econsta3

19.09.2019 • 

Mathematics

Researchers measured the data speeds for a particular smartphone carrier at 50 airports. the highest speed measured was 77.577.5 mbps. the complete list of 50 data speeds has a mean of x overbarxequals=17.1517.15 mbps and a standard deviation of sequals=35.8835.88 mbps.
a. what is the difference between carrier's highest data speed and the mean of all 50 data speeds?
b. how many standard deviations is that [the difference found in part (a)]?
c. convert the carrier's highest data speed to a z score.
d. if we consider data speeds that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant?

Ответ:

icario1224

28.01.2023

Mathematics

---

we are given a relation

R={(-2,6), (1,8) , (3,4), (-3,8) , (c,d)}

We know that any relation is a function when it does not have same input value for two different output values

we will verify each options

option-A:

(-3,5)

We have (-3,8)

which means have same input (-3) but different output(5 and 8)

so, this is FALSE

option-B:

(-2,8)

We have (-2,6)

which means have same input (-2) but different output(6 and 8)

so, this is FALSE

option-C:

(1,-8)

We have (1,8)

which means have same input (1) but different output(- and 8)

so, this is FALSE

option-D:

(3,4)

We have (3,4)

which means have same input (3) and also has same output (4)

so, this is TRUE

---

0,0(0 оценок)