Question

A confidence interval is desired for the true average stray load loss µ, measured in watts...

A confidence interval is desired for the true average stray load loss µ, measured in watts for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume the stray load loss is normally distributed with σ = 3.0.

(a) Compute a 95% confidence interval when x¯ = 58.3 and n = 25

(b) Repeat (a) but now assume n = 100. Compare the two intervals and comment on the effect of sample size.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A CI is desired for the true average stray-load loss ? (watts) for a certain type...
A CI is desired for the true average stray-load loss ? (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with ? = 2.9. (Round your answers to two decimal places.) (a) Compute a 95% CI for ? when n = 25 and x = 57.2. , watts (b) Compute a 95% CI for ? when n = 100...
A CI is desired for the true average stray-load loss μ (watts) for a certain type...
A CI is desired for the true average stray-load loss μ (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with σ = 3.3. (Round your answers to two decimal places.) (a) Compute a 95% CI for μ when n = 25 and x = 56.0. . watts (b) Compute a 95% CI for μ when n = 100...
Answers to the following questions should be calculated in Matlab and given to 4 decimal places....
Answers to the following questions should be calculated in Matlab and given to 4 decimal places. Be careful not to introduce errors by rounding in any intermediate calculations as this may lead to an incorrect final answer. A confidence interval is desired for the true average load loss μ (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. A random sample of 48 motors were tested...
Answers to the following questions should be calculated in Matlab and given to 4 decimal places....
Answers to the following questions should be calculated in Matlab and given to 4 decimal places. Be careful not to introduce errors by rounding in any intermediate calculations as this may lead to an incorrect final answer. A confidence interval is desired for the true average load loss μ (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. A random sample of 52 motors were tested...
True or false? A larger sample size produces a longer confidence interval for μ. False. As...
True or false? A larger sample size produces a longer confidence interval for μ. False. As the sample size increases, the maximal error decreases, resulting in a shorter confidence interval.True. As the sample size increases, the maximal error decreases, resulting in a longer confidence interval.    True. As the sample size increases, the maximal error increases, resulting in a longer confidence interval.False. As the sample size increases, the maximal error increases, resulting in a shorter confidence interval. True or false? If the...
Problem #1 Confidence Interval for Means using the t and z Distribution.    Psychologists studied the percent...
Problem #1 Confidence Interval for Means using the t and z Distribution.    Psychologists studied the percent tip at a restaurant when a message indicating that the next day’s weather would be nice was written on the bill. Here are tips from a random sample of patrons who received such a bill, measured in percent of the total bill: 20.8     18.7     19.9     20.6     21.9     23.4     22.8     24.9     22.2     20.3   24.9     22.3     27.0     20.4     22.2     24.0     21.1     22.1     22.0     22.7 Open an...
Answer the question. CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS 1. As degrees of freedom increase, the...
Answer the question. CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS 1. As degrees of freedom increase, the t-distribution approaches the: A. binomial distribution B. exponential distribution C. standard normal distribution D. None of the above 2. Given a t-distribution with 14 degrees of freedom, the area left of - 1.761 is A. 0.025 B. 0.05 C. 0.10 D. 0.90 E. None of the above 3. 100 samples of size fifty were taken from a population with population mean 72. The sample...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT