Alexandra and Martha take a math exam. The probability of passing this exam for Alexandra and  Martha is 2/3 and 3/5, respectively. What is the probability that at least one of them will pass the exam?

Q: For each of the variables described below, indicate whether it is a quantitative or a categorical…

A: a) The variable is temperature (in degree Celsius).

Q: The time needed by a student to finish a quiz in one subject is a/an ___ variable? A. Discrete B.…

A: here our variable is : The time needed by a student to finish a quiz in one subject we have to…

Q: list the elements of the sets correstpong to the following event. A U C=

A: It is given that  S = {0,1,2,3,4,5,6,7,8,9} A = {0,2,4,6,8} B = {1,3,5,7,9} C = {4,5,6,7} D =…

Q: In a test of the effectiveness of garlic for lowering cholesterol, 47 subjects were treated with…

A: Given: Sample size n = 47 Sample mean d = 3.7 Standard deviation sd = 18.8 Confidence level = 99%…

Q: Find the upper class limit of the second class

A: Given, Scores Frequency 70.5-75.5 10 75.5-80.5 4 80.5-85.5 19 85.5-90.5 17 90.5-95.5 15…

Q: If X is a discrete random variable with probability mass function given as in Table 3.1, find (i)…

A:

Q: What percent of the population of the world lives in countries other than China or India?

A: The total population in the world is 7693 million.

Q: A students ID number is a/an ____ variable? A. Ordinal B. Nominal C. Continuous D. Discrete

A: The given statement is 'The variable student ID number'.

Q: # of Movies 0 1 2 3 4 5 Frequency 4 5 3 5 4 5 The first quartile :  The third quartile:  What…

A: The given data is a s follows: # of movies Frequency 0 4 1 5 2 3 3 5 4 4 5 5

Q: You need to have a password with 4 letters followed by 2 even digits between 0 and 9, inclusive. If…

A: Concept:When selection is done without repetition then it means that once a digit or letter is used…

Q: Question 27 Storm data collected from 1858-2017 show that the number of tropical storms per year is…

A:

Q: A company has hired 24 new employees, and must assign 10 to the day shift, 9 to the evening shift,…

A: The question is about counting Given : Total no. of employees = 24 No. of employees assign to day…

Q: Should you have a cup of coffee to make you more alert when studying for a big test? A researcher is…

A: Hint: A completely Randomized Design (CRD) is one of the experimental designs where treatments are…

Q: 60 randomly selected students were asked the number of pairs of shoes they have. Let X represent the…

A:

Q: Assume the random variable X has a binomial distribution with the given probability of obtaining a…

A:

Q: Na 1970 PASHET IC HEALTH ASMETH-PASMETH-R OMETH-PASMETH-PASMETH-PAS Ss = Sample size…

A: The notations in the formula of the sample size is given as: Ss = Sample size that needs to be…

Q: Suppose that X₁, X₂, ..., Xnconstitute a random sample from a Poisson distribution with mean 0. Find…

A: Given Xi~Pois(θ) ; i=1,2,..,n Mean=variance=θ for Poisson distribution

Q: If S= {0,1,2,3,4,5,6,7,8,9} and A={0,2,4,6,8}, B={1,3,5,7,9}, C={4,5,6,7}, and D={1,8,9}, list the…

A:

Q: Determine the sampling procedure to be used and explain why. Determine the population under…

A: Sample is the subset of population. The techniques used to take sample from the population is known…

Q: What is the t ratio of B₂ of in the regression output below? (Report you answer using 2 decimal…

A: Suppose β2 is the slope coefficient of the X2.

Q: I. Mean=Median=Mode II. Area under the curve= 100%, mean=0 III. there are a family of standard…

A: given data (1) mean=median=mode(2) area under the curve=100%,     mean=0(3)there are a family of…

Q: a. Use the summation operator (Σ) to simplify the following expressions (where X and Y are…

A:

Q: e) Describe the gas mileage of the worst 2.5% of cars. The worst 2.5% of cars get less than (Type an…

A: Given data normal distribution μ=24.81σ=6.19empirical rule : 68-95-99.7% datafall within 1σ-2σ-3σ of…

Q: True or False: The slope of a linear prediction equation tells you whether the association is…

A: Here we have to identify whether the given statement is True or False The slope of a linear equation…

Q: Please answer part E only

A: to solve Part E  we have to answers a to c As you answers A to C we solve only part e

Q: Find the given sample space and use it to answer the questions below. (Write events in increasing…

A: Asper guideline expert have to answer first 3 subparts only. So I had solved d,e,f as you have…

Q: Suppose that 10 students have taken an exam and that the mean and median scores are both 60. (Since…

A:

Q: Find the median for the following data 9,12,24,18,16,11,7,4,23

A: Answer: Given data is, 9,12,24,18,16,11,7,4,23 We have to find the median of this data.

