A recent study had shown that 28% of 18-34 year olds check their Facebook/Instagram feeds before getting out of bed in the morning. If we sampled a group of 150 18-34 year olds, what is the probability that the number of them who checked their social media before getting out of bed is: A) at least 34? B) no more than 54? Use the Normal Approximation to the Binomial distribution to answer the question.

Q: At an inspection line, several motors are inspected. It is known that defects between motors are not…

A: Solution-: Given : λ=5 We find, (a) P[the first defective motor is the fifth motor that you…

Q: Based on surveys, 97% of students own cell phones.  What is the probability that 10 randomly…

A: Given,p=0.97n=10X=no.of students own cell phones.X~Binomial(n=10 , p=0.97)P(X=x)=Cxn px(1-p)n-x ;…

Q: The percentage of female Americans 25 years old and older who have completed 4 years of college or…

A:

Q: The conditional algebritis affects 15% of college professors. The blood test for algebritis…

A: From the given information, The percentage of affect is 15% That is, P(affect)=0.15 and P(not…

Q: Twenty-eight percent of U.S. employees who are late for work blame oversleeping. You randomly select…

A: Solution: Let X be the number of U.S. employees who are late for work and blame oversleeping. The…

Q: Construct a binomial distribution

A:

Q: What is the probability of selecting a sample with the proportion of females being 0.56 or greater?

A: here p =  proportion of female in US =  0.51  n = 500

Q: The chances of an error occurring in any single line of code is found to be 0.001 (0.1%). If a…

A: Giventhe no. of error occuring in any single line of code is 0.001The no. of error for 500 lines is…

Q: Forty families gathered for a fund-raising event. Suppose the individual contribution for each…

A: Suppose a random variable x defines the contribution by each family.

Q: Suppose 56% of politicians are lawyers. If a random sample of size 564 is selected, what is the…

A: Given: 56% of politicians are lawyers that is proportion (p) = 0.56 Sample size (n) = 564

Q: The quality of computer disks is measured by the number of missing pulses. Fora certain brand of…

A: Binomial distribution: Consider a random experiment involving n independent trials, such that the…

Q: Based on historical data, your manager believes that 32% of the company's orders come from…

A: The probability that the sample proportion is greater than than 0.45 = 0.00352

Q: A survey was conducted to determine the proportion of Grade 11 students who engage in under-age…

A: We have given that p = 0.70 n = 100 We have to calculate  P(x> 0.65)

Q: If a seed is planted, it has a 70 %chance of growing into a healthy plant. If 10 seeds are planted,…

A: Given data, p=0.70 (grows healthy plant) If n=10 then P(X=1) doesnot grow=?

Q: f all the registered automobiles in Colorado, 10% fail the state emissions test. Ten automobiles are…

A: Hi there! Thanks for the questions. Since, there are multiple subparts, we have solved first three…

Q: A hotel manager believes that 10% of the hotel rooms are booked. If the manager is accurate, what is…

A: Given that 10% of the hotel rooms are booked. That is p=0.10 And there are sample of 454 rooms. That…

Q: A recent Kellogg survey shows that approximately 34% of Americans eat breakfast. Suppose Alex takes…

A: Solution

Q: When a sample contains 100 or more cases, what is the correct probability distribution to use?

A: Given: When a sample contains 100 or more cases, what is the correct probability distribution to…

Q: A. If 75% of high school students are able to pass a stats test, find the mean, variance, and…

A: (A). It is given that 75% of high school students are able to pass a stats test. Thus,

Q: 21% of U.S. employees who are late for work blame oversleeping. You randomly select four U.S.…

A: From the provided information, 21% of U.S. employees who are late for work blame oversleeping that…

Q: Five cards are dealt from a deck of cards without replacement. The number of hearts is counted. Why…

A: Introduction to binomial distribution:Consider a random experiment involving n independent trials,…

Q: What is the probability that a randomly chosen individual would be less than 64.5 years of age? Show…

A: Population Mean(µ) = 65Population Standard deviations (σ) = 2X ~ N (µ, σ )= N(65, 2)

Q: A recent study reported that the prevalence of hyperlipidemia is 30% in children. If 12 children…

A: Probability of Hyperlipidemia(p) = 0.3Total number of children(n)=12Number of children suffering…

Q: In a recent year, a fact sheet for the state of Pennsylvania stated that 72.6% of all public high…

A: Given: Population proportion p=0.726 Sample size n=400   a) Mean Mp^=0.726   b) Standard deviation…