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Let X represent the amount of gasoline (gallons) purchased by a randomly selected customer at a...
Let X represent the amount of gas, in gallons, drivers put in their cars when fueling...
Let X represent the amount of gas, in gallons, drivers put in their cars when fueling at the small downtown gas station. The model for this variable X is uniformly distributed between 4 and 12 gallons. For this uniform distribution the mean amount of gas put in a car is 8 gallons and the standard deviation is about 2.3 gallons. Your friend is looking at this model for the amount of gas and says: "I remember some rule from my...
7. The mean number of gallons of gasoline pumped per customer at Ray's Marathon Station is...
7. The mean number of gallons of gasoline pumped per customer at Ray's Marathon Station is 9.5 gallons with a standard deviation of 0.75 gallons. The median number of gallons pumped is 10.0 gallons. The arithmetic mean amount of time spent by a customer in the station is 6.5 minutes with a standard deviation of 2 minutes. a. According to Chebyshev's Theorem, what proportion (percent) of the customers spend between 3.30 minutes and 9.70 minutes at the station? b. According...
14. Let X represent the amount of money a randomly selected SLCC student has in their...
14. Let X represent the amount of money a randomly selected SLCC student has in their pocket, where u=5 and 0-4. Suppose we take samples of size 16, and calculate the mean amount of pocket money for each sample. Describe the distribution of X. (What are the mean and standard deviation? What is the shape of the distribution?)
The owner of a gasoline station wants to determine i# the average amount of gasoline purchased...
The owner of a gasoline station wants to determine i# the average amount of gasoline purchased by his customers is greater than 10 gallons. He randomly selects 60 customers during a certain week of 60 customers had an average amount purchased of 11.3 gaions and a standard What is the value of tc, the test statistic used to test his hypothesis? Round your answer to places You Answered This sampla deviation ot 3.1 aons
5. The amount of regular unleaded gasoline purchased every week at a gas station near WSU...
5. The amount of regular unleaded gasoline purchased every week at a gas station near WSU follows a normal distribution with mean 50000 gallons and standard deviation 10000 gallons. The starting supply of gasoline is 74000 gallons, and there is a scheduled weekly delivery of 47000 gallons. a) Find the probability that, after 11 weeks, the supply of gasoline will be below 20000 gallons.
Let X be the number of packages being mailed by a randomly selected customer at a...
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. x 1 P(x) 0.2 2 0.4 3 4 0.3 0.1 (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1.5 35 (b) Refer to part (a) and calculate PX $ 2.5). (c) Again...
Let X be the number of packages being mailed by a randomly selected customer at a...
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. 1 0.3 2 0.4 3 0.1 4 0.2 p(x) (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1 1.5 2 2.5 3 3.5 4 POCO (b) Refer to part (a) and calculate...
Let X be the number of packages being mailed by a randomly selected customer at a...
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. * 1 p(x) 0.2 2 0.4 3 4 0.3 0.1 (a) Consider a random sample of size n 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X 1 1. 5 2 3.5 PC) 04 125 x 16 X (b) Refer to part...
6. (Sec. 5.4) Let X denote the price for a randomly selected bouquet of 10 tulips....
6. (Sec. 5.4) Let X denote the price for a randomly selected bouquet of 10 tulips. Suppose the mean value of X is $17.50 and the standard deviation of X is $6.00. (a) Is it plausible that X is normally distributed? Explain why or why not. (b) For a random sample of 55 such bouquets, what is the approximate probability that the sample mean bouquet cost is between $15.00 and $25.00? (c) For a random sample of 55 such bouquets,...
The Gas-N-Clean Service Station sells gasoline and has a car wash. Fees for the car wash...
The Gas-N-Clean Service Station sells gasoline and has a car wash. Fees for the car wash are $1.25 with a gasoline purchase of $10.00 or more and $3.00 otherwise. Three kinds of gasoline are available: regular at $2.89, plus at $3.09, and super at $3.39 per gallon. User Request: Write a program that prints a statement for a customer. Analysis: Input consists of number of gallons purchased (R, P, S, or N for no purchase), and car wash desired (Y...
7. The mean number of gallons of gasoline pumped per customer at Ray's Marathon Station is 9.5 gallons with a standard deviation of 0.75 gallons. The median number of gallons pumped is 10.0 gallons. The arithmetic mean amount of time spent by a customer in the station is 6.5 minutes with a standard deviation of 2 minutes. a. According to Chebyshev's Theorem, what proportion (percent) of the customers spend between 3.30 minutes and 9.70 minutes at the station? b. According...
14. Let X represent the amount of money a randomly selected SLCC student has in their pocket, where u=5 and 0-4. Suppose we take samples of size 16, and calculate the mean amount of pocket money for each sample. Describe the distribution of X. (What are the mean and standard deviation? What is the shape of the distribution?)
The owner of a gasoline station wants to determine i# the average amount of gasoline purchased by his customers is greater than 10 gallons. He randomly selects 60 customers during a certain week of 60 customers had an average amount purchased of 11.3 gaions and a standard What is the value of tc, the test statistic used to test his hypothesis? Round your answer to places You Answered This sampla deviation ot 3.1 aons
5. The amount of regular unleaded gasoline purchased every week at a gas station near WSU follows a normal distribution with mean 50000 gallons and standard deviation 10000 gallons. The starting supply of gasoline is 74000 gallons, and there is a scheduled weekly delivery of 47000 gallons. a) Find the probability that, after 11 weeks, the supply of gasoline will be below 20000 gallons.
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. x 1 P(x) 0.2 2 0.4 3 4 0.3 0.1 (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1.5 35 (b) Refer to part (a) and calculate PX $ 2.5). (c) Again...
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. 1 0.3 2 0.4 3 0.1 4 0.2 p(x) (a) Consider a random sample of size n = 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X. 1 1.5 2 2.5 3 3.5 4 POCO (b) Refer to part (a) and calculate...
Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows. * 1 p(x) 0.2 2 0.4 3 4 0.3 0.1 (a) Consider a random sample of size n 2 (two customers), and let X be the sample mean number of packages shipped. Obtain the probability distribution of X 1 1. 5 2 3.5 PC) 04 125 x 16 X (b) Refer to part...
6. (Sec. 5.4) Let X denote the price for a randomly selected bouquet of 10 tulips. Suppose the mean value of X is $17.50 and the standard deviation of X is $6.00. (a) Is it plausible that X is normally distributed? Explain why or why not. (b) For a random sample of 55 such bouquets, what is the approximate probability that the sample mean bouquet cost is between $15.00 and $25.00? (c) For a random sample of 55 such bouquets,...
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