Reference no: EM131092249
1. Sizes of adult male chinchillas are normally distributed with a mean length of 30.1 centimeters and a standard deviation of 2.75 centimeters. Find and interpret the percentile of a chinchilla which is 27.515 centimeters long.
2. Melville, an adult Ebony chinchilla, is 33.62 centimeters long. What percent of chinchillas have a length greater than Melville's?
3. A local chinchilla breeder enters several of her chinchillas in a national competition each year. Chinchillas which would fall in the smallest 25% of all chinchillas are entered in the "Bantam" category. What must a chinchilla's length be in order for it to be in the smallest 25% of all chinchillas?
4. In 2007, the band Radiohead allowed people to choose how much they wanted to pay to download their album In Rainbows. The distribution of payments was approximately norma with a mean of $8.05 and a standard deviation of $2.60.
5. Draw a normal curve and label the details provided by the 68-95-99.7 Rule for this scenario.
6. What range of prices would be considered "typical" - that is, what range of prices captures 68% of all prices paid to download In Rainbows?
7. What range of prices captures "almost all" (that is, 95% of) prices paid?
8. In 2010, the distribution of total tuition, room, and board costs for American public four-year universities was approximately normal with a mean of $15,040 and a standard deviation of $2100. What range do "almost all" (that is, 95% of) public universities fall in for the amount they charge in tuition, room, and board?
9. In 2010, total tuition, room, and board costs for an in-state student at NAU were approximately $15,502. Find and interpret the percentile of NAU's costs.
|
What were the issues stefaan faced
: If you were Stefaan, how would you synthesize your accomplishments and the path forward in light of your upcoming meeting with Beth?
|
|
Graders the mean score
: For all 12th graders the mean score was 61 with a standard deviation of 12. Who did better relative to what grade they are in? Show all supporting work.
|
|
Problem let the sample space
: For this problem let the sample space be S = {1,2,3,4,5,6,7,8,9} and suppose all the outcomes are equally likely. What is the probability of event E = "an odd number"? (no work is needed)
|
|
Different rates in terms of time
: MUST USE "GOAL SEEK" (in excel) to solve. -If two people work at different rates in terms of time, how do you use GOAL SEEK in excel to answer the question?
|
|
What percent of chinchilla have length greater than melville
: In 2010, the distribution of total tuition, room, and board costs for American public four-year universities was approximately normal with a mean of $15,040 and a standard deviation of $2100. What range do "almost all" (that is, 95% of) public uni..
|
|
Formula should return the value
: If the employee's Job Status field value is equal to FT or an employee's Years Service field value is greater than 20, the formula should return the value 1 (indicating 1 bonus week of vacation). If neither of those conditions are true, the formul..
|
|
Which are used by astronauts to communicate with one another
: Q.1 Can sound travel through- (a) iron (b) water ? Q.2 Can sound travel through vacuum ? Q.3 Name the type of waves which are used by astronauts to communicate with one another on moon (or in outer space).
|
|
What is the expected time that tom works
: Tom and Huck are painting a fence together. Tom and Huck both start paintingat the same time, but lazy Huck stops working after Y hours, where the randomvariable Y is uniform on (0, 1). Diligent Tom then finishes the job at the X, wherethe condit..
|
|
Assumptions of the statistical test
: Discuss the assumptions of the statistical test used in the journal article. If possible, identify information in the article that provides information on how these assumptions were tested.
|