In a large lecture class the professor announced that the, Ask an Expert

Statistics

In a large lecture class, the professor announced that the scores on a recent exam were normally distributed with a range from 51 to 87. Using the Empirical Rule ? ± 3? to estimate ?, how many students would you need to sample to estimate the true mean score for the class with 90 percent confidence and an error of ± 2?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9986789

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

42 of the cars in a dealer lot are red 21 are black and 10

42% of the cars in a dealer lot are red, 21% are black and 10% are white. The remainder are some other unspecified color. Salespersons randomly shows three cars to three different customers. What is the probability the f ...

Do you have a credit card or use some other form of

Do you have a credit card or use some other form of consumer credit? Identify what you currently use, if any. If you do not use credit, discuss a type of credit that you might consider in the future. What advantages does ...

Assume the random variable x is normally distributed with a

Assume the random variable x is normally distributed with a mean u=80 and a standard deviation o=4. Find the indicated probability. P(69 P(69 Round to four decimals places as needed.

You are the foreman of the bar-s cattle ranch in colorado a

You are the foreman of the Bar-S cattle ranch in Colorado. A neighboring ranch has calves for sale, and you are going to buy some calves to add to the Bar-S herd. How much should a healthy calf weigh? Let x be the age ...

Explain the similarities and differences between bagging

Explain the similarities and differences between "bagging" and "boosting" in predictive analytics.

In the following five scenarios h0 alpha the obtained

In the following five scenarios, H0, α, the obtained probability (p-value), and the true status of H0 are given. Assume that our test statistic follows a standard normal distribution. Do the following: (a) State whether ...

The torval company made a credit sale of 15000 the invoice

The Torval Company made a credit sale of $15,000. The invoice was sent today with the terms, 3/15 net 60. This customer normally pays at the net date. If your opportunity cost of funds is 9% the expected payment is worth ...

A perpetuity pays 4300 at the end of every month for 11

A perpetuity pays $4300 at the end of every month for 11 months of each year. At the end of the 12th month of each year, it pays double that amount. If the effective ANNUAL rate is 9%, what is the present value of this p ...

Two people agree to meet at a coffee shop they each

Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minu ...

David barnes and his fianceacutee valerie shah are visiting

David Barnes and his fiancée Valerie Shah are visiting Hawaii. There are 38 guests registered for orientation. It is announced that 20 randomly selected registered guests will receive a free lesson of the Tahitian dance. ...

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