×
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 6.2 - Problem 43
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 6.2 - Problem 43

×

# ?On-Time Flights According to flightstats.com, American Airlines flights from Dallas to Chicago are on time 80% of the time. Suppose 100 flights are ra ISBN: 9780134133539 240

## Solution for problem 43 Chapter 6.2

Statistics: Informed Decisions Using Data | 5th Edition

• Textbook Solutions
• 2901 Step-by-step solutions solved by professors and subject experts
• Get 24/7 help from StudySoup virtual teaching assistants Statistics: Informed Decisions Using Data | 5th Edition

4 5 1 405 Reviews
16
0
Problem 43

On-Time Flights According to flightstats.com, American Airlines flights from Dallas to Chicago are on time 80% of the time. Suppose 100 flights are randomly selected.

(a) Compute the mean and standard deviation of the random variable X, the number of on-time flights in 100 trials of the probability experiment.

(b) Interpret the meaning.

(c) Would it be unusual to observe 75 on-time flights in a random sample of 100 flights from Dallas to Chicago? Why?

Step-by-Step Solution:

Step 1 of 5) On-Time Flights According to flightstats.com, American Airlines flights from Dallas to Chicago are on time 80% of the time. Suppose 100 flights are randomly selected. (a) Compute the mean and standard deviation of the random variable X, the number of on-time flights in 100 trials of the probability experiment. (b) Interpret the meaning. (c) Would it be unusual to observe 75 on-time flights in a random sample of 100 flights from Dallas to Chicago Why We use the notation xa 2 to denote the critical x2 @value for which the area under the chi-square distribution to the right of xa 2 is a. For example, the area under the chi-square distribution to the right of x0.10 2 is 0.10. Test Hypotheses about a Population Standard Deviation.

Step 2 of 5

Step 3 of 5

## Discover and learn what students are asking

Calculus: Early Transcendental Functions : Exponential and Logarithmic Functions
?In Exercises 7-22, solve for $$x$$. $$4^{x}=64$$

Calculus: Early Transcendental Functions : Partial Derivatives
?In Exercises 7 - 38, find both first partial derivatives. $$z=e^{x / y}$$

Statistics: Informed Decisions Using Data : An Overview of Nonparametric Statistics
?Describe the difference between parametric statistical procedures and nonparametric statistical procedures.

Statistics: Informed Decisions Using Data : An Overview of Nonparametric Statistics
?List the advantages of using nonparametric statistical procedures

Statistics: Informed Decisions Using Data : Inference about the Difference between Two Medians: Dependent Samples
?Outpatient Treatment The median length of stay for male substance-abuse outpatient treatment completers is 105 days. The following data represent the

Unlock Textbook Solution