Statistics question and answers for December 17, 2023
- Q Suppose Emerson loses 30 of all checker games a What is the probability that Emerson loses two checker games in a row b What is the probability that Emerson loses...
- Q Given the sample statistics determine if you should use the t distribution normal distribution or neither to construct a confidence interval for an estimate of From a sample of 22...
- Q Suppose that E and F are two events and that P E 0 4 and P FIE 0 8 What is P E and F P E and F Simplify...
- Q A manufacturer wishes to estimate the proportion of washing machines leaving the factory that is defective How large a sample should she check in order to be 94 percent confident...
- Q Use the given degree of confidence and sample data to construct a confidence interval for the population mean Assume that the population has a normal distribution A sociologist develops a...
- Q Solve the problem Find the critical value ta 2 that corresponds to a confidence level of 98 and a sample siz of 8 O 2 306 O 2 998 O...
- Q Use the given degree of confidence and sample data to construct a confidence interval for the population mean A laboratory tested 90 chicken eggs and found that the mean amount...
- Q Use the given degree of confidence and sample data to find the margin of error in estimating the population mean Replacement times for washing machines 90 confidence n 30 the...
- Q Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p Of 100 adults selected randomly from one town 63 have health...
- Q You select a family with three children If M represents a male child and F represents a female child the set of equally likely outcomes for the children s genders...
- Q A single die is rolled twice The 36 equally likely outcomes are shown to the right Find the probability of getting first an even number and second an odd number...
- Q Use the spinner shown to answer the question Assume that it is equally probable that the pointer will land on any one of the colored regions If the pointer lands...
- Q The density of people per square kilometer for African countries is in table 2 2 11 Density of people 2013 Create a frequency distribution and a relative frequency distribution using...
- Q 10 pes We bought a pack of 10 lightbulbs from a garage sale and o of them don t work If we were to collect a random sample of 2...
- Q 5 In an Oreo factory the mean mass of a cookie is given as 40 g For quality control the standard deviation is 2 g a If 10 000 cookies...
- Q 6 The speeds of cars on the highway have a mean of 95 km h with a standard deviation of 5 km h a What percentage of cars averaged less...
- Q The ability to find a job after graduation is very important to GSU students as it is to the students at most colleges and universities Suppose we take a poll...
- Q Parking survey For a class assignment a group of statistics students set up a table near the 10 points student parking lot They asked students who passed by to complete...
- Q A Gallup survey of 2326 adults at least 18 years old in the U S found that 419 of them have donated blood in the past two years Construct a...
- Q A machine is designed to fill 16 ounce bottles of shampoo When the machine is working properly the amount poured into the bottles follows a normal distribution with mean 16...
- Q Suppose that the distribution for total amounts spent by students vacationing for a week in Florida is normally distributed with a mean of 650 and a standard deviation of 120...
- Q Type numbers in the boxes 10 points A survey asks a random sample of 1500 adults in Ohio if they support an increase in the state sales tax from 5...
- Q Select the correct answer As part of a class project a university student surveyed the students in the cafeteria lunch line to look for a relationship between eye color and...
- Q In Australia in 1995 of the 2907 indigenous people in prison 17 of them died In that same year of the 14501 non indigenous people in prison 42 of them...
- Q 12 Two components of a minicomputer have the following joint pdf for their useful lifetimes X and Y f x y Jxe x20 and y 0 0 otherwise a What...
- Q 27 Annie and Alvie have agreed to meet for lunch between noon 0 00 P M and 1 00 PM Denote Annie s arrival time by X Alvie s by...
- Q A random sample of 310 car buyers was asked about the reason that they chose the car that they did The results are given in the table below Reason for...
- Q Solve for v 4 v13 8 V MEN
- Q Eyeglassomatic manufactures eyeglasses for different retailers They test to see how many defective lenses they made in the time period of January 1 to March 31 A sample of 12571...
- Q A person in a casino decides to play 3 games of blackjack Let W denote a win and L denote a loss Define the event A as the person wins...
- Q 5 Let X denote the number of Canon SLR cameras sold during a particular week by a certain store The pmf of X is 0 1 1 2 2 Px...
- Q A family plans to have 3 children For each birth assume that the probability of a boy is the same as the probability of a girl What is the probability...
- Q A person in a casino decides to play blackjack until he wins a game but he will not play more than 3 games Let W denote a win and L...
- Q 2 A large but sparsely populated county has two small hospitals one at the south end of the county and the other at the north end The south hospital s...
- Q 6 A ski rental shop collected data on the number of rentals on each of ten consecutive Saturdays 44 50 38 96 42 47 40 39 46 50 a Find...
