Question: Dave the jogger runs the same route every day (about 2.2 miles). On 18 consecutive days, he recorded the number of steps using a pedometer.

Dave the jogger runs the same route every day (about 2.2 miles). On 18 consecutive days, he recorded the number of steps using a pedometer. The results were

(a) Construct a 95 percent confidence interval for the true mean number of steps Dave takes on his run.
(b) What sample size would be needed to obtain an error of ±20 steps with 95 percent confidence?
(c) Using Excel, plot a line chart of the data. What do the data suggest about DaveSteps the pattern over time?

3,450 3363 3228 3,3 3,304 3407 3,324 3,365 3,290 3,289 3346 3252 3,237 3,210 3,140 3,220 3,10 3,129

Step by Step Solution

★★★★★

3.35 Rating (164 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Using Megastat CONFIDENCE INTERVALS SAMPLE SIZE CONFIDENCE INTERVAL M... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

485-M-S-S-D (1659).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

What sample size would be needed to estimate the true proportion of American households that own more than one DVD player, with 90 percent confidence and an error of 0.02?

What sample size would be needed to estimate the true proportion of students at your college (if you are a student) who are wearing backpacks, with 95 percent confidence and an error of 0.04?

What sample size would be needed to estimate the true proportion of American adults who know their cholesterol level, using 95 percent confidence and an error of 0.02?

Individual Assignment Unit: STA101 - Statistics for Business Total Marks: unit. This assignment is worth 40% of the total marks in the Due Date: 13th October 2017 Instructions: 1.Students are...

4: A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a one-hour flight is .02. What is the probability that (a) both...

Dave the jogger runs the same route every day (about 2.2 miles). On 18 consecutive days, he recorded the number of steps using a pedometer. The results were 3,450 3,363 3,228 3,360 3,304 3,407 3,324...

Dave the jogger runs the same route every day (about 2.2 miles). On 18 consecutive days, he recorded the number of steps on his Fitbit. The results were 3,450 3,363 3,228 3,360 3,304 3,407 3,324...

For questions 1 and 2, show all your work in detail by writing the formulas used in each case Hint: For problems similar to problem 1, look at examples 8, 9, and 10 on pages 10 -13 of the notes for...

3. (Excel MM is ajogger who runs the same route every day. On 18 consecutive days, she recorded the number of steps using a pedometer on her cell phone, shown on table below. X = Number of steps per...

If a firm has underapplied overhead at year-end, its actual overhead rate is lower than its pre-determined rate. True or False? Justify your answer.

According to a national representative survey done by Consumer Reports, you should always try to negotiate for a better deal when shopping or paying for services. Tips include researching prices at...

The following investment requires a table factor for a period beyond the teble. Calculate the new table factor and the present valve ( principal ) , Usi Table 1 1 - 2 . Round your few table factor to...

What is a theory and how would you evaluate whether a theory is a good theory or a bad theory? Is there actually such a thing as a good or a bad theory? LO 3.1, 3.3

Scores on the SAT test have a mean of 1518 and a standard deviation of 325. Scores on the ACT test have a mean of 21.1 and a standard deviation of 4.8. Which is relatively better: a score of 1490 on...

Based on Data Set 1 in Appendix B, males have red blood cell counts with a mean of 5.072 and a standard deviation of 0.395, while females have red blood cell counts with a mean of 4.577 and a...

When finding percentiles using Figure 3-5, if the locator L is not a whole number, we round it up to the next larger whole number. An alternative to this procedure is to interpolate. For example,...

1 pts Question 10 Strange Manufacturing Company is considering the purchase of a production facility at a cost of $21 million. The firm expects the project to generate annual cash flows of $7 million...

Using the pure expectations theory, forecast the annual interest rate on six-year Treasuries that are purchased nine years from today. Select the range in which the correct answers falls. (That is,...

I am working on capsim, What did I do wrong, what went well and what could I have done differently? Balance Sheet (in thousands) Income Statement (in thousands) Financial Historical Summaries for...