(Answered) Please answer must be received within an hour to this

Statistics

Please, answer must be received within an hour to this question:

The average waiting time for customers at a fast food restaurant is 3.4 minutes. The population standard deviation is 2.5 minutes.

Assume that the waiting time of customers at this restaurant follow a normal distribution, what is the probability that a simple random sample of 50 customers will have a sample waiting time of less than 3 minutes?
Do we need to make any assumption about the distribution of waiting times for the calculation in Part a? Why or why not?
What is the probability that a simple random sample of 100 customers will have a sample waiting time of less than 3 minutes?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92766762
Price:- $15

Verified Expert

Priced at $30 Now at $15, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

You have just leased a car that has monthly payments of 365

You have just leased a car that has monthly payments of $365 for the next 4 years with the first payment due today. If the APR is 6.84 percent compounded monthly, what is the value of the payments today?

An appliance dealer calculated the proportion of new

An appliance dealer calculated the proportion of new dishwashers sold that required various numbers of service calls to correct problems during the warranty period. The records were: No. of service calls Relative frequ ...

Suppose a firm uses sales teams to market their products

Suppose a firm uses sales teams to market their products. For example, a construction equipment manufacturer may assign three sales agents to a team so each team member can specialize in particular product functions (e.g ...

The board of a major credit card company requires that the

The board of a major credit card company requires that the mean wait time for customers when they call customer service is at most 3.00 minutes. To make sure that the mean wait is not exceeding the requirement, an assist ...

If the data are pooled the 48 before scores had an average

If the data are pooled, the 48 "before" scores had an average of 7.48 and a standard deviation of 0.652. Assume that the "before" scores of people who have not seen any pictures has an average of 7.48 and a standard devi ...

Sixty-seven percent of adults have looked at their credit

Sixty-seven percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 20 of them have looked at their score in the past six months?

The length of time needed to complete certain test is

The length of time needed to complete certain test is normally distributed with mean 74 minutes and standard deviation 17 minutes. Find the probability that it will take more than 70 minutes to complete the test. 0.7035 ...

Anbspbbb-rated corporate bond has a yield to maturity of

A? BBB-rated corporate bond has a yield to maturity of 11.2%. A U.S. treasury security has a yield to maturity of 9.9%. These yields are quoted as APRs with semiannual compounding. Both bonds pay? semi-annual coupons at ...

Assume in a particular year aprojecthas the following

Assume in a particular year aprojecthas the following financials: NOI o $700,000; Annual Bedt Service o $430,000 (of which $400k is intrest and 30k is priciple); original loan debt of 6.2M: 39 yr depreciable life: $8M no ...

In a fish tank there are 23 goldfish 4 angelfish and 9

In a fish tank, there are 23 goldfish, 4 angelfish, and 9 guppies. If a fish is selected at random, find the probability that it is an angelfish or a guppy.?

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert