After a repeated observation, it has been determined that the waiting time at the drive through...
After a repeated observation, it has been determined that the waiting time at the drive through window of a local bank is skewed left, with a mean of 3.5 minutes and a standard deviation of 1.9 minutes. a random sample of 100 customers is to be taken. What is the probability that the mean of the sample will exceed 4 minutes? show calculation
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After a repeated observation, it has been determined that the
waiting time at the drive through...
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 3.2 minutes and a standard deviation a = 1.6 minutes. If a random sample of 64 customers is observed, find the probability that their mean time at the teller's window is A. at most 2.7 minutes; B. more than 3.5 minutes; C. at least 3.2 minutes but less than 3.4 minutes (10 pts. each, 30 pts. total)
1. At a fast food restaurant, the waiting time at the drive-through window has an average of...
1. At a fast food restaurant, the waiting time at the drive-through window has an average of 3 minutes, with a standard deviation of 0.8 minutes. i. What is the probability that a random sample of 64 cars will have an average waiting time of less than 3.25 minutes? ii. Did you use the CLT to do this problem? Explain.
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...
A random sample of 64 customers at a drive-through bank window is observed, and it is...
A random sample of 64 customers at a drive-through bank window is observed, and it is found that the teller spends an average of 2.8 minutes with each customer, with a standard deviation of 1.2 minutes. Find a 93% confidence interval for the true mean time that this teller takes with her customers.
The waiting time until a customer is served at a fast food restaurant during lunch hours...
The waiting time until a customer is served at a fast food restaurant during lunch hours has a skewed distribution with a mean of 2.4 minutes and a standard deviation of 0.4 minute. Suppose that a random sample of 44 waiting times will be taken. Compute the probability that the mean waiting time for the sample will be longer than 2.5 minutes. Answer: (Round to 4 decimal places.)
A local hardware store claims that the mean waiting time in line is less than 3.5...
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.3 minutes with a standard deviation of 0.8 minute. If a = 0.05, test the store's claim. Assumption: ? Parameter: ? Hypothesis: ? Test Statistic: ? Reject- Region: ? Calculated Test Statistic: ? Conclusion: ? P-value: ?
d) To test if the mean waiting time at the drive-through window at a fast food...
d) To test if the mean waiting time at the drive-through window at a fast food restaurant during rush hour differs from 10 minutes. Hypothesis to be tested (using symbols): H0 : H1 :
You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting...
You are the manager of a restaurant for a fast-food franchise.
Last month, the mean waiting time at the drive-through window for
branches in your geographical region, as measured from the time a
customer places an order until the time the customer receives the
order, was 3.8 minutes. You select a random sample of 81 orders.
The sample mean waiting time is 3.63 minutes, with a sample
standard deviation of 0.9 minute. Complete parts (a) and (b)
below.
fast-food franchise....
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
Q3. A customer spending waiting time at Alahwal_Jeddah check-in counter is a random variable with mean...
Q3. A customer spending waiting time at Alahwal_Jeddah 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 customers is observed. Find the probability that the average time waiting in line for these customers is: (a) Less than 9.3 minutes (b) Between 5 and 10 minutes (c) Less than 7.5 minutes
The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean 3.2 minutes and a standard deviation a = 1.6 minutes. If a random sample of 64 customers is observed, find the probability that their mean time at the teller's window is A. at most 2.7 minutes; B. more than 3.5 minutes; C. at least 3.2 minutes but less than 3.4 minutes (10 pts. each, 30 pts. total)
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...
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.3 minutes with a standard deviation of 0.8 minute. If a = 0.05, test the store's claim. Assumption: ? Parameter: ? Hypothesis: ? Test Statistic: ? Reject- Region: ? Calculated Test Statistic: ? Conclusion: ? P-value: ?
You are the manager of a restaurant for a fast-food franchise.
Last month, the mean waiting time at the drive-through window for
branches in your geographical region, as measured from the time a
customer places an order until the time the customer receives the
order, was 3.8 minutes. You select a random sample of 81 orders.
The sample mean waiting time is 3.63 minutes, with a sample
standard deviation of 0.9 minute. Complete parts (a) and (b)
below.
fast-food franchise....
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
Q3. A customer spending waiting time at Alahwal_Jeddah 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 customers is observed. Find the probability that the average time waiting in line for these customers is: (a) Less than 9.3 minutes (b) Between 5 and 10 minutes (c) Less than 7.5 minutes
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