I don't understand how to solve this
Want to see the full answer?
Check out a sample Q&A here
Related Statistics Q&A
Find answers to questions asked by students like you.
Q: About 75% of all female heart transplant patients will survive for at least 3 years. Sixty female…
A: The population proportion, p=0.75 and sample proportion, p^=0.75. The sample of 60 female patients…
Q: About 80% of all female heart transplant patients will survive for at least 3 years. Seventy female…
A: Click to see the answer
Q: What is the probability that a sample of 35 exams will have a mean score of 512 or more if the exam…
A: mu = 500xbar=512n = 35s = 170
Q: Assume the average height for all American women is 64 inches with a standard deviation of 2 inches.…
A: Click to see the answer
Q: An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with…
A: The mean is 1,300 and the standard deviation is 260 hours.
Q: About 70% of all female heart transplant patients will survive for at least 3 years. Seventy female…
A: Click to see the answer
Q: Given a test is normally distributed with a mean of 30 and a standard deviation of 6: What is the…
A: Let's assume X = score in the test. As given X ~ N ( mean = 30 , standard deviation = 6) It is…
Q: In a given year, the average annual salary of a cricket player was $205 000, with a standard…
A: The probability that the sample mean will be less than $210,000 is,…
Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…
A: Click to see the answer
Q: Suppose it is known that 80% people own a cellphone. If a random sample of 100 people were surveyed,…
A: Click to see the answer
Q: University students' blood pressure can be expected to follow a normal distribution with a mean of…
A: Given data,μ=85σ=20If n=4P(X<90)=?
Q: In 1999, the murder rates (per 100,000) for the 50 states and the District of Columbia had a mean of…
A: Click to see the answer
Q: Suppose that the average number of hurricanes is 32 per year with a standard deviation of 2.8 and…
A: Click to see the answer
Q: According to a 1998 poll conducted by Gallup of 5000 people, 32% of Americans fear putting their…
A: Click to see the answer
Q: The heights of 18 year-old men are approximately normally distributed, with a mean 68 inches and a…
A: The random variable height follows normal distribution. The population mean is 68. The population…
Q: For a Poisson distribution of drivers with mean = 20, what is the probability that the number of…
A: Given that the mean =μ= λ=20So, the standard deviation=σ=λ=20We have to find P(μ-2σ≤X≤μ+2σ)
Q: A city temperature is modeled as a normal random variable with mean and standard deviation both…
A: given data, Mean (μ) = 10 S.D(σ) =10Let X be normally distributed random variable P(X≤15) = ?
Q: The average public elementary school has 468 students with a standard deviation of 87. If a random…
A: Given: Mean=μ=468 Standard deviation=σ=87
Q: The average public elementary school has 468 students with a standard deviation of 87. If a random…
A: Normal distribution, also known as the Gaussian distribution, is a probability distribution that is…
Q: The diameter of a brand of tennis balls is approximately normally distributed, with a mean of 2.63…
A: Note: Please repost remaining subparts as i can answer only 3 subparts as per my policy Given data,…
Q: Proctor & Gamble reported that an American family of four washes an average of 1 ton (2000…
A: Introduction:Here, the suggested population mean, μ = 2,000 pounds.The population standard…
Q: The distribution of the number of viewers for the American idol television show follows a normal…
A: a) Probability that next week show will have between 30 and 34 million viewers: The probability that…
Q: Suppose that during any hour in a large department store, the average number of shoppers is 448,…
A: Given:
Q: A new species of dragonfly has an approximate body length of 45 mm with a standard deviation of 3…
A: Click to see the answer
Q: A waiter believes the distribution of his tips has a model that is slightly skewed to the right,…
A: A waiter believes the distribution of his tips has a model that is slightly skewed to the right,with…
Q: The distribution of heights for men in the United States is approximately normal, with a mean of μ =…
A: Where,
Q: Americans drank an average of 34 gallons of bottled water per capita in 2014. If the standard…
A: Let X be the number(in gallons) of bottled water Americans drank. Given that the variable is…
Q: Suppose the heights of students in a class follows normal distribution. The mean is 66 inches and…
A: It is given that the mean is 66 inches and the standard deviation is 5 inches.
Q: A politician takes an SRS of 75 citizens in a county to see what proportion of citizens sampled are…
A: A politician takes an SRS of 75 citizens in a county to see what proportion of with their standard…
Q: 44% of students in a class have black hair. If 66 students are chosen at random, what is the…
A: Click to see the answer
Q: A report announced that the median sales price of new houses sold one year was $211,000, and the…
A: Given: Sample mean = 272500 Std Deviation = 100000
Q: A firm's marketing manager believes that total sales for the firm next year can be modeled using a…
A: Given: x~N(μ,σ)μ=$2,500,000σ=$300,000
Q: In a study of work patterns, data from 669 subjects were collected. For the time spent in child…
A: We have given that, Let X be the random variable from normal distribution with mean (μ) = 23.08,…
Q: According to the Bureau of Labor Statistics, the average number of weeks an individual is unemployed…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: Since a population has a mean of 73.5 and a standard deviation of 2.5, what is the probability that…
A: We have to find given probability.....
Q: Suppose the heights of students in a class follows normal distribution. The mean is 60 inches and…
A: Click to see the answer
Q: Suppose the grades in a mathematics class are Normally distributed with a mean of 75 and a standard…
A: Introduction :- Here the grades in a mathematics class are Normally distributed with a mean of 75…
Q: Assume you have a binomial distribution. In an experiment with 100 trials and a probability of a…
A: Given that, n=100 p=1/2 =0.5 Standard deviation=?
Q: The distribution of heights for women in the United States is approximately normal, with a mean of μ…
A: Where,
Q: Assume that the variable is normally distributed, the average time it takes a group of senior high…
A: The normal distribution in the center is generally denser and basically less dense at tails. There…
Q: Business Weekly conducted a survey of graduates from several top MBA programs. On the basis of the…
A: we are suppose to answer three sub parts .
Q: From 1985 to 2006, the average height of an NBA player was 6 foot 7 (79 inches). Suppose the…
A: Click to see the answer
Q: a study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…
A: Given : μ = 8.4 , σ= 1.8 and n= 40 By Central Limit Theorem, x̅ follows a Normal distribution with…
Q: In a recent study, the Centers for Disease Control and Prevention reported that the diastolic blood…
A: given that mean(μ)= 80.5 standard deviation (σ) = 9.9
Q: On the Gulf Freeway at 7:00 AM, the average travel time from Beltway 8 to Downtown is 29.5 minutes…
A: We have given that the random variable X i.e. travel time is normally distributed with average(mean)…
Q: If the mean of the random variable with Poisson distribution is 4, which of the following is its…
A: Solution: Let X be the Poisson random variable with mean λ=4 X~P(λ=4) The formula for Poisson…
Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…
A: The binomial distribution discovered by James Bernoulli. If X is a discrete random variable with…
Q: What is the probability of selecting a score greater than 50 from a positively skewed distribution…
A: The given values are, Since the distribution of X is not a bell shaped distribution , and we use…
Q: . In order for an engineering graduate to enroll in a master’s program, the graduate studies…
A: GivenMean(μ)=420standard deviation(σ)=100
Q: The average cost per household of owning a brand new car is P5,000. Suppose that we randomly…
A: Click to see the answer
