Confidence interval and sample size computation using t test

Reference no: EM13107049

A random sample of 10 Tootsie Rolls was taken from a bag. Each piece was weighed with the result being 3.087, 3.131, 3.241, 3.270, 3.353, 3.400, 3.411, 3.437, 3.477. Construct a 90% confidence interval for the true mean weight. What sample size would be necessary to estimate the true weight with an error of plus or minus .03 grams with a 90% confidence?

Reference no: EM13107049

Questions Cloud

Determine the maximum height the rock reaches above point : One side of the roof of a building slopes up at 37.0°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child.

Independent sample t test-sales consistency : AU Cellular believes their sales are more consistent than their rival Softbank Cellular. Below is the number lost calls a day over the last seven days. Do you agree with AU? Use the .01 significance level.

Explain why the functional areas of both international : Explain how and Explain why the functional areas of both international business and administration are important to the four phases of strategic management discussed in module one (thinking, planning, implementation and feedback) (Minimum of 500 w..

Determine the optimum batch production quantity : A job shop receives an order for high precision formed parts. The cost of producing each part is approximately $20,000. The customer requires that either 4 or 5 good parts be supplied.

Confidence interval and sample size computation using t test : Construct a 90% confidence interval for the true mean weight. What sample size would be necessary to estimate the true weight with an error of plus or minus .03 grams with a 90% confidence?

Determine production lot size to maximize expected profit : A foundry receives an order for specialty castings. Cost of producing each casting is estimated to be $15,000. The customer requires that exactly 4 good castings be supplied.

What is your speed at the end of this time : You are driving a car with a speed of 25 m/s. You slam on your brakes for 1.50 seconds causing your car to decelerate at a constant rate of 4.50 m/s^2. What is your speed at the end of this time?

Explain environmental benefits and challenge of urbanization : In your own words, include descriptions of two 2008 award winners, discussing how they overcome one of challenges mentioned in your presentation.

Which of the following statements are true : Consider three resistors with unequal resistances connected in series to a battery. Which of the following statements are true? 1. The current flowing through each of the resistors is the same and is equal to the current supplied by the battery.

User Account

All Pages