future scientists: Education professionals refer to science, technology, engineering, and mathematics as the STEM disciplines. A research group reported that 28% of freshmen entering college in a recent year planned...
- Q Many couples believe that it is getting too expensive to host an "average" wedding in the United States. According to a statistics study in the U.S., the average cost of...
- Q 18. The FDA's Center for Food Safety and Applied Nutrition suggests the recommended dietary allowance (RDA) for calcium for woman aged 19 to 24 is 1200 milligrams per day. For...
- Q A basket contains six apples, three oranges, ten corn, four pears and six peaches, You randomly select a fruit. What is the conditional probability of selecting a fruit that it...
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