(Answered) Question the amount of time a bank teller spends with each

Statistics

Question: The amount of time a bank teller spends with each customer has a population mean, μ, of 3.10 minutes and standard deviation, σ, of 0.40 minute. If you select a random sample of 16 customers,

a. what is the probability that the mean time spent per customer is at least 3 minutes?

b. there is an 85% chance that the sample mean is less than how many minutes?

c. What assumption must you make in order to solve (a) and (b)?

d. If you select a random sample of 64 customers, there is an 85% chance that the sample mean is less than how many minutes?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92497955
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

A normal distribution has a mean equal tonbsp45 what is the

A normal distribution has a mean equal to 45. What is the standard deviation of this normal distribution if 2.5% of the proportion under the curve lies to the right of x = 52.84? (Round your answer to two decimal plac ...

Calculate cash inflow or outflow from operating activities

Calculate cash inflow or outflow from operating activities given the following information: Net loss - $12,000; depreciation expense $3,000; increase in AR $1,250; decrease in inventory $900; increase in AP $760.

Assume that the critic finds that 50 percent of the movies

Assume that the critic finds that 50 percent of the movies have positive comments about the plot, 50 percent have positive comments about the acting, and 30 percent were not given positive comments about either plot or a ...

Researchers at the university of pennsylvania school of

Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with the lights on have a 35% chance of becoming myopic before they are 16. Children who sleep in ...

Jen and barry get sued by ben amp jerrys for trademark

Jen and Barry get sued by "Ben & Jerry's" for trademark infringement. Jen and Barry lose, and they need a LOT of money. They decide to play Tennetucky's "Mega-6" lottery. They'll win the jackpot if they correctly choose ...

If you know your raw score is 35 your z score is -3 and

If you know your raw score is 35, your z score is -3, and your t score is 20. The mean is 50 and the standard deviation is 5. How would you use this information to solve for a percentile rank?

Waterton lakes national park in alberta has 6 trails that

Waterton Lakes National Park in Alberta has 6 trails that reach the icefields. If a hiker wishes to reach the icefields in 3 different ways during a visit, how many different possibilities would there be?

An urn contains 5 red and 10 blue balls balls are drawn

An urn contains 5 red and 10 blue balls. Balls are drawn sequentially from urn without replacement. Let X be the number of draws necessary in order to obtain exactly 4 red balls. Find probability mass function of X

What is the sample size for studies with moe of -35 and -28

What is the sample size for studies with MOE of +/-3.5% and +/-2.8%, with a confidence level of 95%, sample statistics of 50. Suppose the category population was 7500 (less than 10,000)? Remember the FPC. What would be t ...

You can invest money each month at 6 percent interest

You can invest money each month at 6 percent interest compounded monthly over the next 30 years. In 30 years, you will take all the money you invested and put it into an account earning 8 percent compounded monthly. Then ...

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