Productivity enhancers who are comfortable with technology

Assignment Help Basic Statistics
Reference no: EM13100028

In an online survey of 4001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the internet for its practical value. Suppose you select a sample of 400 students at your school, and the population proportion of productivity enhances is .08.

a. What is the probability that in the sample, fewer than 10% of the students will be productivity enhancers?

b. What is the probability that in the sample, between 6% and 10% of the students will be productivity enhancers?

c. What is the probability that in the sample, more than 5% of the students will be productivity enhancers?

d. If a sample of 100 is taken, how does this change your answers to (a) through (c)?

Please use excel to answer problems.

Reference no: EM13100028

Questions Cloud

Discuss factors that influence choice of evaluation design : What factors influence the choice of evaluation design? Which of these factors would have the greatest influence on your choice of an evaluation design?
Determining binomial and empirical probability : A baseball player hits 59 home runs during a season with 161 games. What is the empirical probability that the player would hit at least one home run during any given game of the season?
Probability questions for stats students : Two marbles are selected, one at a time from a jar of marbles containing 10 black, 10 brown, 10 white and 10 green marbles. Let x represent the number of white marbles selected in 2 separate selections from the jar.
Balance of business needs vs the it challenges : Imagine an interview with a company CIO or MIS Director/Manager, perhaps even in your own company. Construct a short list of questions that you would ask.
Productivity enhancers who are comfortable with technology : In an online survey of 4001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the internet for its practical value. Suppose you select a sample of 400 students at your school, and the population ..
Determining chance and probability : As reported by Runner's World magazine, the times of the finishers in the New York City 10-km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x be the finishing time for a finisher in the New York ..
Marketing survey-probability : A marketing survey is taken among fast food customers to determine their preference for hot dogs or pizza. Of the 200 respondents selected,
Mean time spent on paperwork by all managers : Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
What most common primary malignant tumor of bones is called : The most common primary malignant tumor of bones is called.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Simultaneous responses to two categorical questions

When studying the simultaneous responses to two categorical questions, we should set up a:

  Probability that he gets a hit in next bat

A baseball player gets a hit in 30 out of 100 times at bat. What is the probability that he gets a hit in his next at bat?

  Comparing sample means

Why are you no longer directly comparing sample means? How does using the F test - the analysis of variance (ANOVA) reduce your Type I error rate? What is the difference between a within-groups and a between-groups variance?

  Mean-standard deviation of company total cost for shipping

It costs ABC $0.5 per pound to ship the box containing the weights. Because it's an odd-shaped package, though, shipping the bar costs $0.6 per pound plus a $10 surcharge. Find the mean and standard deviation of the company's total cost for shippi..

  Standard deviation of the distribution of the sample mean

Find a 99% confidence interval for the mean pH in rainfall and interpret the interval and what assumption must be made for the confidence interval to be valid?

  Difference between the r and r-squared terms

What is the difference between the R and R-squared terms? What does each tell you? How large should the R-squared term be if you want to show that the two variables are practically related?

  Correctness of the prediction

At α = 0.05, is the correctness of the prediction different for the two types of cola drinkers?

  Confidence interval estimate for population proportion

Results from survey of 1000 respondents, point out that 545 favour the dealth penalty for capital crimes. By using a90% confidence level. Create confidence interval estimate for population proportion.

  Determining critical value using one-tailed t-test

Assume a one-tailed t -test is being applied to determine if population mean is less than $212.  Level of significance chosen is 0.01 and 26 accounts are sampled. Determine the critical value?

  Histogram of time spent eating and drinking

A histogram of time spent eating & drinking each day is skewed right. Use this result to explain why a large sample size is needed to construct a confidence interval for the mean time spent eating & drinking each day.

  Average stock price for a company

The average stock price for companies making up the S&P 500 is $40, and the standard deviation is $10. Assume the stock prices are normally distributed. What is the probability a company will have a stock price less than $33.

  Mean and standard deviation of final grades

The final grades for a random sample of MKT 380 students are as follows: What is the standard deviation for these data?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd