Lead time for sample of internet orders

Reference no: EM1390352

A large internet retailer is studying the lead time (elapsed time between the time when the order is placed and the time it is filed). The table below gives the lead times (in days) for a random sample of recent orders.

14 19 5 13 20 15 9 16

20 9 2 10 7 12 18 24

1 8 11 5 13 6 2 11

16 20 18 2 4 10 22 17

13 10 21 12 23 18 10 3

1. Display the above data in a group frequency distribution using five (5) classes of equal width.

2. With the aid of an appropriate, graph drawn to scale, determine the mean, the 80% percentile and the mid-50% range.

3. Calculate the standard deviation and hence estimate the CV using the mean obtained in 1.2. Interpret your result.

Reference no: EM1390352

Questions Cloud

What is the probability a subscriber will spend for journal : The average time a subscriber spends reading the Wall Street Journal is 49 minutes. Assume that the standard deviation is 16 minutes and the time are normally distributed .

Explain why glucose : Tracey had been slightly concerned about trace glucose that was found in Max's urine 6-hours after his exercise until she found that he had eaten an entire large pizza an hour before the urinalysis.

Determine lower limit for x bar chart : Bags of tea are sampled to ensure proper weight. The overall average for samples is 8 ounces. Each sample contains 10 bags. The average range is 0.1 ounces.

What was the mean height for both groups : In a sample of 20 men, the mean height was 178 cm. In a sample of 30 women, the mean height was 164 cm. What was the mean height for both groups put together?

Lead time for sample of internet orders : A large internet retailer is studying the lead time (elapsed time between the time when the order is placed and the time it is filed). The table below gives the lead times (in days) for a random sample of recent orders.

Definition of confidence interval : The 95% confidence interval is defined as ____. a) an interval such that we are 95% confident that the population value lies within the interval b) an interval such that the probability is 0.95 that the interval contains the population value

Significance of holy days on chart : Review the Christian year pie chart and write a summary in which you (a) describe the significance of the holy days on the chart.

Estimate the allele frequencies of the alleles : Assume you are studying an enzyme in a large population of a newly discovered diploid plant. You have determined that there are four alleles for this enzyme.

How long do new batteries last on a camping trip : How long do new batteries last on a camping trip? A random sample of n1 = 42 small camp flashlights were installed with brand I batteries and left on until the batteries failed.

User Account

All Pages