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The amount of money a customer spends in one trip to the supermarket is known to...
The amount of time that a customer spends waiting at an airport check-in counter is a...
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n-49 independent customers is observed. Find the approximate probability that the average time waiting in line for these customers is (a) Greater than 10 minutes (b) Between 6 and 10 minutes (c) Less than 6 minutes
A 95% confidence interval for the average amount of money one customer spends on a single...
A 95% confidence interval for the average amount of money one customer spends on a single transaction at McDonalds is (6.52 , 9.12). The researcher reported that the confidence interval means that, "There is a 95% chance that the true average money spent on a single transaction (at McDonalds) is between $6.52 and $9.12". Is the researchers interpretation of the interval correct? If correct just answer yes. If you believe they are incorrect provide a correction.
How can I find the 60th percentile of an exponential distribution where a clerk spends on...
How can I find the 60th percentile of an exponential distribution where a clerk spends on average four minutes with each customer? let X equal the amount of time that a clerk spends with each customer and that is known to have an exponential distribution.
5. Suppose that the time (in hours) that Isabel spends on an untimed final exam exponential distribution with mean 1.25 hours, and the time that Javier spends follows an exponential distribution w...
5. Suppose that the time (in hours) that Isabel spends on an untimed final exam exponential distribution with mean 1.25 hours, and the time that Javier spends follows an exponential distribution with mean 1.75 hours. Assume independent of each other. (a) Determine the probability that Isabel finishes in less than 1 hour ollows an on the same exam that their times are (b) Determine the probability that Javier finishes in less than 1 hour.
5. Suppose that the time (in...
A supermarket awards coupons depending on how much a customer spends on groceries. For example, if...
A supermarket awards coupons depending on how much a customer spends on groceries. For example, if you spend $50, you will get a coupon worth eight percent of that amount. The following table shows the percent used to caleculate the coupon awarded for different amounts spent. Write a program that calculates and prints the value of the coupon a person can receive based on groceries purchased. Here is a sample run: Please enter the cost of your groceries: 14 You...
Suppose the amount of money people spend on board games each year is normally distributed with...
Suppose the amount of money people spend on board games each year is normally distributed with a mean of $75 and a standard deviation of $35. Find the probability that the amount of money your instructor spends on board games differs from the mean by less than $40 using the following steps. (a) What region of the normal distribution are you looking to find the area of? (to the left of a zscore, to the right of a z-score, between...
The amount of time that a drive-through bank teller spends on a customer is a random...
The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean u = 7.9 minutes and a standard deviation o = 3.6 minutes. If a random sample of 81 customers is observed, find the probability that their mean time at the teller's window is (a) at most 7.3 minutes; (b) more than 8.7 minutes; (c) at least 7.9 minutes but less than 8.3 minutes. Click here to view page 1 of...
1. Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned)...
1. Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $24 and the estimated standard deviation is about $7. Is it necessary to make any assumption about the x distribution? Explain your answer. a. It is not necessary to make any assumption about the x distribution because μ is large. b. It is necessary to assume that x has...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $21 and the estimated standard deviation is about $9. (a) Consider a random sample of n = 40 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. From the central limit theorem, what can you say about the probability distribution of x, the average amount...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) ...
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about $42 and the estimated standard deviation is about $9. (a) Consider a random sample of n = 100 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. From the central limit theorem, what can you say about the probability distribution of x, the average amount...
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n-49 independent customers is observed. Find the approximate probability that the average time waiting in line for these customers is (a) Greater than 10 minutes (b) Between 6 and 10 minutes (c) Less than 6 minutes
5. Suppose that the time (in hours) that Isabel spends on an untimed final exam exponential distribution with mean 1.25 hours, and the time that Javier spends follows an exponential distribution with mean 1.75 hours. Assume independent of each other. (a) Determine the probability that Isabel finishes in less than 1 hour ollows an on the same exam that their times are (b) Determine the probability that Javier finishes in less than 1 hour.
5. Suppose that the time (in...
A supermarket awards coupons depending on how much a customer spends on groceries. For example, if you spend $50, you will get a coupon worth eight percent of that amount. The following table shows the percent used to caleculate the coupon awarded for different amounts spent. Write a program that calculates and prints the value of the coupon a person can receive based on groceries purchased. Here is a sample run: Please enter the cost of your groceries: 14 You...
The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean u = 7.9 minutes and a standard deviation o = 3.6 minutes. If a random sample of 81 customers is observed, find the probability that their mean time at the teller's window is (a) at most 7.3 minutes; (b) more than 8.7 minutes; (c) at least 7.9 minutes but less than 8.3 minutes. Click here to view page 1 of...
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