5 Estimates for the proportion of people who have COVID-19 in a given community vary over time and from place to place. But let's suppose that in some community 4% of people are infected. If a random group of 20 people gather, what is the probability that at least one of them is infected?

Q: Use the central limit theorem if possible. For a sample of n = 100, find the probability of a sample...

A: As per our guidelines we are suppose to answer only one question1)Mean(μ)=22standard deviation(σ)=9

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

A: I solved exactly first three subparts because of bartleby policy if you want more please upload sepa...

Q: A fair coin is flipped six times and the number of heads is counted. Calculate the probability that ...

A:

Q: In the past, it had a probability of 0.68 success in any attempt to make a call on the telephone. Ca...

A: Let X be the random variable from binomial distribution with probability of success (p)=0.68 and sam...

Q: Find the chance that the first card is a club and the second card is a club

A: There are total 52 cards in deck Two cards are drawn that is without replacement  Total club cards =...

Q: senior inspector will inspect 10 rooms this week. (d) To have a fair representation, how many sea-vi...

A: In ENJOY hotel, there are a total of 200 rooms. 160 rooms are ordinary-sized, and the rest are suite...

Q: TABLE A shows the number of success data obtained from a standard and new procedure of bio engineeri...

A: Given data : x1= 73 n1= 120 x2= 101 n2= 120 significance level, 0.05

Q: Rick Miller has just opened a new bakery in Frisco, Colorado, called Morning Fresh. In performing an...

A: Given, Marginal cost or loss for each dozen doughnuts sold=$4 The estimated marginal profit=$2.75 pe...

Q: An article in lnternational Journal of Electrical Power & Energy Systems Stochastic Optimal Load Flo...

A:

Q: Sotoce sia to aslgrce Jn 14. What is the mean of the sampling distribution of the А. 3.44 erd ni tno...

A: Here use sampling distribution 

Q: If the expectation of a Poisson variable is 1, then find P(X> 1).

A:

Q: If X is a binomial random variable, compute the probabilities below: (a) X - Binom(8, 0.4) P(X 3) =...

A: The random variable X follows binomial distribution. We have to find the probability by using pmf of...

Q: With usual notations, find p for a Binomial variate X, if n=6 and 9P(X=4)%3DP(X%3D2) *

A: Given,n=69P(X=4)=P(X=2)A random variable X~Binomial (n=6 , p)P(X=x)=6xpx1-p6-x  ;   x=0,1,2,....6

Q: (i) Find a 95\% confidence interval for p, the true proportion of the Egyptian population infected w...

A: It is given that Sample size n = 3888 Number of individuals with Hepatitis C virus, X = 973 Margin o...

Q: e. However, there were too many people so they decided to split up to 3 nearby bed and breakfasts. 4...

A:

Q: According to the table below, what is the probability that the grade of a student chosen at random w...

A: Solution-: We have following table: Grade A B C D F Probability 2/35 3/35 17/35 9/35 4/35 We...

Q: A laptop company claims up to 10.1 hours of wireless web usage for its newest laptop battery life. H...

A:

Q: Example 3.3. Plastic covers for CDs. Measurements for the length and width of a rectangular plastic ...

A:

Q: Truck Inspection Violations The probabilities are 0.4, 0.2, and 0.4 that a trailer truck will have n...

A:

Q: Employees in 2012 paid 4.2% of their gross wages towards social security (FICA tax), while employers...

A:

Q: 8. A pair of fair dice is rolled. Find the following probabilities. a) probability of totaling 8; b)...

A:

Q: Exercise 6. Suppose X1 and X2 are independent standard normal random variables. For a constant a let...

A:

Q: a) How big of a loan can you afford? $ b) How much total money will you pay the loan company? $ ...

A:

Q: How many permutations of the letters can be made from the word MATHEMATICS

A:

Q: Write the number eight and fifty one thousandths

A: Please find the solution below. Thank you

Q: The device consists of 3 elements. The probability of failure free operation of each of them are res...

A:

Q: 1. A clock was reading the time accurately on Friday at noon. On Monday at 6pm the clock was running...

A: 1. A clock was reading the time accurately on Friday at noon. On Monday at 6pm the clock was running...

Q: The data shown below for the dependent variable, y, and the independent variable, x, have been colle...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a...

Q: students are required to join at least one school club to get extra-curriculum activities' ma owing ...

A: *Answer:       

Q: An unbiased die is thrown twice. Find the probability distribution of the number of sixes.

A:

Q: Suppose we have a continuous random variable over -2 <x< 5. What is the mean of X? Round-off your an...

A:

Q: II. Find the missing probability to satisfy the properties of the probability distribution. 11. 3 4 ...

A: As per our guide lines we are lines we are supposed to answers only one question per post so I am so...

Q: 11. A discrete random variable X has the following probability distribution 77 78 79 80 81 P(x = x) ...

A:

Q: There is a regression equation. It is Weight = - 180 + 5Height. The mean weight is 155 pounds with ...

A: Given information: Mean weight is 155 pounds with a standard deviation of 30 pounds The mean height ...

Q: An urn contains 4 white and 3 red balls. Find the probability distribution of red balls in a random ...

A:

Q: three

A: A person can choose either his/her own phone or can choose phone of other person. For each person th...

Q: The chance of getting incentives in an exam is 1/3. What is the likelihood that at least one of thre...

A:   The chance of getting incentives in an exam is, The chance of not getting incentives in an exam i...

Q: Based on historical daily stock prices for the first year after an IPO, the typical rate of return a...

A: Note: Hi! Thank you for the question. As you have posted multiple sub-parts, according to our policy...

Q: Consider the following Normal Plot. How would you go about determining the setting of A and B to imp...

A: Given the normal probability plot. When all the effects are zero, the normal probability plot of the...

Q: Three cards are drawn from pack of 52 cards. Find the probability distribution of the number of aces...

A: Given,Total no.of cards=52no.of ace cards=4

Q: An American roulette wheel contains 38 numbers: 18 are red, 18 are black, and 2 are green. When the ...

A: Givenno.of red numbers=18no.of black numbers=18no.of green numbers=2Total numbers=38

Q: In reference to the general nature of research, how could this research topic entitled “Conditioning...

A: Research topic : "Conditioning as a Function of the interval between the Conditioned and original st...

Q: Unilab claims that its medicine can provide relief from headache in less than 10 minutes. For a test...

A: The random variable time of relief follows normal distribution. We have to test whether relief from ...

Q: A die is rolled three times. What is the chance that at least one roll shows 2 or more spots?

A:

Q: Twelve students compete in a race. In how many ways first three prizes be given?

A:

Q: 6. The weather in San José is either sunny or rainy. Suppose that, after a sunny day, there is a 30%...

A:

Q: die is rolled three times. What is the chance that at least one roll shows 1 spot?

A: Given, experiment:-if die rolled three times. then number of elements in sample space(S)=63=216

Q: The amounts of 45 personal loans from a loan company follow: $725 $850 $900 $1125 $400 $1050 $700 $4...

A: Given the value::

Q: Security researchers frequently would like to know the probability people pick things for their 4-di...

A: Most common 4 digit pins used for mobiles or ATMs 1234 1111 0000 1212 7777 1004 2000...

Q: 1.6.Find the corresponding standard score of the following values: a. 88 b. 86 c. 92 d. 94​

A: Here given  Mean = 90 Standard deviation  = 1.6 Use z score formula here