Approximately 7% of the population has the O- blood-type.  If you drew a random and independent sample of 2065 people, what proportion of the sample are expected to have O- blood?    Write your answer as a decimal.

Q: Approximately 10% of students have a composite score below what level

A: If X is the composite score of the students, then we need to search for a x, such that P[X≤x]=0.1.

Q: Members of fraternities and sororities are required to volunteer for community service. Do…

A: When one variable not related to the other then we say they are independent observation. If the…

Q: Which group has the largest percentage of people who prefer to travel by automobile? O child O teen…

A: From the diagram Percent of automobile prefer by child=5 Percent of automobile prefer by teen=25…

Q: What fraction of survey respondents identified themselves as Republicans? What fraction of survey…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks Given :

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: Let A be the event that student had Math SAT of 700 or more Therefore, PA=0.36 find The probability…

Q: How many patients were lost to contact?

A: The given table shows the year of death, year of last contact, time and number at risk, number of…

Q: A hot topic of debate is whether the legal driving age should be raised to eighteen. From a random…

A: It is tested whether majority of the Americans believe the legal driving age should be raised to 18.…

Q: What percent of students had an IQ of at least 120​?

A: From the given histogram, the frequency table can be observed as shown below:

Q: Which is a statistical question? How old was George Washington when he became president? How many…

A: Statistical Questions:-    A question is a statistical question of it can be answered with date that…

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: An IQ score for which 15% of the population has a higher score and 85% have a lower score…

A:

Q: 3. In a Gallup Pool, 52% of 1038 surveyed adults said that second hand smoke is "very harmful". What…

A: Following information is given:   Total number of people survey = 1038 Percentage of people who said…

Q: At a local Dunkin’ Donuts, a survey showed that out of 1,090 customers eating lunch, 327 ordered…

A:

Q: How many people at the clinic have blood type AB? Which blood type does the least number of people…

A: A survey is a method of collecting data from the respondents to collect information for the…

Q: percent of those that play FIFA also play DOTA?

A: Here use Bayes rule

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: se a study revealed 5*

A: Given, a study revealed 57% of all subjects possessed trait A, 28% possessed trait B, and…

Q: A September, 2014, survey indicated that 53% of U.S. adults aged 18–29 used the social media…

A: Let total number of adults of U.S., aged 18-29, be x.   Given: Adult used instagram=53% of x=2Adult…

Q: What percentage of scores would be above 567?

A:

Q: 41 percent of young adult males play video games. 39 percent of young adult males have a full-time…

A: It is given that, 41% of young adult males play video games i.e. P(young adult pay video games) =…

Q: In October 2017, the Gallup Poll asked a sample of 10281028 U.S. adults, "Are you in favor of the…

A: Given, n=1028 Consider that the population standard deviation is σ, the level of significance is α.…

Q: In a survey of 1536 adults, 36% responded "yes" to the survey question. How many adults answered…

A: From the provided information, Sample size (n) = 1536 36% responded “Yes” to the survey question.…

Q: If 90% of the athletes who test positive for steroids in fact use them, and 10% of all athletes use…

A:

Q: The 1994 Northridge, California earthquake measured about 5,011,000 times as intense as a 0-level…

A:

Q: We made a survey with the number of people in a household and the number of times they get sick…

A: Solution: Let x be the number of people in a household  y be the number of times they get sick in a…

Q: A telecommunications company conducted a survey about cell phone companies. Of 1800 randomly and…

A: given  x = 1275 preferred AT&T to Sprint n =Of 1800 randomly and independently selected people…

Q: In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain…

A:

Q: A company took a survey about its new product. 7,200 people liked the new product and 800 people did…

A:

Q: 35% of a sample of employees are vaccinated.if 390 are not vaccinated, how many are vaccinated

A:

Q: How many success in the sample? How many failures in the sample? ? What size sample does the…

A: Answer:-  Given, n=1800

Q: A management survey for a company surveyed 235 employees. 105 of the employees surveyed were…

A: Given, Number of employees= 235 Female employees= 105 Male employee % =?

Q: A random sample of 302 Californians found that 129 support Measure A. Build a 88% Cl for the…

A: Given that  Random sample size (n) = 302 Supported measure A = 129   Sample proportion (p) =…

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: To calculate the number defective bulbs in the batch of 3000 light bulbs. A sample contains 125…

Q: Find the probability of selecting either a non-smoker or a woman when you select a person at random…

A:

Q: Can you think of an area where it might not be practical, for a variety of reasons, to sample 100%…

A: Yes, there are several areas where we cannot sample 100% of the population being covered to test.

Q: What percentage of people are men who like movies?

A:

Q: In a recent survey of 180 people who drink coffee or tea, it was found that 137 drink coffee and 74…

A:

Q: Carter conducted an experiment to see how many people who passed by him at the park were wearing…

A: Given,          Carter conducted an experiment to see how many people who passed by him           at…

Q: In a sample of 169 students, 16 said they have donated blood. What percent of the students have…

A: Given that, In a sample of 169 students, 16 said they have donated blood.

Q: a survey showing the popularity of the current governor gives an approval rating between 42% and…

A:

Q: How many performers earned exactly 1 star?

A: Given: Total number of performers, N = 140 Percentage of performers got 1 star = 15%

Q: many males are in the sample?

A: A survey of 500 people is shown in a tree diagram M-male F-female E-eat breakfast D-does do not eat…

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: All the given data is shown in the tree diagram

Q: In a Harris poll of 2302 adults, 14% said they have a tattoo. Approximately how many adults have a…

A: Given information- We have given that in a Harris poll of 2302 adults, 14% have a tattoo. We have to…

Q: A study in 2014 indicated that 19% of American households have a landline telephone that they do not…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: The national profession exam for registered nurses, the NCLEX, has pass a rate of 85% for the first…

A: According to the given information in this question It follows binomial distribution with parameters…

Q: A local school reports that the average GPA is 2.66 (σ =0.40). What is the effect size if the sample…

A: Given information- Population mean, µ = 2.66 Population standard deviation, σ = 0.40 Sample mean of…

Q: Nielsen Media Research surveys TV-watching habits and provides a list of the 20 most-watched TV…

A:

Q: According to the Business and Financial Times newspaper, through January 25, 2018, majority of…

A: Given that there are 162 companies. The number of companies showed beat estimates is 104. The number…