Question

The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 3 minutes. Sixty percent of the time, it takes more than how many minutes to find a parking space? (Round your answer to two decimal places.)

Answer #1

Here The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 3 minutes.

so if x is the time taken by a person to find a parking space, then

x ~ NORMAL (5 mins, 3 mins)

so as asked if x is the time above which it takes to find the parking space 60 % of the time, then writing it mathematically.

P(x > x_{0})= 0.6

P(x < x_{0}) = 0.4

so now finding z value

z = NORMSINV(0.4) = -0.25335

so here

z =(x_{0} - 5)/3

x_{0} = 5 - 3 * 0.2535

**x _{0} = 4.24 mins**

Part 1: The length of time it takes to find a parking space at 9
A.M. follows a normal distribution with a mean of 6 minutes and a
standard deviation of 3 minutes.
Find the probability that it takes at least 9 minutes to find a
parking space. (Round your answer to four decimal
places.)
Part 2: The length of time it takes to find a parking space at 9
A.M. follows a normal distribution with a mean of 5...

The length of time it takes to find a parking space at 9 A.M.
follows a normal distribution with a mean of 6 minutes and a
standard deviation of 2 minutes.
Eighty percent of the time, it takes more than how many minutes to
find a parking space? (Round your answer to two decimal
places.)
min

The length of time it takes to find a parking space at 8am
follows a normal distribution with a mean of 10 minutes and a
standard deviation of 3 minutes. Calculate the interquartile
range.

6. The length of time it takes a shopper to
find a parking spot in the Costco parking lot follows a normal
distribution with a mean of 4.5 minutes and a standard deviation of
1.2 minutes.
What is the probability that a randomly selected shopper will
take between 3 and 5 minutes to find a parking spot? Include 4
decimal places in your answer.
7. The amount of gold found by miners in Alaska
per 1,000 tons of dirt follows...

The length of time it takes a college student to find a parking
spot in the student center parking lot follows a non-normal
distribution with a mean of 3.0 minutes and a standard deviation of
1 minute. Find the probability that the mean time to find a parking
spot in the student center parking lot is less than 2.0 minutes for
a randomly selected sample of 100 students

The length of time it takes college students to find a parking
spot in the library parking lot follows a normal distribution with
a mean of 6.5 minutes and a standard deviation of 1 minute.
a. Find the probability that it will take a randomly selected
college student more than 4.0 minutes to find a parking spot in the
library parking lot.
b. Find the probability that a randomly selected college student
will find a parking spot in the library...

The length of time it takes college students to find a parking
spot in the library parking lot follows a normal distribution with
a mean of 7.0 minutes and a standard deviation of 1 minute. Find
the cut-off time which 75.8% of the college students exceed when
trying to find a parking spot in the library parking lot.

Suppose we know that the length of time it takes a college
student to find a parking spot in the library parking lot follows a
normal distribution with a mean of 3.5 minutes and a standard
deviation of 1 minute.
What is the point in the distribution in which 95.44% of the
college students exceed when trying to find a parking spot in the
library parking lot? What about 99.7%? (Explain/show how
you obtain your answer.) What statistical rule about normal...

1. The amount of gold found by miners in Alaska
per 1,000 tons of dirt follows a normal distribution with a mean of
12 ounces and a standard deviation of 2.75 ounces.
What is the probability the miners find less than 8 ounces of
gold in the next 1,000 tons of dirt excavated? Include 4 decimal
places in your answer.
2. The length of time it takes a shopper to
find a parking spot in the Costco parking lot follows...

b) If we know that the length of time it takes a college student
to fingd a parking spot in the library parking lot follows a normal
distribution with a mean of 3.5 minutes and a standard deviation of
1 minute, find the probability that a randomly selected college
student will take between 2 and 4.5 minutes to find a parking spot
in the library parking lot.
c) The mean score of all pro golfers for a particular course has...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 8 minutes ago

asked 11 minutes ago

asked 13 minutes ago

asked 19 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago