Paris arlines wants to estimate the average number of, Ask an Expert

Statistics

Paris Arline's wants to estimate the average number of flights pet year for its crews. A quick pilot study found the mean to be 150 flights, with a standard deviation of 14. If you must estimate the number of flights with an error of 2 flights, how many crews should you sample? Use the 90 percent confidence level.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91013672

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Lets pretend that in a hospital 7 of patients are high-risk

Let's pretend that in a hospital, 7% of patients are "high-risk" while the others are "lower-risk". For patients that are high-risk, 75% will be re-admitted within 30 days. For "lower-risk" patients, the 30day re-admitta ...

Given the following values 20 m 16 07 conduct a

Given the following values: = 20, M = 16, = 0.7, conduct a one-sample z test at a .05 level of significance. What is the decision for a two-tailed test? A) to reject the null hypothesis B) to retain the null hypothesis C ...

Which of the following techniques could we use to evaluate

Which of the following techniques could we use to evaluate the effect of sales at one coffee shop versus sales at another coffee shop, so see if the two shops might be cannibalizing business from one another?

In a certain state pickup trucks account for 21 of the

In a certain? state, pickup trucks account for 21?% of the? state's registered vehicles. If 100 registered vehicles are selected at? random, what is the expected number of pickup? trucks?

6year 8 coupon bond with semi annual payments par value

6 year, 8% coupon bond with semi annual payments, Par Value = $1000. 1) Find out price of the bond if YTM = 10%. 2) What happens to the bond price if YTM decreases 1 basis point? 3) Is the effect of 1 basis point decreas ...

Some statistics students were interested in finding out in

Some Statistics students were interested in finding out in there was a relationship between the number of hours of study for a chapter and the score on that test. On the basis of the number of hours their classmates stud ...

The weight of the eggs produced by a certain breed of hen

The weight of the eggs produced by a certain breed of hen has an unknown distribution with a mean of 65 grams and a standard deviation of 5 grams. If you purchase 144 eggs, what is the approximate probability that the av ...

A researcher records the following body mass index bmi

A researcher records the following body mass index (BMI) scores for a group of participants: 29.1 1.3 (M SD). Participants who score between 26 and 30 on this scale are categorized as overweight. What proportion of parti ...

Table 1 fasting bloodfbs of group afbs of group

Table 1. Fasting Blood FBS of Group A FBS of Group B 95 90 100 100 125 125 175 200 250 550 1. What is the mean fasting blood sugar value for each group? What is the median? Mode? Group A: mean:145, median: 125, mode: n ...

1 define organizational communication2 what interesting

1. Define organizational communication 2. What interesting about the subject of organizational communication

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert