Question

In: Statistics and Probability

The following data represent the ages of 15 people buying lift tickets at a ski area....

The following data represent the ages of 15 people buying lift tickets at a ski area.

15 25 26 17 38 16 75 41 30 24 28 40 20 35 31

What is the mean of these data, rounded to two decimal places?

What is the median of these data?

What is the range of these data?

What is the variance of these data, rounded to two decimal places?

What is the standard deviation of these data, rounded to two decimal places?

What is the value of the first quartile?

What is the value of the third quartile?

What is the value of the interquartile range?

What is the value of the lower inner fence?

What is the value of the upper inner fence?

Are there any outliers in this data set?

Are there any outliers in this data set? yes or no

Expert Solution

Question is answered below.

orchestra answered 1 year ago

SnowDream operates a rocky Mountain ski resort. The company is planning its lift tickets pricing for...

SnowDream operates a rocky Mountain ski resort. The company is planning its lift tickets pricing for the oming ski season. Investors would like to earn a 16% return on the company $115 million of assets. The company incurs primarily fixed costs to be 35,600,00 for the ski season. The resort serves about 800,000 skiers and snowboarders each season. Variable costs are $8 per guest. The resort had such a favorable reputation among skiers and snowboarders that it had some control...

A ski lift carries a maximum capacity of 100 people/min to a height of 225 feet,...

A ski lift carries a maximum capacity of 100 people/min to a height of 225 feet, calculate the electrical input power required of the motor to meet these conditions if the motor has an efficiency of 85%. Assume the average weight of each person is 160 lb. A.) 50 kW B.) 82 kW C.) 96 kW D.) 110 kW

The following data represent the ages in years of a sample of 25 employees from a...

The following data represent the ages in years of a sample of 25 employees from a government department: 31 43 56 23 49 42 33 61 44 28 48 38 44 35 40 64 52 42 47 39 53 27 36 35 20 Construct a stem and leaf display for the ages. Find the median age. Find the lower quartile of the ages. Find the upper quartile of the ages. Find the 60th percentile...

Random samples of people ages 15−24 and of people ages 25−34 were asked about their preferred...

Random samples of people ages 15−24 and of people ages 25−34 were asked about their preferred method of (remote) communication with friends. The respondents were asked to select one of the methods from the following list: cell phone, instant message, e-mail, other. Preferred Communication Method Age Cell Phone Instant Message Email Other Row Total 15-24 47 45 3 5 100 25-34 43 28 16 13 100 Column Total 90 73 19 18 200 (i) Make a cluster bar graph showing...

The data below represent the ages of drivers and the number of accidents reported for ...

The data below represent the ages of drivers and the number of accidents reported for each age group in Pennsylvania for a selected year. Use an excel spreadsheet to create a scatter plot and calculate the sample correlation coefficient. At the α = 0.10 level, test for a significant correlation between age and number of accidents. Age, x 16 17 18 19 20 21 Number of accidents, y 6605 8932 8506 7349 6458 5974

The CDC estimates that 20% of people in the US between the ages of 15 and...

The CDC estimates that 20% of people in the US between the ages of 15 and 24 have an STI. Suppose we do a test at a local college campus and find that 11 out of 117 people tested have an STI. Is this random variation or does this school have a lower than average level of infection? What test should we perform and why? What is your null and alternative hypothesis? Perform the test. What is the test statistic...

The following data represent the results of an analysis of the proportion of people who use...

The following data represent the results of an analysis of the proportion of people who use Master Card during a typical shopping trip in three different cities. The sample size was 500 in each city: City A: 70% City B: 60% City C: 65% A Chi-Square analysis rejected the hypothesis that the proportions in the populations of each city were the same. The calculated Chi-Square value was 10.73 and the value from the Chi-Square table was 5.991. Is there a...

The data in the table below shows the ages of a group of people in a...

The data in the table below shows the ages of a group of people in a certain community. 47 31 42 33 58 51 25 28 62 29 65 46 51 30 43 72 73 37 29 39 53 61 52 35 a. Construct an ordered stem-and-leaf diagram to represent the above data set. b. Find the mean of the bonuses. c. Find the median of the bonuses. d. Find the mean absolute deviation. e. Find the variance and standard...

1. The data represent the ages of our Presidents at the time they were first inaugurated....

1. The data represent the ages of our Presidents at the time they were first inaugurated. 57 61 57 57 58 57 61 54 68 51 49 64 50 48 65 52 56 46 54 49 51 47 55 55 54 42 51 56 55 51 54 51 60 62 43 55 56 61 52 69 64 46 54 47 70 (a) Were the data obtained from a population or a sample? Explain your answer. (b) What was the age...

The following data set is the ages of 15 random professors. 46 51 60 58 37...

The following data set is the ages of 15 random professors. 46 51 60 58 37 65 43 55 30 68 25 62 56 42 59 a) Find the mean b) Find the mode c) Give the five number summary d) Are they any outliers? If so, what are they?