66% of kids are worried about going back to school. In a random sample of 75 kids, what is the probability that 55 or more kids are worried about going back to school? Assume independence between variables.

Q: A nylon connector manufacturing plant yields 14 % defective items. If 1000 connectors are randomly…

A: Here, the sample size is n=1000 and the probability of defective items is 0.14. Consider, μ=np…

Q: pollutants, but results in false positives for 18% of cars that emit quantity considered normal.…

A:

Q: Suppose a basketball player makes 56.1% of shots and that the probabilty of making each shot is…

A:

Q: If a seed is planted, it has a 90% chance of growing into a healthy plant. If 10 seeds are planted,…

A: Let us denote X= number of plants that do not grow healthy n= number of trials= 10 probability of…

Q: thirty four percent of us adults have very little confidence in newspapers. You randomly select 8 US…

A: Binomial distribution:The binomial distribution gives the probability of number of successes out of…

Q: The probability that an adult possesses a credit card is .35. A researcher selects three adults at…

A: Givenp=0.35n=3x~Binomial(n=3,p=0.35)P(X=x)=Cxnpx(1-p)n-x    ; x=0,1....n

Q: In a recent year, 13% of businesses have eliminated jobs. If 6 businesses are randomly sampled, what…

A: Let us denote X=the number of businesses that have eliminated jobs. n=sample size=6 p=probability of…

Q: A zoo has a collection of 400 flamingos. 180 of these flamingos are red. One day, a fence blew down…

A: Given : A zoo has a collection of 400 flamingos. 180 of these flamingos are red.

Q: A study showed that 64.5​% of occupants involved in a fatal car crash wore seat belts. Of those in…

A: Solution: Let A be the event that  occupants involved in a fatal car crash wore seat belts. P( A)=…

Q: In 2019 about 45% of people watch over 3 hours of tv a week. Suppose 8 people were selected at…

A: It is given that n = 8 and p =0.45.

Q: The proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Given: The probability of eligible voters in the next election who will vote for the incumbent is…

Q: If a seed is planted, it has a 85% chance of growing into a healthy plant. If 7 seeds are planted,…

A: The random variable X is the number of seeds that don't grow The probability of the seed growing is…

Q: The American Automobile Association reports that of the fatal car and truck accidents 54% are caused…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: If a seed is planted, it has a 85% chance of growing into a healthy plant. If 7 seeds are planted,…

A:

Q: Twenty percent of all undergraduates at a university are chemistry majors. In a random sample of…

A: Given information:Population proportion (p) = 20%                                         p =…

Q: 42% of US adults have very little confidence in newspapers. You randomly select 10 US adults. Find…

A: Given that, 42% of US adults have very little confidence in newspapers. Sample size, n = 10

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

A: Given that the 70% chance of growing into a healthy plant. P(growing a plant)=0.70 P(not…

Q: One hundred students were asked whether they liked certain candy flavors. It was found that 54 54…

A: Obtain the probability that a randomly selected student liked neither flavor. The probability that a…

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 11 seeds are planted,…

A: Given that, The sample size is, n = 11 The probability of growing into a healthy plant is, 0.95 The…

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 12 seeds are planted,…

A: Given that, Probability(grow) = 95% = 0.95 Probability(don't grow) =  0.05 Sample size = 12

Q: a new vaccine for tropical illnesses has the probability of negative side effects on 0.122% of…

A:

Q: The USDA reports that 31% of four-member households spend less than $100 per week on groceries.…

A: Given p=31%=0.31 n=600 Here, the sample size is large. Hence, we can use normal approximation.…

Q: If 11 seeds are planted, what is the probability that exactly 4 don't grow?

A:

Q: It has been reported that 48% of people text and drive. A random sample of 60 drivers is drawn. Find…

A: The z-score is calculated by using: Where,

Q: If a seed is planted, it has a 75% chance of growing into a healthy plant. If 8 seeds are planted,…

A:

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 7 seeds are planted,…

A: The probability that the plant doesn't grow into a healthy plant (p) .

Q: A sample survey interviews an SRS of 267 college women. Suppose that 70% of college women have been…

A: The distribution of data follows normality can be checked using the two conditions :  np≥5 n1-p≥5…

Q: The probability that an adult possesses a credit card is .65. A researcher selects two adults at…

A: P(posseses credit card ) = p = 0.65 So q  =1-p = 0.35 Select two at random

Q: If a seed is planted, it has a 60% chance of growing into a healthy plant. If 8 seeds are planted,…

A: We have given that  Number of trials n=8 Success of probability p =0.40 Failure of probability q=…

Q: After vaccination, the probability of getting flu is 0.15. Without vaccination, it is 0.4. In a…

A: Given Information: After vaccination, probability of getting flu is 0.15. Without vaccination,…

Q: 65% of men consider themselves to be knowledgeable football fans. If 6 men are selected randomly…

A: given that, 65% of men consider themselves to be knowledgeable football fans. Let, X=denotes the…

Q: A person conducting telephone surveys must get 3 more completed surveys before their job is…

A: There is 20% chance of completing the phone survey

Q: One manufacturer claims that only 10% of its total production is defective. 28 items are randomly…

A: Let, X=the number of defectives n=number of trial=28  p=probability of success=10%=0.10   X follows…

Q: If a seed is planted, it has a 65% chance of growing into a healthy plant. If 6 seeds are planted,…

A:

Q: The probability that an adult possesses a credit card is .15. A researcher selects two adults at…

A: GivenLet A be the adult possesses a credit cardThe probability that an adult possesses a credit card…

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.