- Q Should the mean median or mode be use to find the center of this distribution Frequency 35 30 25 5 0 P 2 3 4 5 6 7
- Q 2 Below are the monthly average temperatures for two cities in the United States Which city would you expect to have the smaller standard deviation Explain why Jan Feb Mar...
- Q 3 Insert the correct symbol in the space provided between the two numbers 25 15
- Q point s possible The data on the right represent the number of live multiple delivery births three or more babies in a particular year for women 15 to 54 years...
- Q Determine whether the events E and F are independent or dependent Justify your answer a E A person living at least 70 years F The same person regularly handling venomous...
- Q Fill out the following table 4 4 44 45 46 47
- Q point s possible The data on the right represent the number of live multiple delivery births three or more babies in a particular year for women 15 to 54 years...
- Q The probability that a randomly selected 2 year old male garter snake will live to be 3 years old is 0 96263 a What is the probability that two randomly...
- Q Use the order of operations to simplfy each expression Part 1 62 Part 2 6 Part 3 6
- Q Evaluating Exponents and Notation Complete the table below Use the given expressions to guide your work Notes Use the key shift 6 to make an exponent Example 6 2 gives...
- Q Compute the exact values 1 4
- Q Evaluate 10
- Q A survey of 600 randomly selected high school students determined that 536 play organized sports a What is the probability that a randomly selected high school student plays organized sports...
- Q Evaluate 3
- Q Evaluate 24
- Q Find the value of 83
- Q Evaluate 53
- Q Write 5 5 in exponential form 025 0 55 05 2 05
- Q In a national survey college students were asked How often do you wear a seat belt when riding in a car driven by someone else The response frequencies appear in...
- Q Write 7 7 7 7 7 7 in exponential notation Ilse to create an oxponent
- Q a Find the probability that all three have type B blood The probability that all three have type B blood is Round to six decimal places as needed b Find...
- Q In a sample of 1200 U S adults 211 dine out at a resaurant more than once per week Two U S adults are selected at random from the population...
- Q Two cards are selected from a standard deck of 52 playing cards The first is replaced before the second card is selected Find the probability of selecting a heart and...
- Q 4 The table below shows the results of a survey in which 143 men and 145 women workers ages 25 to 64 were asked if they have at least one...
- Q 3 The table below shows the number of male and female students enrolled in nursing at a particular university for a recent semester a Find the probability that a randomly...
- Q 17 A 100 kg uniform rectangular plate is supported in the position showr by hinges A and B and by cable DCE that passes over a frictionless hook at C...
- Q c Does 30 minutes of aerobic exercise each day provide significant improvement in mental performance To investigate this issue a researcher conducted a study with 150 adult subjects who performed...
- Q You and your friend are engaging in a classic sports argument which famous athlete is better at their respective sport In other words we re going to explore the question...
- Q b The nicotine content in cigarettes of a certain brand is normally distributed with mean in milligrams and standard deviation 0 1 The brand advertises that the mean nicotine content...
- Q The city of Raleigh has 11 800 registered voters There are two candidates for City Council in an upcoming election Brown and Feliz The day before the election a telephone...
- Q If you randomly select an NBA player what percentage of the time would the player s points per game for the season be less than Tyler Herro s To answer...
- Q If you randomly select a professional basketball player what is the probability that the player s points per game for the season is between Cody Zeller and Udonis Haslim To...
- Q Problem 2 The error involved in making a certain measurement is a continuous rv X with the following pdf 0 0 f x x 2 x 2 otherwise 0 09375...
- Q Problem 3 Let X the time between two successive arrivals at the drive up window of a local bank If X has an exponential distribution with X 1 which is...
- Q Distribution Normal Exponential Gamma Weibull Applications Examples include heights weights and other physical characteristics Measurement errors in scientific experiments anthropometric Measurements on fossils LIN 1 E IN reaction times in...
- Q Problem 1 Let Z be a standard normal random variable and calculate the following probabilities 1 P Z 2 50 Round your answers to four decimal places 2 Find the...
- Q Let X be the total medical expenses in 1000s of dollars incurred by a particular individual during a given year Although X is a discrete random variable suppose its distribution...
- Q 22 The weekly demand for propane gas in 1000s of gallons from a particular facility is an rv X with pdf 2 f x 15x52 otherwise a Compute the cdf...
- Q 92 The article The Load Life Relationship for M50 Bearings with Silicon Nitride Ceramic Balls Lubrication Engr 1984 153 159 reports the accom panying data on bearing load life million...
- Q 81 Sales delay is the elapsed time between the manufacture of a product and its sale According to the article Warranty Claims Data Analysis Considering Sales Delay Quality and Reliability...
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