Q: x+y 150 Suppose the joint probability distribution of X and Y is given by f(x,y) = (a) Find P(X…

A: Probability is the likelihood of observation happen in the data set. It is calculated by dividing…

Q: Perform Grubb's Test and make a conclusion to accept or reject the outlier .

A:

Q: A company wants to produce a souvenir with a marketing life of six months. Uncertainty surrounds the…

A: Given: Sales Units Probability 100000 0.3 80000 0.6 60000 0.1         Contribution…

Q: n = 47 p = 0.2 Find μ.     9.7     8.9     9.4

A: Hint:  For Binomial distribution mean = μ= np

Q: Centipedes vary in the number of segments that they possess. A biologist measures segment number…

A: There are two types of variables, they are quantitative and qualitative. Quantitative variable are…

Q: 7. Suppose that a population is known to be normally distributed with μ=2,100 and a=240. If a random…

A: Answer

Q: A collegiate long jumper is hoping to improve his distance with a new conditioning routine. The new…

A: Given Information: Prior to the new program, the jumper was averaging 24.5 feet per jump. After the…

Q: 1. Compute the correlation coefficient. X 5 4 2 6 3 36 4 1 4 5 1 The Correlation Coefficient Given…

A: Given: n = 5 Formula Used: Correlation coefficient r = n∑XY-∑X∑Yn∑X2-∑X2n∑Y2-∑Y2

Q: Question 20 The number of homeruns per season by Alex Rodriguez is displayed below. 005 7 9 16 18 23…

A: According to the given information, we have Data set is given by, Data set =…

Q: Data was collected on the number of traffic fatalities per year in a variety of vehicles and for a…

A: Mode: Mode may be defined as the maximum number of observation is called mode.

Q: Let A and B have the joint probability density function f(a,b) = 6(1-a - b) for a+b 0, b>0 and it is…

A: Given that, A and B have joint pdf: f(a,b)= 6(1-a-b)   ,   a+b>1, a>0,  b>0

Q: 5. (L&K 4.23) Suppose that 7.3, 6.1, 3.8, 8.4, 6.9, 7.1, 5.3, 8.2, 4.9, 5.8 are 10 observations…

A: The question is about hypo. testing Given : Data - 7.3, 6.1, 3.8, 8.4, 6.9, 7.1, 5.3, 8.2, 4.9, 5.8…

Q: A company held a blood pressure screening clinic for its employees. The results are summarized in…

A: given data blood pressure under 30 30-49 over 50 total low 26 35 33 94 normal 50 90 93 233…

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A:

Q: What quarter has the largest spread of data? Fourth Quarter Second Quarter First Quarter Third…

A: Since you have posted a question with multiple sub-parts, we will solve first 3 sub-parts for you.…

Q: A tourist center is open on weekends (Friday, Saturday, and Sunday). The owner-manages hopes to…

A: Given data:   1 2 3 4 5 6 Friday 136 146 146 146 151 156 Saturday 246 246 256 256 271 271…

Q: (a) What is the probability that on a randomly selected day, the flight will depart after 9:11 a.m.?…

A: Given: μ=7σ=4

Q: Using the table below: a) Construct an expanded table showing relative return b) Calculate the…

A: The returns for 8 weeks with corresponding probabilities are given in the table below: Week…

Q: A friend commutes by bus to and from work 6 days/week. Suppose that waiting time is uniformly…

A: Given information: X~U0,10a=0b=10

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Givenn=1100x=501confidence level=99%

Q: Fifteen more than three times a number is the same as ten less than six times the number. What is…

A: Given that  Fifteen more than three times a number is the same as ten less than six times the number

Q: 5. The following data refer to the profits of a store in thousand taka for the last 6 months are 9,…

A: