Score: 0 of 1 pt 7 of 15 (6 complete)
HW Score: 38.33%, 5.75 of 15 pts
3.3.38
Question Help
o
Find the standard deviation, s. of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class
frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0.
[E(•x?)]- [%cf-x))?
SE
n(n-1)
Interval
Frequency
40-49
50-59
60-69
20-29
5
30-39
20
70-79
5
43
16
8
Standard deviation (Round to one decimal place as needed.)

Find the domain of the following expression: 1/(√x)-2

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.