Solution-Mean test scores for a college

Mean test scores for a college

Assignment Help Basic Statistics

Reference no: EM131332621

1) Suppose the mean test scores for a college enter exam is normally distributed with mean = 78 and standard deviation = 12.

a). If an individual student is selected at random, what is the probability that this student's score is over 80?

b). A classroom of 16 of these students is used as a sample. What is the probability that the class mean is greater than 80?

2) A telemarketer makes a sale on 25% of his calls. If he makes 300 calls in a night, what is the probability that he will make more than 70 sales but less than 90 sales?

3) If 2% of the calls received by BMCC switchboard are wrong numbers. Find the probability that among 210 calls received by BMCC switchboard, 4 will be wrong numbers.

a). Determine in this case whether the conditions for the Poisson approximation to the Binomial distribution are satisfied.

b). If so, please use the Poisson approximation to the binomial distribution to find the probability.

Reference no: EM131332621

Questions Cloud

Conditions for the poisson approximation : a). Determine in this case whether the conditions for the Poisson approximation to the Binomial distribution are satisfied. b). If so, please use the Poisson approximation to the binomial distribution to find the probability.

What price will maximize revenue : Applied Microeconomics - Explain the similarity and the difference between the Soviet model and China's planned economy model - What price will maximize revenue?

Mean test scores for a college enter exam : Suppose the mean test scores for a college enter exam is normally distributed with mean = 78 and standard deviation = 12. a). If an individual student is selected at random, what is the probability that this student's score is over 80?

Discuss the form of program evaluation for an organization : Many international non-governmental organizations do not use any form of program evaluation. This is alarming because program evaluations are an important process for non-governmental organizations and are an effective management practice.

Mean test scores for a college : 1) Suppose the mean test scores for a college enter exam is normally distributed with mean = 78 and standard deviation = 12. a). If an individual student is selected at random, what is the probability that this student's score is over 80?

How each state differs from the other : Using two states of the world describe the following situation, specifying how each state differs from the other: "Roger ascribes probability 0.4 to the Philadelphia Phillies winning the World Series."

Hours and a standard deviation : A buyer suspects that the factory's claimed life of mean is 3000 hours for these light balls are too high. To check the claim, the factory tests 50 of these light balls and gets a mean lifetime of sample mean = 2988 hours and a standard deviation ..

Give a mean mileage of greater : A car salesmen claims that a particular make of a car would give a mean mileage of greater than 20mpg. If I ran 10 cars on one gallon of gas each and came up with 10 different results, what statistical formula would I use to support the salesmen c..

Professor han method : a). Is this evidence at 1% level that Professor Han's method produces less than 25% grades less than a C? b). What is the p-value for your test?

User Account

All Pages

Mean test scores for a college

Reference no: EM131332621

Reference no: EM131332621

Questions Cloud

Reviews

Write a Review

Basic Statistics Questions & Answers

Statistics-probability assignment

What is the least number

Determine the value of k

What is the probability

Binomial distributions

Caselet on mcdonald’s vs. burger king - waiting time

Generate descriptive statistics

Sampling variability and standard error

Estimate the population mean

Conduct a marketing experiment

Find out the probability

Linear programming models

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT