Ceate 95 confidence interval for average price of tires

Assignment Help Mathematics
Reference no: EM13474085

A consumer is considering purchasing a set of tires. She samples 30 companies and finds the average price of a set of tires is $245 with a standard deviation of $38. Construct a 95% confidence interval for the average price of the tires. How would this information help her in purchasing the tires? If she samples 50 companies, how and why does the interval change?

Reference no: EM13474085

Questions Cloud

How many ounces of a 13 alcohol solution and a 28 alcohol : how many ounces of a 13 alcohol solution and a 28 alcohol solution must be combined to obtain 45 ounces of a 21
How does the teams personal attitude and feelings regarding : how does the teams personal attitude and feelings regarding the professional change influence change. describe the
What did the new deal mean for african americans was it a : you need to answer all these questions please read below on the guidelines and must answer all the short essay
What is the correlation between student anxiety scores and : a study wants to examine the relationship between student anxiety for an exam and the number of hours studied. the data
Ceate 95 confidence interval for average price of tires : a consumer is considering purchasing a set of tires. she samples 30 companies and finds the average price of a set of
Descriptive statistics any descriptive statistics relevant : part afor part a you will choose a topic for your project. you will need to determine the number of mean for your
Solve the equation for x state any restrictions on the : solve the equation for x. state any restrictions on the variables.
Include such things as though not limited to what is the : examine the similarities amp differences of the k-12 education system in the us to that of another country. provide
Random sample of 36 cats found average weight to be 98 : a random sample of 36 cats found the average weight to be 9.8 pounds with a standard deviation of 2.4 pounds.a.

Reviews

Write a Review

Mathematics Questions & Answers

  What is the numerical value of the height as perdicted

a plot the data points with the best-fit line is given below. what is the numerical value of the height as perdicted by the best-fit line of an age of 20 weeks.

  Check local and global maxima and minima

Evaluate critical points, end points, local extrema and global extrema - Evaluate f at its critical points and at the endpoints of the given interval. Identify local and global maxima and minima of f in the interval.

  How many different committees are possible

From a group of 8 women and 6 men, a committee consisting of 4 men and 3 women is to be formed. how many different committees are possible?

  The financial analysis department at mortex estimates that

the mortex company assembles garments entirely by hand even though a textile machine exists that can assemble garments

  What is the probability that sales will be less

Susan has reason to believe that the distribution of No-Stick follows a normal curve, with a standard deviation of 4,000 packages. What is the probability that sales will be less than 81,000 packages?

  How many students would be needed to make sure a 95

an investigator want to estimate chocolate consumption eat chocolate or do not in kidergarten students.nbsp how many

  What is the approximate outside area of the bowl

A ceramic bowl is turned on a potter's wheel to approximate the surface obtained by revolving the curve y= (2/3)((x^2) - 1 ) from x=1 to x=2 about the y axis. What is the approximate outside area of the bowl? [assume that each unit on the x and y ..

  What is the probability that the mean annual precipitation

The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 107 inches, and a standard deviation of 10 inches. What is the probability that the mean annual precipitation during 25 randomly picked years will..

  Discuss in general without a mathematical example

How can equations and inequalities help a business maximize profit or minimize costs?

  Script an initial vertical velocity of feet per second

with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet above the ground. How long will it take the object to hit the ground?

  What is the total time the roast should be in the oven

A roast is taken from the refrigerator, where the temperature is 40? F, and put in a 350? F oven. One hour later the meat thermometer shows a temperature of 90?F. If the roast is done when its temperature reaches 140?F, what is the total time the ..

  Conversion of angle measures from degrees to radians

Conversion of angle measures from degrees to radians - Fill in the missing blanks by using the conversions between radians and degrees to find your solutions

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