Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Read the following scenario and complete each of the problems below: A flashlight company claims that the new bulb in its heavy duty flashlight will

image text in transcribed
Read the following scenario and complete each of the problems below: A flashlight company claims that the new bulb in its heavy duty flashlight will average 246 hours of light. A statistics student decides that he/she wants to test this claim at a 5% level of significance to determine if there is evidence to support the claim. The student randomly selects and tests 15 flashlight bulbs and records how long the bulb lasts until it burns out. Assume the life of a bulb is normally distributed. The data is in the table below: 15 Trial 3 5 10 11 12 13 14 246 224 231 242 237 240 243 236 239 255 256 239 247 231 253 Hrs: 1 . The standard deviation of the POPULATION is 7.4 hours. Construct a 95% confidence interval for this study. 2. Same scenario, but the population's standard deviation is not known. Construct a 95% confidence interval for this study. 3. Write a statement comparing and contrasting the two confidence intervals and results. Read the following scenario and complete each of the problems below: A new car manufacturing company has emerged and has claimed that its new hybrid car, the Pusho, gets a better gas mileage than the highest ranked Toyota Prius. Consumer Reports Magazine decides to test this claim at a 5% level of significance. Consumer Reports randomly selects 10 of each type of car, calculates the miles per gallon for each car in the study, and records the data in the table below. Assume miles per gallon of the cars is normally distributed. Pusho 54.1 52.4 55.7 49.7 50.6 48.9 51.8 54.5 56.9 49.8 Prius 53.2 54.3 49.8 50.1 50.5 56.1 47.8 53.4 56.8 48.7 1 . Construct a 90% confidence interval for the difference in the gas mileage of Pusho and Prius. 2. Construct a 95% confidence interval for the difference in the gas mileage of Pusho and Prius . MTH160: Introduction to Statistics 2 . Write a statement comparing and contrasting the two confidence intervals and the significance of having 0 in both of those intervals

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Technology Ventures From Idea To Enterprise

Authors: Thomas Byers

5th Edition

1260048497, 9781260048490

More Books

Students also viewed these Mathematics questions