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 perimeter of the figure shown above. a. 18 yds c. 20 yds b. 10 yds d. 24 yds select the best answer from the choices provided

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?