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1. The weight of a randomly selected shipping container follows an unknown distribution with mean 12 tons and standard deviation 2 tons. Your cargo ship always carries a load of 100 randomly selected shipping containers.
(a) What is the probability the load weighs more than 1231 tons?
(b) What is the 90th percentile of load weights?
2. Consider the the population [1,3]. Suppose you take all possible samples of size n=3 with replacement. What is the sampling distribution of the sample total?
3. LED light bulbs are manufactured with an average lifespan of 16 years and the bulb lifespans arenknown to follow an exponential distribution.
(a) What is the probability that a bulb will last longer than 14 years?
(b) What is the 50th percentile (or median) of bulb lifespans?
find the number of chocolate chips a cookie should contain on the average if it is desired that the probability of a
Use the data above to find a 90% confidence for the population average, µ, of the percentage of hospitals providing at least some charity care.
Copying times average 8 minutes according to an exponential distribution. What are the operating characteristics for this system?
a correlation coefficient has an associated probability value of .02 then1. the results are important2. the hypothesis
Suppose that in a lottery you choose 5 numbers out of 47. Five numbers are then drawn and you win a prize if you have at least 3 of the 5 numbers. What is the probability that you win something?
Doctors often use body mass index (BMI) to measure obesity. BMI is weight/height2, where weight is measured in kilograms and height in meters.
Simplification by Factorization and finding domain-What happens when x is 6 or 3. What is the domain if x can only be 6 or 3?
She concluded that encouraging teachers to be properly attired will increase academic performance. Do you agree or disagree with her conclusion? Support your answer.
suppose that a stat150 student randomly sampled 500 american high school students to study sat math scores. the math
In forecasting, MacDonald's Wing® discovered that when it opened its store to the public, it was able to sell 5,000 parachutes in the first year. Given the equation; y=a+bx. Where ‘y' represents the number of sales and ‘a' is the number they start..
Assuming that colors are chosen independently of each other for inclusion in new fashions, what is the probability that the designer will be successful with at least one of her colors?
You are given the choice of three doors. Behind one is a new car and the others hide a barnyard animal for you to keep. After you choose door number one, your host (Monty) opens door three to reveal a goat.
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