Question

Don will win $2 if he chooses Bag 1, $50 if he chooses Bag 2, and $100 if he chooses Bag 3. What is the expected value of the amount he will win? [S-MD.2]




A. $25.33


B. $30.67


C. $45.33


D. $50.67

Answer 1

let me think hold on

Answer 2

ok :)

Answer 3

what is the[S-MD-2] for???

Answer 4

@bb02

Answer 5

it is a link thing to the meaning of expected value, you dont have to worry about it lol
@andrewhaze

Answer 6

oh ok well umm im guessing B or C not sure

Answer 7

@SolomonZelman could you plz help

Answer 8

do you mind helping me with a coulpe other questions please? @andrewhaze

Answer 9

go ahead put more ill try at least

Answer 10

thank you so much!

Students in two classrooms are taught with two different textbooks. Class A contains 30 students and has a final exam average of 89, with a standard deviation of 2 points. Class B contains 35 students and has a final exam average of 86, with a standard deviation of 3 points. Which of the following statements is correct? [S-IC.5]




A. There is a statistically significant difference between the two classes, as indicated by a p-value greater than 0.05.


B. There is a statistically significant difference between the two classes, as indicated by a p-value less than 0.05.


C. There is not a statistically significant difference between the two classes, as indicated by a p-value greater than 0.05.


D. There is not a statistically significant difference between the classes, as indicated by a p-value less than 0.05.

Answer 11

well im not 100% sure but I think C

Answer 12

thank you :) no worries i trust you @andrewhaze

Answer 13

How many real zeros does y = 3x4 - 2x2 + x - 3 have?

[N-CN.9]




A. 5


B. 4


C. 3


D. 2

Answer 14

when you put x do you mean multiply @bb02

Answer 15

yes @andrewhaze

Answer 16

ok

Answer 17

well again im not sure I got 2 then I got 3 so C or D

Answer 18

thank you so much!!! thats all the ones i had.
@andrewhaze

Answer 19

srry I didn't really help tho

Answer 20

you helped me :) @andrewhaze