SHORT ANSWERS. Write your answers in the space provided to the right. 8 hungry customers show up to McDonald's at the same time. In how many ways can these 8 individuals line up to place their order? ✓ How many 6-digit security codes are possible if the digits can repeat? ✓

Q: a)Suppose you are working in a lab, and you have 100 plates of cells, each of which has a 3%…

A: Total number of plates=100 probability of yeast contamination=0.03

Q: QUESTION FIVE (a) You are given below the figures of annual production (in thousand tonnes) of a…

A: X Y 1998 70 1999 75 2000 90 2001 91 2002 95 2003 98 2004 100 “Since you have posted…

Q: Consider the following data set: 0,7,4,14,-3,-1,11 Find the lower quartile.

A: The given data is 0, 7, 4, 14, -3, -1, 11.

Q: Mean =7, median =10, standard deviation =3 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 7 median = 10  and standard deviation = 3

Q: 12. Comparing ANOVA and the t test for an independent-measures hypothesis test Suzanne Zeedyk, a…

A: The ANOVA table is given as- Source of variation Sum of square Degree of freedom Mean sum of…

Q: The chemical engineer you met in Quiz 1 wants to show you something he had worked on the past month.…

A: The data for the current and proposed processing time is given.

Q: In a study of exhaust emissions from school buses, the pollution intake by passengers was determined…

A: The question is about confidence interval Given : Confidence level = 0.90 Randomly selected no. of…

Q: One more question sorry!  A sample is considered more representative of a population when-  A) you…

A: A sample is considered more representative of a population when-  A) you randomly assign subjects to…

Q: Which situation requires the use of both combinations and permutations? a. Selecting 3 boys and 3…

A: Permutation is used when the order/sequence is important.

Q: A teacher is creating a test from a question bank. If question 1 can be chosen from 8 options,…

A: Number of options for question 1 = 8 Number of options for question 2 = 3 Number of options for…

Q: According to an automobile association, the average cost of a gallon of regular unleaded fuel at gas…

A: Given: Mean (µ) = 2.825 Standard deviation (σ) = 0.15 X~N (2.825, 0.15) Sample size (n) = 100

Q: Assume that the helium porosity level (measured in percentage) of coal samples taken from any…

A: Population standard deviation =0.75 Width of C.I =0.40

Q: 20.19 You have an SRS of nine observations from a Normally distributed population. What critical…

A: As per the Bartleby guildlines we have to solve first question and rest can be reposted.... 20.19…

Q: Approximately what proportion of the test scores are between 495 and 725?  The mean is 80 and the…

A: In statistics, understanding the distribution of a dataset is essential in making informed…

Q: Suppose you want to check whether a coin is fair or not. You flip the coin 100 times and get 41…

A: The sample size n=100 The number of favorable outcomes X=41 The level of significance α=0.01 The…

Q: A certain brand of candies have a mean weight of 0.8617 g and a standard deviation of 0.0511. A…

A: Given the weight of the candies are normally distributed. x~N(μ,σ) μ=0.8617σ=0.0511

Q: A researcher wonders if there an association between the incidence of colds and the amount of…

A: The observed frequency table is:   At least one cold No cold Row Total No Vitamin C 46-5=41…

Q: A study was done on different college campuses that showed that 82% of the student population felt…

A: Note- Taking the problem a left-tailed hypothesis according to the statement given in the problem.…

Q: To test whether the mean time needed to mix a batch of material is the same for machines produced by…

A: The given data shows the time (in minutes) needed to mix the material.

Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 292 treated subjects…

A: Number of successes, x=18 Sample size, n=292 Significance level, α=0.10

Q: At Rachel's 11th birthday party, 8 girls were timed to see how long (in seconds) they could hold…

A: At Rachel's 11th birthday party, B-girls were timed to see how long ( in seconds ) they could hold…

Q: Only need (b) answered

A: A linear regression shows relationship b/w 1 dependent variable and 1 or more independent variables.

Q: When two variables covary, the a. variables are related to each other b. variables tend to change…

A: When two variables covary :  If one variable change than another variable also change  Positive…

Q: 1. Consider a population of adults in which 40% are aged 18-45, 32% are aged 45-65, and 28% are aged…

A: Percentage of population according to their age groups: P18-45 years=0.40P45-65 years=0.32P65+…

Q: Given the regression equation for variables X and Y as: Y^ = -12 +1.8 x Predict the score for x =…

A: Answer: From the given data, The regression equation for X and Y variables is: Y⏞ = -12 + 1.8 x

Q: Suppose the fuel efficiency, in miles per gallon, of a certain model of car is normally distributed.…

A: Answer: From the given data, given confidence interval = (16.1, 18.1)

Q: A drug company claims that an allergy medication causes headaches in 5% of those who take it. A…

A: Population proportion, p=0.05

Q: An instructor finds that there is a tendency for students who send more text messages during class…

A: Correlation coefficient : it denotes by r  Value of correlation coefficient define strength of…

Q: For X∼normal with μ=2, σ=3 and a sample size of 29, P(X¯>3)= Note: round your z score to two…

A: X∼normal with μ=2, σ=3  n=29

Q: s returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%.…

A: Given that  Sample size n=6970 Favorable cases x =1285 Sample proportion p^=x/n  =1288/6968 =0.1848

Q: Given that A=( 5) and 1=). Find A in terms of A and I

A: I assume that A=(5) means that A is a 1x1 matrix with the single element 5.   To express A in terms…

Q: can I have h?

A: h). n = 81     p = 0.10

Q: adults, 45% indicated that movies were getting better whereas 43% indicated that movies were getting…

A: Sample size = 800 Sample proportion= 0.45

Q: ing to a study of political prisoners, the mean duration of imprisonment for 34 prisoners with…

A: We have given that,  n = 34 , x̄ = 34.9 and σ = 42

Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 292 treated subjects…

A: Number of successes, x=18 Sample size, n=292 Significance level, α=0.10

Q: Grouped Data Class Interval 24 - 26 21-23 18-20 15-17 Σ ● f 32432 12 Xi 25 22 19 16 xm 20.25 20.25…

A: The grouped data is, Class Interval f 24-26 3 21-23 2 18-20 4 15-17 3

Q: A radio network determined that the time taken to play a baseball game is normally distributed with…

A: Answer: From the given data, mean(μ) = 160 standard deviation(σ) = 14

Q: A biologist is testing to see whether applying organic fertilizer to a corn plant results in more…

A: The given claim is that the average number of ears per stalk is higher for the treated stalks.

Q: Suppose N~ Binomial (m, q), in which N is the number of claims per policyholder per year. (a)…

A: To estimate the expected number of claims EN=mq, the standard for full credibility is given by:…

Q: college has a financial aid formula that applies to applicants whose family's income is below a…

A:

Q: The commercial for the new Meat Man Barbecue claims that it takes 17 minutes for assembly. A…

A: It is given that- Population mean : μ=17 Sample mean :x=18 Sample size: n=12 Sample standard…

Q: 1. To determine the mode, median, Q₁, Q3, D6, P45, and P88, what auxiliary table would you determine…

A: Note: Graphs for part C are missing, so answer is provided for part A and B. To determine the value…

Q: Bluereef real estate agent wants to form a relationship between the prices of houses, how many…

A: The regression output for the dependent variable house price with independent variables bedrooms,…

Q: Below are a subset of data from a workplace safety survey. Using a .01 level of significance,…

A: The null and alternative hypotheses for an independent-samples t-test are:   H0: μmen = μwomen…

Q: Suppose we are testing the hypothesis that occurrence of five types of viruses (A, B, C, D and E) is…

A: Answer: From the given data, Number of rows (r) = 5 which are A,B,C,D and E Number of columns (c) =…

Q: 35 Cyberbullying, continued. Refer to Exercise 5.33. a. What is the expected number of…

A: The information provided in the question are as follows : Number of undergraduates in a sample is…

Q: What is the Sample Mean Difference

A: A research team is interested in investigating the effectiveness of a new medication intended to…

Q: As of July 11, 2020, below are the countries in the world with fewer confirmed cases of COVID 19.…

A: Country Total of COVID 19 Confirmed cases Continent Anguilla 3 North America The British Virgin…

Q: In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of age or older…

A: 95% confidence interval is (0.205,0.257)

Q: If the population standard deviation of a normal distribution is 1.8, then find the standard…

A: Answer: From the given data, population standard deviation(σ) = 1.8 number of observations(n) = 49