Suppose that the distribution of keyboarding speeds for, Ask an Expert

Statistics

Suppose that the distribution of keyboarding speeds for students who have completed a two- week keyboarding course is approximately normal with a mean of 82 words per minute (wpm) and standard deviation of 9 wpm. In the questions below, assume that a student has been randomly selected from the population of students who have completed the keyboarding course.

(a) What is the probability that a randomly selected student's keyboarding rate is at most 100 words per minute?

(b) What is the probability that a randomly selected student's rate is between 70 and 90 wpm?

(c) Suppose that additional training will be made available to the slowest 20% of students who completed the keyboarding class. What keyboarding speeds would qualify for the training?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9999884

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A fifteen percent of the us population is greater than 65

A. Fifteen percent of the U.S. population is greater than 65 years of age. If a sample of 100 persons is chosen, what is the probability that fewer than 10 are more than 65 years old? B. In a sample of size 100 from the ...

Suppose that 1 of the employees of a certain company use

Suppose that 1% of the employees of a certain company use illegal drugs. This company performs random drug tests that return positive results 99% of the time if the person is a drug use. However, it also has a 2% false p ...

A box contains n white and m black balls one ball is added

A box contains n white and m black balls. One ball is added randomly, white with probability p and black with probability 1 - p. Then a random ball is taken out from the box. (a) Find the probability that the taken ball ...

It has been a bad day for the stock market and you have

It has been a bad day for the stock market and you have heard that only 30% of all stocks gained value. Suppose you have a portfolio of 10 securities and assume a binomial distribution for the number of your stocks that ...

State whether each of the following will increase decrease

State whether each of the following will increase, decrease, or have no effect on the population variance. (a) the sum of squares ( SS ) increases This change will increase the population variance. This change will decre ...

The mean height of women in a country ages 20-29

The mean height of women in a country? (ages 20-?29) is 63.5 inches. A random sample of 65 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 ?inches? Assu ...

According to recent study 143 of 453 technology ceos from

According to recent? study, 143 of 453 technology CEOs from around the world responded that technological advances will transform their business and 85responded that resource scarcity and climate change will transform th ...

Describe the general concept of economic analysis is this

Describe the general concept of economic analysis. Is this type of analysis necessary, and can it really help the individual investor make a decision about stock? Explain

1 suppose we want to see if american children have higher

1) Suppose we want to see if American children have higher levels of cholesterol than the average child (i.e., in the entire world - the total population). We find that the population average for cholesterol for children ...

A standard 52-card deck of cards is shuffled and then a

A standard? 52-card deck of cards is shuffled and then a hand of 8 cards is dealt from the deck. How many different outcomes are possible that have exactly 3 ?pairs, and all other cards of different? ranks?

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