Statistics question and answers for January 14, 2024
- Q Find the indicated probabilities using the geometric distribution the Poisson distribution or the binomial distribution Then determine if the events are unusual If convenient use the appropriate probability table or...
- Q You wish to test the claim that the first population mean is not equal to the second population mean at a significance level of a 0 005 Ho 1 2...
- Q Show all work If a calculator function is used write out the input commands i e invNorm 0 01 0 1 A SRS of 42 students are polled and asked...
- Q You decide to test the claim that the mean Age of TCC students is less than 30 at the 05 significance level From your sample of 89 students the mean...
- Q GlenBluss Community College has a population mean GPA is 2 82 with population standard deviation of 1 07 for all students who have ever attended the college Find the probability...
- Q From National Testing data we find that College math class testing times are Normally distributed with 46 minutes and o 3 minutes A B C D E F G Using...
- Q The following data give the average price received by fishermen for several species of fish in 2000 and 2010 The price is in cents per pound Fish COD FLOUNDER HADDOCK...
- Q Here is a scatter plot for a set of bivariate data O O 8 c O LO O O 88 O What would you estimate the correlation coefficient to be...
- Q Adult men have heights with a mean of 69 0 inches and a standard deviation of 2 8 inches Find the z score of a man 67 inches tall Round...
- Q me 10 Find all the points on the curve x t 3t y t 3 where the tangent is horizontal or vertical xast I 200 Hoitoub 19W0 I I fst...
- Q 5 Solve y 3x y y 0 1
- Q A book claims that more hockey players are born in January through March than in October through December following data show the number of players selected in a draft of...
- Q In a book the characters are trying to determine whether the Poisson probabilistic model can be used to locations that rockets landed in a city They divided the city into...
- Q Find the indicated probabilities using the geometric distribution the Poisson distribution or the binomial distribution Then determine if the events are unusual If convenient use the appropriate probability table or...
- Q K A mar 24 blue 20 orange and 16 green A student randomly selected a bag of colored candies He counted the number of candies of each color and obtained...
- Q The first significant digit in any number must be 1 2 3 4 5 6 7 8 or 9 It was discovered that first digits do not occur with equal...
- Q Find the indicated probabilities using the geometric distribution the Poisson distribution or the binomial distribution Then determine if the events are unusual If convenient use the appropriate probability table or...
- Q 23 4 in Figure vervsa 17 6 in Volume IC
- Q Round to the nearest hundredth when necessary If a rectangular prism with a length of 12 feet and a width of 9 feet has a surface area of 930 square...
- Q Assume the geometric distribution applies Use the given probability of success p to find the indicated probability Find P 4 when p 0 90 P 4 Round to five decimal...
- Q Figure 18 in Part Find the volume and surface area of each figure below Round to the nearest hundredth when necessary Volume Surface F 15 in 3 5 in 2
- Q domly select six workers and ask each if they know what their CEO looks like Complete parts a through d below a Find the mean of the binomial distribution H...
- Q 37 of women consider themselves fans of professional baseball You randomly select six women and ask each if she considers herself a fan of professional baseball Complete parts a through...
- Q Assignment 6 5 points A small commuter airline uses a plane with the capacity to carry at most p passengers on a hopping flight The hopping flight visits the cities...
- Q Eighteen percent of people in a city eligible to donate blood actually do You randomly select four eligible blood donors and ask them if they donate blood Complete parts a...
- Q The area to the right of z 1 54 P z 1 54 under a standard normal distribution is closest to 0 938
- Q The heights in inches and weights in lbs of 10 American men are given below Height N8632ERESA 72 74 70 71 69 73 Weight 185 140 200 170 220 195...
- Q A local group claims that the police issue more than 60 speeding tickets a day in their area To prove their point they randomly select two weeks and count the...
- Q A recent study claimed that at least 15 of junior high students are overweight Te test this claim a random sample of 160 students is surveyed and 18 of the...
- Q The test statistic in a right tailed test is z 0 52 Use this information to find the p value 0 1915 O 0 3015 0 1950 0 5530
- Q A travel association claims that the mean daily meal cost for two adults traveigling together on vacation in San francisco is 105 A random sample of 20 such couples has...
- Q A tire manufacturer claims that the lifetime of its tires are normally distributed with a mean of m 34 000 miles and a standard deviation of a 1200 miles A...
- Q Find the right critical value for 99 confidence interval for a with n 8 O 18 475 20 278 O 1 239
- Q Given the linear correlation coefficient r and the sample size n determine the critical values of r and use your finding to state whether or not the given r represents...
- Q Find the left critical value for 95 confidence interval for a with n 41 26 509 O24 433 O55 758
- Q To find the standard deviation of the diameter of wooden dowels the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s 0...
- Q The average price of a home in a town was 178 000 in 2013 but home prices are rising by 5 per year a Find an exponential function of the...
- Q A researcher at a major hospital wishes to estimate the proportion of the adult population of the United States that has high blood pressure How large a sample is needed...
- Q What is a savings plan Choose the correct answer below A A savings plan is a type of mutual fund that helps people pay off a debt over a long...
- Q In order to efficiently bid on a contract a contractor wants to be 95 confident that his error is less than two hours in estimating the average time it takes...
- Q Describe the basic differences between linear growth and exponential growth Choose the correct answer below OA Linear growth occurs when a quantity grows by random amounts in each unit of...
- Q What is the at least once rule Explain how the at least once rule can be used to find the correct probabilities in the games of the Chevalier de Mere...
- Q When they send out their fundraising letter a philanthropic organization typically gets a return from about 5 of the people on their mailing list To see what the response rate...
- Q A farmer has just cleared a new field for corn It is a unique plot of land in that a river runs along one side The com looks good in...
- Q Before lending someone money banks must decide whether they believe the applicant will repay the loan One strategy used is a point system Loan officers assess information about the applicant...
- Q The time required to assemble a single Play Station 5 is approximately normally distributed with 15 57 minutes and o 2 minutes A random sample of 20 Play Station 5...
- Q Housing prices in the U S in 2021 had the largest jump in 30 years Recently in one large community real estate agents randomly sampled 31 bids from potential buyers...
- Q B Method Number Two Simple Random Sample Number each spot on the grid with a different number Using your random digits table to choose 10 different spots to harvest Mark...
- Q C Method Number Three Stratified Sample Consider the field as grouped in vertical columns called trata Label each column with a different number Using your random digit table randomly choose...
- Q 12 pts I work for a pharmaceutical company and I want to show that our new pill lowers cholesterol I know that by not taking a pill there is a...
- Q Units and use complete sentences when interpreting your result 8 pts A local hospital advertises that the average wait time in their emergency room is 16 minutes but we believe...
- Q 12 pts I work for a pharmaceutical company and I want to show that our new pill lowers cholesterol I know that by not taking a pill there is a...
- Q septem 7 only Taming behind the cost of living A survey of 50 random working class households in early February 2008 found that 32 of them now felt their incomes...
- Q The distribution of scores on a test for a particular class is skewed to the left The professor wants to predict the maximum score and understand the distribution of the...
- Q A very large study showed that aspirin reduced the rate of first heart attacks by 50 A pharmaceutical company thinks it has a drug that will be more effective than...
- Q In each of the following situations is the alternative hypothesis one sided or two sided What are the hypotheses a A business student conducts a taste test to see whether...
- Q The environmental group Oceana analyzed 1215 samples of seafood purchased across the United States and genetically compared the pieces to standard gene fragments that can identify the species 32 5...
- Q In each of the following situations is the alternative hypothesis one sided or two sided What are the hypotheses a A business student conducts a taste test to see whether...
- Q K During an economic crisis the average value of homes in a community of 36 homes lost 9462 with a standard deviation of 1400 The average home value in the...
- Q The accompanying data provide the number of emails received by a university teacher in a large Introductory Statistics class during an entire term The teacher then counted for each student...
- Q Young people can be strongly influenced by advertising In an attempt to understand the impact of cigarette companies marketing on junior high school students the non profit organization Monitoring the...
- Q Suppose I want to test whether students textbook costs for this semester are higher on average than the average cost of 450 in 2000 What would be an appropriate alternative...
- Q Which of the following hypotheses has the appropriate form for a null hypothesis Choose the correct answer below Op 0 30 O p 0 30 Op 0 30 O p...
- Q e are several scatterplots The calculated correlations are 0 021 0 951 0 736 and 0 923 ch is which MY tch each scatterplot with its calculated correlation a c...
- Q Describe how the shape center and spread of t models change as the number of degrees of freedom increases Choose the correct answer below O A Shape becomes farther from...
- Q A very large study showed that aspirin reduced the rate of first heart attacks by 50 A pharmaceutical company thinks it has a drug that will be more effective than...
- Q A medical researcher measures the increase in heart rate of patients who are taking a stress test What kind of variable is the researcher studying Choose the correct answer below...
- Q For many people breakfast cereal is an important source of fiber in their diets Cereals also contain potassium a mineral shown to be associated with maintaining a healthy blood pressure...
- Q It the 1980s it was generally believed that congenital abnormalities affected about 8 of a large nation s children Some people believe that the increase in the number of chemicals...
- Q The actual volumes of quart size bottles of Heinz Ketchup are uniformly distributed from 31 44 to 32 5 fluid ounces Find the standard deviation in volumes of quart size...
- Q 10 pts In September 2007 only 48 of working class households said their incomes were falling behind the cost of living A survey of 50 random working class households in...
- Q Consider the density curve plotted below 0 055 0 05 0 045 0 04 0 035 PDF X 1 Q3 0 03 0 025 0 02 0 015 ODI 0...
- Q Units and use complete sentences when interpreting your result 8 pts A local hospital advertises that the average wait time in their emergency room is 16 minutes but we believe...
- Q 12 pts I work for a pharmaceutical company and I want to show that our new pill lowers cholesterol I know that by not taking a pill there is a...
- Q GPAS at CCSU are normally distributed with a mean of 2 42 and a standard deviation of 0 53 Find the z score for a GPA of 3 39 0...
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