Question

A survey of pet owners found that on average, they spend $1,225 annually per pet, with a standard deviation of $275. Between which two amounts would you expect 95% of the survey’s respondents to spend annually per pet if the sample is approximately normal and comes from a normally distributed population?
a.$675 and $1,500
b.$675 and $1,775
c.$950 and $1,500
d.$950 and $1,775

Answer 1

are you afk?

Answer 2

what is ask

Answer 3

Do you know the Empirical Rule?

Answer 4

no

Answer 5

please help me

Answer 6

Have you at least worked with percentiles, percentages, and/or normal distributions?

Answer 7

no

Answer 8

can u please help me

Answer 9

I don't understand any of this

Answer 10

I can, just stick with me. I need to know how much you know, do you know what standard deviation is?

Answer 11

i forgot all of this

Answer 12

What class is this for?

Answer 13

math

Answer 14

I understood that much, I meant what specific class.

Ok, standard deviation is, with the dictionary definition, a quantity calculated to indicate the extent of deviation for a group as a whole. Basically, it shows the percent of how far a number is away from the 0 or the mean.

Answer 15

ok

Answer 16

so how do i solve this

Answer 17

Just give me a sec, the pic is taking a minute.