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.
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1. At
a fast food restaurant, the waiting time at the drive-through
window has an average of...
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 3.7 minutes. You select a random sample of 64 orders. The sample mean waiting time is 3.57 minutes, with a sample standard deviation of 0.8 minute. A) At a 95% confidence level, is...
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....
27) A fast food restaurant wants to know about how long, on average, a customer spends...
27) A fast food restaurant wants to know about how long, on average, a customer spends waiting in a drive-thru from the time their order ends to the time that they get their food. To investigate this, the restaurant takes a random sample of 36 cars and finds that it takes an average of 2.4 minutes. Suppose the restaurant knows that drive-thru times have a population standard deviation of 7 minutes. Calculate a 95% Confidence Interval for drive-thru times: (5...
6. The mean waiting time at the drive-through of a fast-food restaurant from the time an...
6. The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 84.3 seconds. A manager devises a new drive-through system that he believes will decrease the wait time. He initiates the new system at his restaurant and measures the wait time for 10 randomly selected orders. The wait times are in the following table: 108.5 67.4 58.0 75.9 65.1 80.4 95.5 86.3 70.9 72.0...
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 3.6 minutes. You select a random sample of 64 orders. The sample mean waiting time is 3.82 minutes, with a sample standard deviation of0.8 minute. Complete parts (a) and (b) below. a. At the...
The mean waiting time at the drive-through of a fast-food restaurant from the time the food...
The mean waiting time at the drive-through of a fast-food restaurant from the time the food is ordered to when it is received is 85 seconds. A manager devises a new system that he believes will decrease the wait time. He implements the new system and measures the wait time for 10 randomly sampled orders. They are provided below: 109 67 58 76 65 80 96 86 71 72 Assume the population is normally distributed. (a) Calculate the mean and...
10. (16 pts) The mean waiting time at the drive-through of a fast-food restaurant was 84.3...
10. (16 pts) The mean waiting time at the drive-through of a fast-food restaurant was 84.3 seconds last year. The manager wants to know whether the mean waiting time is reduced. She randomly selects a sample of customers and their waiting times are as follows: 108.5 67.4 58.0 75.9 65.1 80.4 95.5 86.3 70.9 72.0 What is the population? What is the sample? At the α = 0.05 level of significance, determine whether there is evidence that the...
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.)
please help. thank u The mean waiting time at the drive-through of a fast food restaurant...
please help. thank u
The mean waiting time at the drive-through of a fast food restaurant from the time an orders placed to the time the order is received is 84 2 seconds. A manager devises a new drive through system that the believes will decrease wait time As a test the initiates the new system at her restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right...
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....
27) A fast food restaurant wants to know about how long, on average, a customer spends waiting in a drive-thru from the time their order ends to the time that they get their food. To investigate this, the restaurant takes a random sample of 36 cars and finds that it takes an average of 2.4 minutes. Suppose the restaurant knows that drive-thru times have a population standard deviation of 7 minutes. Calculate a 95% Confidence Interval for drive-thru times: (5...
6. The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 84.3 seconds. A manager devises a new drive-through system that he believes will decrease the wait time. He initiates the new system at his restaurant and measures the wait time for 10 randomly selected orders. The wait times are in the following table: 108.5 67.4 58.0 75.9 65.1 80.4 95.5 86.3 70.9 72.0...
The mean waiting time at the drive-through of a fast-food restaurant from the time the food is ordered to when it is received is 85 seconds. A manager devises a new system that he believes will decrease the wait time. He implements the new system and measures the wait time for 10 randomly sampled orders. They are provided below: 109 67 58 76 65 80 96 86 71 72 Assume the population is normally distributed. (a) Calculate the mean and...
please help. thank u
The mean waiting time at the drive-through of a fast food restaurant from the time an orders placed to the time the order is received is 84 2 seconds. A manager devises a new drive through system that the believes will decrease wait time As a test the initiates the new system at her restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right...
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