Statistics Homework Solutions
#5580
Probability
1.) If you buy a box of Wisk, the probability of getting a scoop is 97%. If you buy 9 boxes over the next several months, what is the probability of missing two scoops?
2.) The average length of a cellular phone call in the US is 3.4 minutes. If the standard deviation of those calls is .07 minutes (population standard deviation), what is a 99% confidence interval? We calculated the mean from 86 cellular calls.
3.) A customer service agent gets a call every 6 minutes. What is the probability that the agent will get less than 8 calls during the third hour she works?
What is this?
By OTA - Overall OTA Rating
Parool Agarwal, CA (IP) - 4.9/5
Purchase Cost Now
$2.19 CAD (was ~$7.98)
Included in Download
- Plain text response
- Attached file(s):
- 5580.xls
Why you can trust BrainMass.com
- Your Information is Secure
- Best Online Academic Help Service
- Students find real academic Success
- Probability Distribution - A population is estimated to have a standard deviation of 10. - A population is estimated to have a standard deviation of 10. We want to estimate the population mean within 2, with a 95 percent level of confidence. How large a sample is required?
- Confidence Interval - 49 items are randomly selected from a population of 500 items. The sample mean is 40, and the sample standard deviation 9. Develop a 99 percent confidence interval for the population mean.
- Calculation of Sample Standard Deviation from 95% Confidence Interval - A sample of size n = 14 is selected from a normal population to construct a 95% confidence interval estimate for a population mean. The interval was computed to be (7.82 to 9.64). Determine the sample ...
- Continous probability Distribution - A sample of 81 observations is taken from a normal population. The sample mean is 40, and the sample standard deviation is 5. Determine the 95 percent confidence interval for the population mean.
- A normal population has a mean of 80.0 and a standard deviation of 14.0. - A normal population has a mean of 80.0 and a standard deviation of 14.0. a. Compute the probability of a value between 75.0 and 90.0. b. Compute the probability of a value 75.0 or less. c. Comput ...
