Confidence interval for automobiles traveling on interstate

Assignment Help Basic Statistics
Reference no: EM13129889

A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph. The 96.6% confidence interval for m is?

Reference no: EM13129889

Questions Cloud

Financial management-annual inflation rates : Suppose the current exchange rate for the Polish zloty is Z 2.85. The expected exchange rate in three years is Z 2.93. What is the difference in the annual inflation rates for the United States and Poland over this period?
Net cash flow from operating activities : Net cash flow from operating activities may be reported indirectly by removing the effects of certain items from net income. Which of the following requires an adjustment for this purpose?
Describe capital investements and sharing the remainder : The firm earned 423,300. The partners to share income by providing annual salary allowances of 39,000 to kim. 34,000 to tere. and 46,000 to josh. Granting 10 percent interest on the partners beginning capital investements and sharing the remainder..
Analyze the impact of erroneous classifications : Analyze the impact of erroneous classifications in the operating activities section of the cash flow statement on free cash flow and how this distortion can impact the decisions made by financial statement users.
Confidence interval for automobiles traveling on interstate : From past information, it is known that the standard deviation of the population is 22 mph. The 96.6% confidence interval for m is?
Computing monthly finance charge for credit card : Calculate the monthly finance charge for the credit card transaction. Assume that it takes 10 days for a payment to be received and recorded, and that the month is 30 days long.
Evaluate the logic of reflecting key person life insurance : evaluate the logic of reflecting key person life insurance in the operating activities of the cash flow statement and determine if this presentation is misleading to users of the financial statements.
What effect would purchase of the new machine : Mueller can buy a newer production machine that will increase fixed costs by $8,000 per year, but will decrease variable costs by $0.40 per unit. What effect would purchase of the new machine have on Mueller's break-even point in units?
Net cash used in financing activities : In Xan's Year 2 statement of cash flows, net cash used in financing activities should be:

Reviews

Write a Review

Basic Statistics Questions & Answers

  Interpret confidence interval and write sentence to explain

Find a 95% confidence interval for the true proportion of patients who experienced cotton mouth. Show your calculations and/or explain the process used to obtain the interval.

  Find the required probability for the normal distribution

What is the proportion of people surveyed that rated the subway system from 3 to 4. What is the proportion of people surveyed rated the Subway System from 1 to 3.

  Determine measures of central tendency and dispersion

What measure of central tendency is most sensitive to skewness and which is least sensitive? What are measures of central tendency used for? What are measures of dispersion used for?

  Description of margin of error

A national Retail Foundation survey found housholds intended to spend an average of $932 during the December holiday season. Assume that the survey included 850 households and that the standard deviation of the sample is $215.

  Graphical method-multiple optimal solutions

In the graphical method, how do you know when a problem is infeasible, unbounded, or when it has multiple optimal solutions? Give a real-world example of when you could have an infeasible problem.

  Reducing the maximum error of estimation

A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..

  Housing-economic-social status

The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status. What is the Population.

  What chance that sample families will not own car

A simple random sample of 1600 families is chosen. What is the chance that between 9% and 11% of the sample families will not own car?

  Binomial probability-arrival of northwest airlines

Assume the likelihood that any flight on Northwest Airlines arrives within 15 minutes of the scheduled time is .90. We select four flights from yesterday for study.

  Test whether there is more variation using variance test

At the .01 significance level, can we conclude that there is more variation?

  Mean and standard deviation for the observations

Use your calculator to find the mean and standard deviation for the 9 observations that remain when you leave out the outlier. How does the outlier affect the values of x and s? Is s a resistant measure of spread?

  Statistics-probability-random sample

The mean weight of newborn babies in a Long Island Community is 7.5 lbs with a standard deviation of 1.4 lbs. What is the probability that a random sample of 49 babies has a sample mean weight of at least 7.2lbs?

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