High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. Cockpit noise in a jet aircraft is mostly due to airflow at hundreds of miles per hour. This 3 x 3 contingency table shows 61 observations of data collected by an airline pilot using a handheld sound meter in a certain aircraft cockpit. Noise level is defined as "low" (under 88 decibels), "medium" (88 to 91 decibels), or "high" (92 decibels or more). There are three flight phases (climb, cruise, descent). Noise Level Low (L) Medium (M) High (H) Column Total i P(B) ii P(L) iP(HIC) Cockpit Noise iv P(HID) V P(L and B) vi P(L and C) Flight Phase Climb Cruise (B) (C) 7 17 6 30 6 3 2 11 Click here for the Excel Data File (a) Calculate the following probabilities: (Round your answers to 4 decimal places.) Descent (D) 7 3 10 20 0.4918 Row Total 20 23 18 61

Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT below.   Lengths (mm)      Frequency    80 - 84 1 85 - 89 16 90 - 94 71 95 - 99 108 100 - 104 83 105 - 109 18 110 - 114 3 What is the lower class limit for the fourth class?lower class limit =

Last year, 9 employees of an electronics company retired. Their ages al retirement are given in the frequency lable below. Find the median retirement age. Age f 70 1. 65 3. 60 55 0. 50 2. N= 9 O 62 O 55 O 60 0 5

Please answer all these questions and label, data included: Size($) Rent(sq.feet) 850 1950 1450 2600 1085 2200 1232 2500 718 1950 1485 2700 1136 2650 726 1935 700 1875 956 2150 1100 2400 1285 2650 1985 3300 1369 2800 1175 2400 1225 2450 1245 2100 1259 2700 1150 2200 896 2150 1361 2600 1040 2650 755 2200 1000 1800 1200 2750 A real estate agent wishes to examine the relationship between the selling price of a home (measured in thousands of dollars) and its size (measured in square feet). In particular she wants to assess if the size of the home can accurately predict the house’s selling price. Use the sample data in the RENT spreadsheet to answer the following questions about the relationship. Which characteristic is the dependent variable? Y = Which characteristic is the independent variable? X = Create a scatter plot for the data set. What does this tell you about the relationship between the variables?     4. What are the…

The energy consumption of a group of studio condos is stated below. One set of condos is facing the sun while the other set is not. Determine the interquartile range in each data set and analyze the differences in context. Be sure to show all equations and calculations used. Answer in complete sentences. Facing the sun (kilowatt hours per month): 850, 700, 450, 320, 900, 1500, 456, 742, 753, 854, 1000, 547, 865 Not facing the sun (kilowatt hours per month): 950, 750, 525, 410, 990, 1640, 556, 842, 853, 954, 1150, 647, 965

A bike sharing program recorded meteorological factors as part of efforts to understand factors related to bike usage on Sundays. The bike usage and the average temperature (Temp below, in degrees Celsius) on 12 consecutive Sundays is provided below. Usage Temp 2586 6.2 2886 5.3 3850 10.3 7.2 9.8 9.3 17.6 14.7 15.4 3352 3842 3665 4592 4409 4562 <

The cholesterol levels (in milligrams per deciliter) of 30 adults are listed below. Find the interquartile range for the cholesterol level of the 30 adults. 172 180 184 185 154 156 165 165 170 171 189 189 190 192 195 198 198 200 200 200 205 205 211 215 220 220 225 238 255 265 OA. 180 B. 30 O O O C. 31 O D. 211

Data was collected for a sample of organic snacks. The amount of sugar (in mg) in each snack is summarized in the histogram below. Which statement best describes the meaning of one of the bars in the histogram? Frequency 14 12 10 8 140 150 160 170 180 190 200 210 amount of sugar (mg) The largest number of snacks have 14 mg of sugar 3 snacks have about 145 mg of sugar. 145 snacks have between 140 and 150 mg of sugar. O 145 snacks have 3 mg of sugar.

A professor records the following final grades in one course. Construct a frequency table for the gradies. B B BBB Ce с с с с CDD D D F Complete the tabla. (Type an integer or decimal rounded to the nearest tonth as nooded.) Grade Frequency Rointive frequenoy Cumulative frequency CC TF B B с с % 1=10%

The accompanying histogram is for pulse rates for 125 people. Convert the vertical axis to relative frequency and shows the values that would replace each of the values on the vertical axis.