Question
In: Math
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 150...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 150.9 seconds. Assuming drive-through times are normal distributed with a standard deviation of 25 seconds, complete parts (a) through (d) below.
(a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 116 seconds?
The probability that a randomly selected car will get through the restaurant's drive-through in less than 110 seconds is (Round to four decimal places as needed.)
(b) What is the probability that a randomly selected car will spend more than 188 seconds in the restaurant's drive-through?
The probability that a randomly selected car wil spend more than 188 seconds in the restaurant's drive through is (Round to four decimal places as needed.)
(c) What proportion of cars spend between 2 and 3 minutes in the restaurant's drive-through?
The proportion of cars that spend between 2 and 3 minutes in the restaurant's drive-through is (Round to four decimal places as needed)
Solutions
milcah answered 2 years agoRelated Solutions
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 150.5 seconds. Assuming drive-through times are normally distributed with a standard deviation of 34 seconds, complete parts (a) through (d) below. (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 93 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 93 seconds is (Round to...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was
140.9140.9
seconds. Assuming drive-through times are normally distributed
with a standard deviation of
2424
seconds, complete parts (a) through (d) below.Click here to
view the standard normal distribution table (page 1).
LOADING...
Click here to view the standard normal distribution table (page
2).
LOADING...
(a) What is the probability that a randomly selected car will
get through the restaurant's drive-through in...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was 139.2
seconds. Assuming drive-through times are normally distributed
with a standard deviation of 25 seconds, complete parts (a)
through (d) below.
(a) What is the probability that a randomly selected car will
get through the restaurant's drive-through in less than 96
seconds?
The probability that a randomly selected car will get through
the restaurant's drive-through in less than 96 seconds is?...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was 1.583
seconds. Assuming drive-through times are normally distributed
with a standard deviation of 30 seconds, complete parts (a)
through (d) below.
(a) The probability that a randomly selected car will get
through the restaurant's drive-through in less than 106 seconds
is________
(Round to four decimal places as needed.)
(b)The probability that a randomly selected car will spend more
than 215 seconds...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was 132.9
seconds. Assuming drive-through times are normally distributed
with a standard deviation of 30 seconds, complete parts (a)
through (d) below. (Round to 4 decimal places as needed)
(a) What is the probability that a randomly selected car will
get through the restaurant's drive-through in less than 98
seconds?
(b) What is the probability that a randomly selected car will
spend...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was 154.1
seconds. Assuming drive-through times are normally distributed
with a standard deviation of 28 seconds, complete parts (a)
through (d) below.
a) What is the probability that a randomly selected car will get
through the restaurant's drive-through in less than 115
seconds?
b) What is the probability that a randomly selected car will
spend more than 201 seconds in the restaurant's...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was 158.8
seconds. Assuming drive-through times are normally distributed
with a standard deviation of 30 seconds, complete parts (a)
through (d) below.What is the probability that a randomly selected
car will get through the restaurant's drive-through in less than
114 seconds? The probability that a randomly selected car will get
through the restaurant's drive-through in less than 114 seconds is
nothing. (Round...
A study found that the mean amount of time cars spent in drive-throughs of a certain...
A study found that the mean amount of time cars spent in
drive-throughs of a certain fast-food restaurant was
157.6157.6
seconds. Assuming drive-through times are normally distributed
with a standard deviation of
3434
seconds, complete parts (a) through (d) below.Click here to
view the standard normal distribution table (page 1).
LOADING...
Click here to view the standard normal distribution table (page
2).
LOADING...
(a) What is the probability that a randomly selected car will
get through the restaurant's drive-through in...
The mean waiting time at the drive-through of a fast-food restaurant from the time an order...
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 wait time. He initiates the
new system at his restaurant and measures the wait time for eleven
randomly selected orders. The wait times are provided in the table
below. Based on the given data, is the new system effective? Use...
The mean waiting time at the drive-through of a fast-food restaurant from the time an order...
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 wait time. He initiates the
new system at his restaurant and measures the wait time for ten
randomly selected orders. The wait times are provided in the table
below. Based on the given data, is the new system effective? Use...
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