The mean amount of time it takes a kidney stone to pass is 16 days and the standard deviation is 5 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. Round all answers to 4 decimal places where possible. %3!

Q: In 1980 and again in 2010, a Gallup poll asked a random sample of 1000 US citizens "Are you in favor…

A:

Q: The table to the right classifies a stock's price change as up, down, or no change for both today's…

A: There are two categorical variables which are Price Change Today and Price Change Previous Day. We…

Q: Find the probability that the mean of a month’s reviews will take Yoonie from 3.5 to 4.25 hrs.…

A: It is given that μ = 4σ = 1.2n = 16

Q: A baseball player has a batting average of 0.313. what is the players expected number of hits in her…

A: Solution: Given data p = 0.313 n =19 To find : Expected number of hits in her next 19 times at bat?…

Q: elaine gets quiz grades of 77,85, and 66. she gets a 61 on her final exam. find the weighted mean if…

A: It is given that the quiz grades are 77, 85, and  66. The final grade is 61.

Q: In the past, trout in Clearwater Creek were 14.5 inches long on average. A recent sample of 36 trout…

A:

Q: The question is, What is the level of measurement and is it a discrete or continuous variable?…

A: Here, we have given that Highest year of school completed 0-20. Actual number of years 97. IAP, 98.…

Q: The heights of a group of men averaged 69 inches and followed the normal curve. The 91st percentile…

A: Solution: Let X be the height of group of men. μ= 69 inches  Average height of men.  The 91st…

Q: Españ A biologist is studying rainbow trout that live in a certain river and she estimates their…

A:

Q: Suppose X - N (-9,4). Between what a values does 95.48% of the data lie? The range of a values is…

A:

Q: Today, the waves are crashing onto the beach every 4.6 seconds. The times from when a person arrives…

A: The mean of this distribution is  a midpoint between the ends.  Mean = (4.6 + 0)/2 = 2.3 seconds

Q: What is the probability a woman has breast cancer given that she just had a positive test?

A: Given,  1% women have breast cancer 85% chance of having breast cancer and test positive(true…

Q: Suppose an estimator for a window supplier made a mistake in measuring by inputting the width of a…

A: Is cost of window is p dollar/inch2 And lengh of window is l Then total lose =lp dollar

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: Answer X               Y 6.00           96.50           266.75           557.50           628.00…

Q: Z score of 0.045

A:

Q: The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: Interval…

A: According to the given data, first form the following table:IntervalFrequency(fi)Midpoint(xi…

Q: 1.128 Find an SAT percentile. Reports on a student's ACT or SAT results usually give the percentile…

A: Suppose a random variable X, defines the SAT scores of a student.

Q: c. Calculate the value of the test statistic. z= (Round to two decimal places as needed.)

A:

Q: ) 5.2°F per month

A:

Q: The size of a hole in a bursting balloon is modelled by the equation r = 54(4/3) where r is the mean…

A:

Q: How do I determine each individual time on this box plot? i dont know how Im supposed to answer the…

A: Given box plots: For reading the exact values mark equal divisions on the minute scale and try to…

Q: In coastal North Carolina, Information regarding changing tides is critical for fishing and other…

A: The tide data for a lighthouse in North Carolina is given in the table. It shows the time of tide…

Q: Today, the waves are crashing onto the beach every 4.6 seconds. The times from when a person arrives…

A: 75 % of 4.6 seconds = 0.75*4.6 = 3.45 Therefore, 75% of the time a person will wait at least 3.45…

Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!