A poll of 100 randomly selected investors showed that investments in a certain company gives on an
average 45% returns per year. Assume from past studies that the standard deviation is 8%. Find 90%
confidence interval for the average percent returns for all of the investors.
43.04 <<46.96
41.08 < x < 48.92
се
42.37 <
< 47.63
43.68 < <46.32

Step-by-step explanation:

EWFEDFERRGRGERER

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: 800

step-by-step explanation: