(a) In 2,252 live deliveries, what is the probability of at least 56 twin births? (Use Excel or Appendix C to calculate probabilities. Round standard deviation to 2 decimal places. Round your answer to 4 decimal places.)   Probability _____         (b) Fewer than 39? (Use Excel or Appendix C to calculate probabilities. Round standard deviation to 2 decimal places. Round your answer to 4 decimal places.)

Q: 16. The reported cancer rates for men ages 65 and older is 23%. Assume this estimate is the true…

A: Given : p = 0.23 n = 25

Q: sample of 76 scores is chosen. Use the TI-84 Plus calculator. Part 1 of S (a) What is the…

A:

Q: A police department reports that the probabilities that 0,1,2,3 burglaries will be reported in a…

A:

Q: You randomly select 25 teachers. What is the probability that their mean salary is more than $70000,…

A: Given thatRandomly select 25 teachersPopulation mean salary is 56000Standard deviation 15000To…

Q: Truck delivery fleet travel a mean of 110 miles per day with a standard deviation of 25 miles per…

A: Obtain the Z-score for the random variable X equals 97. The Z-score for the random variable X equals…

Q: According to a Gallup Poll, the probablity that a Republican approves of the death penalty is 69%.…

A: The probability that Republicans approve of the death penalty is 69%.p=0.69wants to calculate…

Q: Woodpecker, Inc., stock has an annual return mean and standard deviation of 12.6 percent and 44…

A: Population Mean µ = 12.6% Standard deviation (σ) = 44% Let X be the monthly return on Woodpecker,…

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A: Given: Mean=1487 standard deviation=307

Q: In the accompanying table, the random variable x represents the number of televisions in a household…

A: A distribution is said to be valid probability distribution, if the sum of all probabilities is…

Q: Empirical probabilities are deeply rooted in probability. essentially percentages based on a large…

A: Empirical probability or experimental probability is determined how often an event has been observed…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300⁢lbs and the…

A:

Q: The population mean annual salary for an electrician is $46,700.A random sample of 42 electricians…

A:

Q: 90% of all children spend at least how many hours per day unsupervised? hours.

A: We have given that.   X~N( μ , ?^2 )   μ=2.9 , ? =1.3   Z-score =( x - μ )/?

Q: The amount of time, in seconds, a cashier spends with a customer during lunch time at a fast food…

A: The average amount of time spent with a customer is 160 seconds.

Q: 9. The forecast for Monday shows an 80% chance of rain. What is the probability that it will not…

A: Probability

Q: what is the probability that you will receive a grade that is between 89 and 97 on this exam?

A: The mean of grades for the latest statistics exam is 93 and SD is 4.

Q: According to a 2009 Reader's Digest article, people throw away about 7% of what they buy at the…

A: Given: Population proportion (p) = 7%  = 0.07    Sample proportion                  Sample size (n)…

Q: IQ scores for students at a prestigious university are normally distributed with a mean of 110 and a…

A:

Q: Billiard tables have mean degree of balance 0 and standard deviation 1. What is the probability…

A: It is given that the degree of balance is normally distributed with mean 0 and standard deviation is…

Q: Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are…

A: Given information- Population mean, µ = $12,837 per year Population standard deviation, σ = $1500…

Q: The cafeteria records that 67% of students buy pizza with a standard deviation of .03 If you took a…

A: Given: p=67% and σ=0.03. Now, if a sample of 100 is taken, then standard deviation of sample will…

Q: An operation manager at an electronics company wants to test their amplifiers. The design engineer…

A: Obtain the probability that the mean amplifier output would differ from the population mean by…

Q: If the probability that a randomly chosen college student takes statistics is 0.34, then what is the…

A: The probability that a randomly chosen college student takes statistics is 0.34. The probability…

Q: NBA basketball players have a mean height of 79 inches and a standard devaiation of 3.5 inches.…

A: Solution: Let X be the height of NBA basketball player. From the given information, µ=79 inches and…

Q: The standard deviation is also called the give-or-take value. True

A: we have to state that the given statement is true or false.  statement : The standard deviation is…

Q: The Coffee shop's mean sales are $2000 a day, with a standard deviation of $1000. what're the…

A: GivenMean(μ)=2000standard deviation(σ)=1000

Q: Temperatures a city are distributed approximately normal, with a mean of 61 degrees fahrenheit and a…

A: Given data,Mean μ=61sd    σ=6P(X<70.5)=?

Q: Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are…

A: Given that ; μ = $ 12837 ? = $ 1500 X = $ 17000 To find P( x < 17000) =  ? ?  P( x > 17000) =…

Q: In A-1. The 8th hr. Probability was cut off. I would need that answer as well. In C. The mean and…

A: a-1. The probability distribution for the number of hours parked is, Hours Probability 1…

Q: The probability that an email is spam is 74%. If a spam filter analyzes two emails, what is the…

A: It is given that, the probability that an email is spam is 74%.

Q: According to BusinessWeek, 44% of advertisers claim they have been a victim of internet click fraud.…

A: The mean is, μ=np=120×0.44=52.8 The mean is 52.8. The standard deviation is,…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: The Powerball lottery jackpot has a winning probability of 1/189,000,000.  If you only consider the…

A: From the given information, Consider, X is the random variable that shows the net gain.  Pr(winning…

Q: What is the probability the pedestrian was not intoxicated

A: Given data The table summarizes results from 990 pedestrian deaths   Driver  intoxicated?…

Q: The owner of a convenience store has determined that their daily revenue has mean $7,200 and…

A:

Q: A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly…

A: given data, normal distributionμ=73σ=7.8n=24we have to find out the given proabbility .

Q: Please solve the attached question, thanks

A: Approach to solving the question:1. We know that approximately 66.6% of the 20 million people taking…

Q: Example: A coin is tossed five times and the number of heads is recorded. Find the probability…

A: It is given that a coin is tossed five times.The random variable is assumed to be the number of…

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.