Based on a poll, 50% of adults believe in reincarnation. Assume that 4 adults are randomly selected, and find the indicated probability.   d. Determine the expected value and the standard deviation

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

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Q: There are 225 dogs that participated at the National Dog Show that weigh an average of 5 kilos, with…

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Q: Assume that different groups of couples use a particular method of gender selection and each couple…

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Q: Assume that different groups of couples use a particular method of gender selection and each couple…

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Q: A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9…

A: We have given that a Binomial distribution with parameters p=65% = 0.65 , q=1-p = 0.35 and sample…

Q: The service time for customers coming through a checkout counter has mean 128 seconds and standard…

A: It is given that the service time has mean 128 seconds and standard deviation 6.3. Denote the random…

Q: According to a certain website, the average daily time spent on social networking by internet users…

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Q: An power company has 7 signal towers in an undisclosed location. The probability that a tower do not…

A: Solution

Q: (a) through​ (c) below. a. Find the mean and the standard deviation for the numbers of girls in…

A: sample size (n)=45proportion (p) =.5

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: (a)   Obtain the mean for the number of girls in groups of 49 births.   The mean for the number of…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: Approach to solving the question:The question is about the mean and standard deviation.Detailed…

Q: Based on a​ poll, among adults who regret getting​ tattoos, ​17% say that they were too young when…

A:

Q: The average time a person spends at the Barefoot Landing Seaquarium is 94 minutes. The standard…

A: We have given that.   X~N( μ , ?^2 )   μ=94 , ?=18   Z-score =( x - μ )/?

Q: About 20% of Americans are bilingual. A ramdom sample of 7 americans is drawn a. find the…

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Q: USA Today reported that about 20% of all people in the United States are illiterate. Suppose you…

A: Given thatP=20%=20100=210=0.20sample size=n=7a)Mean=μ=np=7×0.20=1.40standard…

Q: 5. The average American adult eats an average of 8.5 gallons of ice cream per year. Assume the…

A: Solution: Let X be the amount of ice cream eaten is normally distributed with mean μ=8.5 and…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: In this case, each couple has only options of "having a girl" (defined as success) or "not having a…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: a) There are 48 couples among which the probability of girl is 0.5. Hence, n = 48 and p = 0.5.

Q: Based on a​ poll, among adults who regret getting​ tattoos, 23% say that they were too young when…

A: Givenp=0.23n=10x~Binomial(n=10,p=0.23)P(X=x)=(nx)×px×(1-p)n-x     ; x=0,1,...,n

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: The number of couples consists in the group, The probability of a girl,

Q: There are three light bulbs in a chandelier. Probability that any light bulb will serve all year is…

A: Let X be the number of light bulbs that had to be changed in the chandelier within a year which…

Q: Assume that 35.4% of people have sleepwalked. Assume that in a random sample of 1490 ​adults, 565…

A: Given p=0.334 n=1490

Q: The probability that an individual is left-handed is 0.20. Let the random variable X be the number…

A: Given, probability that an individual is left handed is, p = 0.20 n = 20

Q: Five males with an​ X-linked genetic disorder have one child each. The random variable x is the…

A: Mean(μ)=∑x.P(X)standard deviation(σ)=∑x2.P(X)-(∑x.P(X))2 we know that total probability is equal to…

Q: Seventy percent of the students applying to a university are accepted. Using the Excel formula, what…

A: Given Information: Seventy percent of the students applying to a university are accepted.  That is,…

Q: The waiting time a customer spends in the airport luggage check-in is a random variable with mean…

A:

Q: The average salary for a civil engineering major is $75,000 with a standard deviation of $10,000. A…

A: Given the average salary for a civil engineering major is $75,000 with standard deviation of…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: a. μ= 25, σ=3.5b. low= 18, high= 32c. C. The result of 35 girls is significantly high since it is…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: a. The mean for the number of girls in groups of 40 births is, μ=np=40×0.5=20 Thus, the mean for the…

Q: The average salary for teachers is $50,000 with a std. deviation of $5,000. Find probability of…

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Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: In this context, it is known that p=0.5;n=50. a) The mean of the binomial distribution is given by,…

Q: A shipwrecked individual is marooned on a desert island with a supply of food, water, and a quarter.…

A: To find the least number of times "heads" is expected to be the outcome when flipping a quarter…

Q: 4. Discrete probability distributions #1 You may calculate the answers of the following questions…

A: This is a binomial distribution since the following conditions are satisfied:Fixed Number of Trials:…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.