Question

2) A student makes a number of measurements of electrical current in the circuit. The average of the measurements is 12.33 mA. The standard deviation of the sample is 0.14 mA. How should this measurement be written to the correct number of significant figures with error range to show a 95% confidence?

0 0
Add a comment Improve this question Transcribed image text
Answer #1

The solution is provided with the given information. Though the exact numerical value is not calculated due to lack of a number.

The interval is given.pPose n be th measusements dore e nomber o F 1-16 So, Toter Va) is, - 12.33 t 196x 0-1y sn

Add a comment
Know the answer?
Add Answer to:
2) A student makes a number of measurements of electrical current in the circuit. The average...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 1. A student makes several measurements of the density of an unknown mineral sample. She then...

    1. A student makes several measurements of the density of an unknown mineral sample. She then reports the average value of these measurements. The number of significant figures she uses in her result should be a measure of its A) accuracy. B precision C) systematic error. D) determinate error. E) human error. The temperature of a gas sample isproperty. 2. A) intensive B) extensive 3. Which one of the following is a "substance" in the chemical sense as used in...

  • Need the answer with standard deviation and error range to show a 95% confidence?? average value...

    Need the answer with standard deviation and error range to show a 95% confidence?? average value for the sample. Express the For the following sets of measurements, determine the answer in the fomx 2ơ to the correct number of significant figures and units. ni n2 ns na ns ne Average 12.22 V 16.33 V 11.02 V 13.28 V 14.19 V 12.87 V 124.5 m/s 124.9 m/s 125.1 m/s 124.0 m/s 125.2 m/s 123.9 m/s 1322 mm 1326 mm 1329 mm...

  • State the number in scientific notation and write the number of significant figures in each of...

    State the number in scientific notation and write the number of significant figures in each of the following numbers. Explain your answer. 1. a. 37.60 b. 0.0130 c. 13000 d. 1.2300 Perform the indicated operations to the correct number of significant figures using the rules for significant figures 2. a. 37.60 x 1.23 b. 6.7/8.975- c. 3.765+1.2+37.21 To get credit, specify the rule you used to round your results 3. Three students make measurements (in m) of the length of...

  • 2. Perform the indicated operations to the correct number of significant figures using the figures rules...

    2. Perform the indicated operations to the correct number of significant figures using the figures rules for a. 37.60 x 1.23 b. 6.7/8.9752 c. 3.765+1.2+37.21 To get credit, specify the rule you used to round your results. Three students make measurements (in m) of the length of a rod using a meter stick. Each student's mode calculate the mean L, standard deviation S and uncertainty u of the measurements. 3. are tabulated in the table below. Using your calculator in...

  • In order to estimate the average time spent on the computer terminals per student at a...

    In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.2 hours. If the sample mean is 9 hours, then the 95% confidence interval is approximately a. The 95% interval because it is a less accurate interval. The 95% interval because it is a less accurate interval. b. The 99% interval because...

  • A researcher is interested in determining the average number of years employees of a company stay with the company.

    A researcher is interested in determining the average number of years employees of a company stay with the company. If past information shows a standard deviation of 7 months, what size sample should be selected so that at 95% confidence the margin of error will be 2 months or less?

  • 1. A random sample of 37 employees in Sweden worked an average number of 231 days...

    1. A random sample of 37 employees in Sweden worked an average number of 231 days per year. The sample standard deviation is 26 days. a) Develop a 95% confidence interval for the average number of work-days per year for all Swedish employees. (6 marks) b) Verbally interpret the meaning of the confidence interval that you found for part a) c) If the desired margin of error for the above confidence interval is 4 days, what size sample is necessary?...

  • 9.2 An electrical firm manufactures light bulbs that have a length of life that is approximately...

    9.2 An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with a standard deviation of 40 hours. If a sample of 30 bulbs has an average life of 780 hours, find a 96% confidence interval for the population mean of all bulbs produced by this firm. Many cardiac patients wear an implanted pace- maker to control their heartbeat. A plastic connec- tor module mounts on the top of the pacemaker. As- suming...

  • You are to estimate the average number of hours that students who are planning to enroll...

    You are to estimate the average number of hours that students who are planning to enroll at a college in the fall semester will be taking. You don’t know the standard deviation (or variance), but from previous semesters you have an idea about the range. Historically, the lowest number of hours taken is 1 (usually a PE course). At the other end of the spectrum, the most hours a student has ever been enrolled for is 24. Using industry convention,...

  • 4. A student calibrates a 25-mL pipette by measuring the volume of the water it can...

    4. A student calibrates a 25-mL pipette by measuring the volume of the water it can transfer. The reading data are shown as follows (unit in mL): 24.75, 24.83, 24.87, 24.91, and 25.32 (a) Is there an outlier at the 95% confidence level? (b) Calculate the coefficient of variation based on the results from part (a). (c) Suppose the standard deviation of the liquid volume is 0.04 mL, how many replicate measurements would the student need to get 95% confidence...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT