Roberta has collected a set of data and calculated the mean to be 34. the set contains 75 numbers, but roberta gets an email telling her to add the following 5 numbers to her data: {23, 26, 32, 33, 40}

to the nearest tenth, what is the new mean for her data?

a) 27.8

b) 30.8

c) 33.8

d) 36.8

C) New Mean = 33.8

Step-by-step explanation:

Mean of collected set of data = 34

Total number of observations = 75

Mean =

Thus, we can  calculate the sum of observations as : Mean × Total number of observations = 2550

5 new numbers were added to data: 23, 26, 32, 33, 40

New sum of observations = 2550 + 23 + 26 + 32 + 33 + 40 = 2704

New total number of observations = 75 + 5 = 80

New Mean = = = 33.8

Thus, option C) 33.8 is the new mean.

answer: jasmine will bake 4/3 or 1 1/3 cookies in an hour

step-by-step explanation:

if u add 1/3 every 15 minutes after an hour u will have 4/3 or 1 1/3

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.