Aconvenience store manager wants to find out

what type of music customers would like to hear

while they shop. the manager decides to survey

every twentieth person who enters the store in

one day.

is the type of

sampling method used.

a. simple random sampling

b. systematic random sampling c. stratified sampling d. cluster sampling

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

answer: 0.1,0.85

step-by-step explanation: