Population variance and standard deviation of hours spent

Assignment Help Basic Statistics
Reference no: EM131361592

A random sample of 16 students showed that the variance in the number of hours they spend studying for a final exam was 25 hours2.

a. Construct a 95% confidence interval for the population variance and standard deviation of hours spent studying. Assume the population of hours spent studying is normally distributed.

b. Test, at the 5% level of significance, whether the population standard deviation of hours spent studying is less than 10. Use the critical value approach.

Reference no: EM131361592

Identify appropriate method of data collection

A survey of the residents of a new subdivision on why they happened to select that area in which to live. You also wish to secure some information about what they like and d

Standard deviation using deviation to drive from home

A student has determined it takes an average of 16 minutes to drive from home, park the car, and get to class with a deviation of 4 so if it took the student 25 minutes what

Probability of selecting a sample having a mean exceeding

A sample size of 50 is selected from a normal distribution having a mean of 95 and a standard deviation equal to 15. What is the probability of selecting a sample having a m

Statistical technique in the regression analysis

The statistical technique used in the regression analysis. The sum of squares is a mathematical approach to determining the dispersion of the data points.

What is probability that a real emergency situation exists

A real emergency situation is a rare event, with probability 0.004. Given that the alarm has just sounded, what is the probability that a real emergency situation exists?

Draw the game tree for the outcome of the toss

The outcome of the toss is announced to II. Then II must guess whether I chose the fair or biased coin. If II is correct there is no payoff. If II is incorrect, she loses 1.

Possible pairings for that round

This continues for n rounds, after which a single player remains unbeaten and is declared the winner. Suppose that the contestants are numbered 1 through 2n, and that whenev

Determining a linear-power and exponential model

Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production durin

Reviews

Write a Review

 
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